./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_0f275133-9008-4876-bfcf-8361357ae83f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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_0f275133-9008-4876-bfcf-8361357ae83f/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:01,766 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:32:01,767 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:32:01,773 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:32:01,773 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:32:01,774 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:32:01,774 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:32:01,775 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:32:01,776 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:32:01,776 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:32:01,777 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:32:01,777 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:32:01,777 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:32:01,778 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:32:01,778 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:32:01,778 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:32:01,779 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:32:01,780 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:32:01,780 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:32:01,781 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:32:01,782 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:32:01,782 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:32:01,783 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:32:01,783 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:32:01,783 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:32:01,784 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:32:01,784 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:32:01,785 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:32:01,785 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:32:01,786 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:32:01,786 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:32:01,786 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:32:01,786 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:32:01,786 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:32:01,787 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:32:01,787 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:32:01,787 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-12-09 01:32:01,794 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:32:01,794 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:32:01,794 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 01:32:01,794 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 01:32:01,795 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 01:32:01,795 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 01:32:01,795 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 01:32:01,795 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:32:01,795 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 01:32:01,795 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 01:32:01,795 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:32:01,795 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 01:32:01,795 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 01:32:01,796 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 01:32:01,796 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-09 01:32:01,796 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 01:32:01,796 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 01:32:01,796 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 01:32:01,796 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:32:01,796 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 01:32:01,796 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 01:32:01,796 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 01:32:01,796 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:32:01,797 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:32:01,797 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 01:32:01,797 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 01:32:01,797 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 01:32:01,797 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 01:32:01,797 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 01:32:01,797 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_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:01,813 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:32:01,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:32:01,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:32:01,822 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:32:01,823 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:32:01,823 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-12-09 01:32:01,855 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/bin-2019/uautomizer/data/c8cbe34c1/37bc05e679e142e2b25957d3167c96c0/FLAGce9abb5a7 [2018-12-09 01:32:02,220 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:32:02,220 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-12-09 01:32:02,224 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/bin-2019/uautomizer/data/c8cbe34c1/37bc05e679e142e2b25957d3167c96c0/FLAGce9abb5a7 [2018-12-09 01:32:02,232 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/bin-2019/uautomizer/data/c8cbe34c1/37bc05e679e142e2b25957d3167c96c0 [2018-12-09 01:32:02,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:32:02,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:32:02,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:32:02,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:32:02,237 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:32:02,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:32:02" (1/1) ... [2018-12-09 01:32:02,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@672351b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:32:02, skipping insertion in model container [2018-12-09 01:32:02,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:32:02" (1/1) ... [2018-12-09 01:32:02,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:32:02,251 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:32:02,330 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:32:02,333 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:32:02,341 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:32:02,349 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:32:02,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:32:02 WrapperNode [2018-12-09 01:32:02,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:32:02,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:32:02,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:32:02,349 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:32:02,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:32:02" (1/1) ... [2018-12-09 01:32:02,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:32:02" (1/1) ... [2018-12-09 01:32:02,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:32:02,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:32:02,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:32:02,361 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:32:02,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:32:02" (1/1) ... [2018-12-09 01:32:02,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:32:02" (1/1) ... [2018-12-09 01:32:02,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:32:02" (1/1) ... [2018-12-09 01:32:02,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:32:02" (1/1) ... [2018-12-09 01:32:02,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:32:02" (1/1) ... [2018-12-09 01:32:02,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:32:02" (1/1) ... [2018-12-09 01:32:02,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:32:02" (1/1) ... [2018-12-09 01:32:02,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:32:02,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:32:02,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:32:02,372 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:32:02,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:32:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 01:32:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 01:32:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:32:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:32:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 01:32:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 01:32:02,521 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:32:02,521 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 01:32:02,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:32:02 BoogieIcfgContainer [2018-12-09 01:32:02,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:32:02,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 01:32:02,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 01:32:02,524 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 01:32:02,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:32:02" (1/3) ... [2018-12-09 01:32:02,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec4b939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:32:02, skipping insertion in model container [2018-12-09 01:32:02,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:32:02" (2/3) ... [2018-12-09 01:32:02,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec4b939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:32:02, skipping insertion in model container [2018-12-09 01:32:02,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:32:02" (3/3) ... [2018-12-09 01:32:02,526 INFO L112 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-12-09 01:32:02,532 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 01:32:02,536 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-09 01:32:02,545 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-09 01:32:02,563 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 01:32:02,564 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 01:32:02,564 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 01:32:02,564 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 01:32:02,564 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 01:32:02,564 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 01:32:02,564 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 01:32:02,564 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 01:32:02,564 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 01:32:02,575 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-12-09 01:32:02,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-09 01:32:02,578 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:02,578 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:02,580 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:02,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:02,583 INFO L82 PathProgramCache]: Analyzing trace with hash -623924281, now seen corresponding path program 1 times [2018-12-09 01:32:02,584 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:02,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:02,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:02,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:02,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:02,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:02,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:32:02,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:32:02,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 01:32:02,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:32:02,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:32:02,673 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-12-09 01:32:02,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:02,712 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2018-12-09 01:32:02,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:32:02,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-12-09 01:32:02,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:02,718 INFO L225 Difference]: With dead ends: 41 [2018-12-09 01:32:02,719 INFO L226 Difference]: Without dead ends: 29 [2018-12-09 01:32:02,720 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 [2018-12-09 01:32:02,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-09 01:32:02,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2018-12-09 01:32:02,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-09 01:32:02,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2018-12-09 01:32:02,741 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 8 [2018-12-09 01:32:02,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:02,741 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2018-12-09 01:32:02,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 01:32:02,741 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2018-12-09 01:32:02,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 01:32:02,742 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:02,742 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:02,742 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:02,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:02,742 INFO L82 PathProgramCache]: Analyzing trace with hash 2133183819, now seen corresponding path program 1 times [2018-12-09 01:32:02,742 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:02,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:02,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:02,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:02,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:02,756 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:32:02,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:32:02,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 01:32:02,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:32:02,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:32:02,758 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 3 states. [2018-12-09 01:32:02,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:02,775 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2018-12-09 01:32:02,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:32:02,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-09 01:32:02,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:02,776 INFO L225 Difference]: With dead ends: 32 [2018-12-09 01:32:02,776 INFO L226 Difference]: Without dead ends: 30 [2018-12-09 01:32:02,776 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 [2018-12-09 01:32:02,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-09 01:32:02,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2018-12-09 01:32:02,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-09 01:32:02,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-12-09 01:32:02,779 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 9 [2018-12-09 01:32:02,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:02,779 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-12-09 01:32:02,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 01:32:02,779 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-12-09 01:32:02,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 01:32:02,780 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:02,780 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:02,780 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:02,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:02,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1704189008, now seen corresponding path program 1 times [2018-12-09 01:32:02,780 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:02,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:02,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:02,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:02,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:02,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:32:02,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:32:02,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 01:32:02,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:32:02,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:32:02,794 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 3 states. [2018-12-09 01:32:02,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:02,810 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-12-09 01:32:02,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:32:02,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-09 01:32:02,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:02,810 INFO L225 Difference]: With dead ends: 42 [2018-12-09 01:32:02,811 INFO L226 Difference]: Without dead ends: 23 [2018-12-09 01:32:02,811 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 [2018-12-09 01:32:02,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-09 01:32:02,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-12-09 01:32:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-09 01:32:02,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-12-09 01:32:02,813 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2018-12-09 01:32:02,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:02,814 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-12-09 01:32:02,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 01:32:02,814 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-12-09 01:32:02,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 01:32:02,814 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:02,814 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:02,814 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:02,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:02,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1290251757, now seen corresponding path program 1 times [2018-12-09 01:32:02,815 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:02,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:02,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:02,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:02,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:02,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:32:02,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:32:02,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 01:32:02,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:32:02,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:32:02,827 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 3 states. [2018-12-09 01:32:02,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:02,841 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-12-09 01:32:02,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:32:02,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-12-09 01:32:02,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:02,842 INFO L225 Difference]: With dead ends: 22 [2018-12-09 01:32:02,842 INFO L226 Difference]: Without dead ends: 21 [2018-12-09 01:32:02,842 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 [2018-12-09 01:32:02,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-12-09 01:32:02,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-12-09 01:32:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-09 01:32:02,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-12-09 01:32:02,845 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2018-12-09 01:32:02,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:02,845 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-12-09 01:32:02,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 01:32:02,845 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-12-09 01:32:02,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 01:32:02,845 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:02,845 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:02,845 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:02,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:02,846 INFO L82 PathProgramCache]: Analyzing trace with hash -2067163616, now seen corresponding path program 1 times [2018-12-09 01:32:02,846 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:02,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:02,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:02,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:02,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:02,863 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:02,864 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:02,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:02,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:02,908 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:02,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-12-09 01:32:02,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 01:32:02,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 01:32:02,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:32:02,909 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 4 states. [2018-12-09 01:32:02,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:02,939 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2018-12-09 01:32:02,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 01:32:02,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-12-09 01:32:02,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:02,940 INFO L225 Difference]: With dead ends: 41 [2018-12-09 01:32:02,940 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 01:32:02,940 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 [2018-12-09 01:32:02,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 01:32:02,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-12-09 01:32:02,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-09 01:32:02,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-12-09 01:32:02,943 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 14 [2018-12-09 01:32:02,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:02,944 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-12-09 01:32:02,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 01:32:02,944 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-12-09 01:32:02,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 01:32:02,944 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:02,944 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:02,944 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:02,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:02,945 INFO L82 PathProgramCache]: Analyzing trace with hash 2025624681, now seen corresponding path program 1 times [2018-12-09 01:32:02,945 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:02,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:02,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:02,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:02,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-09 01:32:02,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:32:02,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:32:02,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 01:32:02,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:32:02,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:32:02,957 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 3 states. [2018-12-09 01:32:02,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:02,965 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2018-12-09 01:32:02,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:32:02,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-12-09 01:32:02,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:02,965 INFO L225 Difference]: With dead ends: 37 [2018-12-09 01:32:02,965 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 01:32:02,966 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 [2018-12-09 01:32:02,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 01:32:02,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2018-12-09 01:32:02,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-09 01:32:02,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-12-09 01:32:02,969 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 16 [2018-12-09 01:32:02,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:02,969 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-12-09 01:32:02,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 01:32:02,969 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2018-12-09 01:32:02,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 01:32:02,969 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:02,969 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:02,970 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:02,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:02,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2025809379, now seen corresponding path program 1 times [2018-12-09 01:32:02,970 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:02,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:02,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:02,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:02,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:02,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:02,985 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:02,985 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:02,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:02,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:03,032 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:03,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-12-09 01:32:03,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 01:32:03,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 01:32:03,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 01:32:03,033 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 6 states. [2018-12-09 01:32:03,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:03,054 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2018-12-09 01:32:03,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 01:32:03,054 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-12-09 01:32:03,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:03,055 INFO L225 Difference]: With dead ends: 64 [2018-12-09 01:32:03,055 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 01:32:03,055 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 [2018-12-09 01:32:03,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 01:32:03,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2018-12-09 01:32:03,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-09 01:32:03,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-12-09 01:32:03,058 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 16 [2018-12-09 01:32:03,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:03,058 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-12-09 01:32:03,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 01:32:03,058 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-12-09 01:32:03,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 01:32:03,058 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:03,058 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:03,059 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:03,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:03,059 INFO L82 PathProgramCache]: Analyzing trace with hash -432629319, now seen corresponding path program 2 times [2018-12-09 01:32:03,059 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:03,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:03,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:03,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:03,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:03,088 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:03,088 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:03,097 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:32:03,103 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:32:03,103 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:03,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:03,107 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:03,121 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:03,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-12-09 01:32:03,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 01:32:03,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 01:32:03,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:32:03,122 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2018-12-09 01:32:03,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:03,137 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-12-09 01:32:03,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 01:32:03,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-09 01:32:03,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:03,138 INFO L225 Difference]: With dead ends: 40 [2018-12-09 01:32:03,138 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 01:32:03,138 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 [2018-12-09 01:32:03,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 01:32:03,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2018-12-09 01:32:03,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-09 01:32:03,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-12-09 01:32:03,141 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 20 [2018-12-09 01:32:03,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:03,141 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-12-09 01:32:03,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 01:32:03,141 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-12-09 01:32:03,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 01:32:03,141 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:03,142 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:03,142 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:03,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:03,142 INFO L82 PathProgramCache]: Analyzing trace with hash 305055378, now seen corresponding path program 3 times [2018-12-09 01:32:03,142 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:03,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:03,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:03,143 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:03,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:03,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:03,167 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:03,178 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:32:03,184 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-09 01:32:03,184 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:03,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:03,203 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:03,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-12-09 01:32:03,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 01:32:03,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 01:32:03,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 01:32:03,204 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 6 states. [2018-12-09 01:32:03,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:03,232 INFO L93 Difference]: Finished difference Result 88 states and 105 transitions. [2018-12-09 01:32:03,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 01:32:03,233 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-12-09 01:32:03,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:03,233 INFO L225 Difference]: With dead ends: 88 [2018-12-09 01:32:03,233 INFO L226 Difference]: Without dead ends: 86 [2018-12-09 01:32:03,234 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 [2018-12-09 01:32:03,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-12-09 01:32:03,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2018-12-09 01:32:03,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-12-09 01:32:03,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2018-12-09 01:32:03,238 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 26 [2018-12-09 01:32:03,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:03,238 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2018-12-09 01:32:03,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 01:32:03,238 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2018-12-09 01:32:03,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 01:32:03,238 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:03,239 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:03,239 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:03,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:03,239 INFO L82 PathProgramCache]: Analyzing trace with hash -847369045, now seen corresponding path program 4 times [2018-12-09 01:32:03,239 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:03,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:03,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:03,240 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:03,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:03,282 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:03,282 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:03,290 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:32:03,298 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:32:03,298 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:03,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:03,327 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:03,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-12-09 01:32:03,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 01:32:03,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 01:32:03,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-09 01:32:03,328 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand 7 states. [2018-12-09 01:32:03,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:03,371 INFO L93 Difference]: Finished difference Result 148 states and 178 transitions. [2018-12-09 01:32:03,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 01:32:03,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2018-12-09 01:32:03,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:03,372 INFO L225 Difference]: With dead ends: 148 [2018-12-09 01:32:03,372 INFO L226 Difference]: Without dead ends: 146 [2018-12-09 01:32:03,373 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 [2018-12-09 01:32:03,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-12-09 01:32:03,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 95. [2018-12-09 01:32:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-12-09 01:32:03,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2018-12-09 01:32:03,381 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 32 [2018-12-09 01:32:03,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:03,382 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2018-12-09 01:32:03,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 01:32:03,382 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2018-12-09 01:32:03,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-09 01:32:03,383 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:03,383 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:03,383 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:03,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:03,384 INFO L82 PathProgramCache]: Analyzing trace with hash 155374504, now seen corresponding path program 2 times [2018-12-09 01:32:03,384 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:03,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:03,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:03,385 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:03,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:03,429 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-09 01:32:03,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:03,429 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:03,437 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:32:03,444 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:32:03,444 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:03,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-09 01:32:03,472 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:03,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-12-09 01:32:03,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 01:32:03,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 01:32:03,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 01:32:03,473 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 6 states. [2018-12-09 01:32:03,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:03,491 INFO L93 Difference]: Finished difference Result 181 states and 210 transitions. [2018-12-09 01:32:03,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 01:32:03,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2018-12-09 01:32:03,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:03,493 INFO L225 Difference]: With dead ends: 181 [2018-12-09 01:32:03,493 INFO L226 Difference]: Without dead ends: 105 [2018-12-09 01:32:03,494 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 [2018-12-09 01:32:03,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-12-09 01:32:03,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2018-12-09 01:32:03,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-12-09 01:32:03,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2018-12-09 01:32:03,499 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 34 [2018-12-09 01:32:03,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:03,499 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2018-12-09 01:32:03,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 01:32:03,499 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2018-12-09 01:32:03,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 01:32:03,499 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:03,500 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:03,500 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:03,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:03,500 INFO L82 PathProgramCache]: Analyzing trace with hash 2007292932, now seen corresponding path program 5 times [2018-12-09 01:32:03,500 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:03,500 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:03,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:03,501 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:03,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:03,542 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:03,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:03,543 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:03,548 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 01:32:03,557 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-12-09 01:32:03,557 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:03,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:03,577 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:03,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-12-09 01:32:03,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 01:32:03,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 01:32:03,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-09 01:32:03,578 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand 8 states. [2018-12-09 01:32:03,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:03,615 INFO L93 Difference]: Finished difference Result 185 states and 223 transitions. [2018-12-09 01:32:03,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 01:32:03,615 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2018-12-09 01:32:03,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:03,616 INFO L225 Difference]: With dead ends: 185 [2018-12-09 01:32:03,616 INFO L226 Difference]: Without dead ends: 183 [2018-12-09 01:32:03,617 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 [2018-12-09 01:32:03,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-12-09 01:32:03,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 116. [2018-12-09 01:32:03,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-12-09 01:32:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions. [2018-12-09 01:32:03,624 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 38 [2018-12-09 01:32:03,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:03,625 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions. [2018-12-09 01:32:03,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 01:32:03,625 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions. [2018-12-09 01:32:03,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-09 01:32:03,626 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:03,626 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:03,626 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:03,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:03,627 INFO L82 PathProgramCache]: Analyzing trace with hash -998567743, now seen corresponding path program 3 times [2018-12-09 01:32:03,627 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:03,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:03,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:03,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:03,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 22 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-09 01:32:03,661 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:03,661 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:03,667 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:32:03,673 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-09 01:32:03,673 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:03,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:03,709 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 37 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-12-09 01:32:03,724 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:03,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 10 [2018-12-09 01:32:03,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 01:32:03,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 01:32:03,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-09 01:32:03,724 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand 10 states. [2018-12-09 01:32:03,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:03,753 INFO L93 Difference]: Finished difference Result 156 states and 179 transitions. [2018-12-09 01:32:03,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 01:32:03,754 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2018-12-09 01:32:03,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:03,754 INFO L225 Difference]: With dead ends: 156 [2018-12-09 01:32:03,754 INFO L226 Difference]: Without dead ends: 65 [2018-12-09 01:32:03,755 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 [2018-12-09 01:32:03,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-12-09 01:32:03,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2018-12-09 01:32:03,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-12-09 01:32:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2018-12-09 01:32:03,758 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 40 [2018-12-09 01:32:03,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:03,759 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2018-12-09 01:32:03,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 01:32:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2018-12-09 01:32:03,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-12-09 01:32:03,759 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:03,760 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:03,760 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:03,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:03,760 INFO L82 PathProgramCache]: Analyzing trace with hash 869721245, now seen corresponding path program 6 times [2018-12-09 01:32:03,760 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:03,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:03,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:03,761 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:03,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:03,804 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:03,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:03,804 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:03,817 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 01:32:03,826 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-12-09 01:32:03,826 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:03,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:03,832 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:03,847 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:03,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-12-09 01:32:03,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 01:32:03,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 01:32:03,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-12-09 01:32:03,847 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand 9 states. [2018-12-09 01:32:03,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:03,890 INFO L93 Difference]: Finished difference Result 188 states and 232 transitions. [2018-12-09 01:32:03,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 01:32:03,890 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2018-12-09 01:32:03,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:03,891 INFO L225 Difference]: With dead ends: 188 [2018-12-09 01:32:03,891 INFO L226 Difference]: Without dead ends: 186 [2018-12-09 01:32:03,891 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 [2018-12-09 01:32:03,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-12-09 01:32:03,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 176. [2018-12-09 01:32:03,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-12-09 01:32:03,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 202 transitions. [2018-12-09 01:32:03,895 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 202 transitions. Word has length 44 [2018-12-09 01:32:03,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:03,895 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 202 transitions. [2018-12-09 01:32:03,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 01:32:03,895 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 202 transitions. [2018-12-09 01:32:03,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-09 01:32:03,896 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:03,896 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:03,896 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:03,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:03,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1375491702, now seen corresponding path program 7 times [2018-12-09 01:32:03,896 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:03,896 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:03,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:03,897 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:03,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:03,941 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:03,941 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:03,941 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:03,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:03,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:03,976 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:03,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-12-09 01:32:03,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 01:32:03,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 01:32:03,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-09 01:32:03,977 INFO L87 Difference]: Start difference. First operand 176 states and 202 transitions. Second operand 10 states. [2018-12-09 01:32:04,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:04,031 INFO L93 Difference]: Finished difference Result 328 states and 400 transitions. [2018-12-09 01:32:04,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 01:32:04,031 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2018-12-09 01:32:04,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:04,032 INFO L225 Difference]: With dead ends: 328 [2018-12-09 01:32:04,032 INFO L226 Difference]: Without dead ends: 326 [2018-12-09 01:32:04,032 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 [2018-12-09 01:32:04,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-12-09 01:32:04,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 197. [2018-12-09 01:32:04,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-12-09 01:32:04,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 227 transitions. [2018-12-09 01:32:04,037 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 227 transitions. Word has length 50 [2018-12-09 01:32:04,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:04,037 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 227 transitions. [2018-12-09 01:32:04,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 01:32:04,037 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 227 transitions. [2018-12-09 01:32:04,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-12-09 01:32:04,037 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:04,038 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:04,038 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:04,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:04,038 INFO L82 PathProgramCache]: Analyzing trace with hash -139378289, now seen corresponding path program 8 times [2018-12-09 01:32:04,038 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:04,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:04,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:04,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:04,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:04,090 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:04,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:04,090 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:04,096 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:32:04,102 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:32:04,103 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:04,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:04,109 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:04,126 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:04,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-12-09 01:32:04,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 01:32:04,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 01:32:04,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-12-09 01:32:04,127 INFO L87 Difference]: Start difference. First operand 197 states and 227 transitions. Second operand 11 states. [2018-12-09 01:32:04,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:04,180 INFO L93 Difference]: Finished difference Result 371 states and 454 transitions. [2018-12-09 01:32:04,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 01:32:04,180 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2018-12-09 01:32:04,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:04,181 INFO L225 Difference]: With dead ends: 371 [2018-12-09 01:32:04,181 INFO L226 Difference]: Without dead ends: 369 [2018-12-09 01:32:04,181 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 [2018-12-09 01:32:04,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-12-09 01:32:04,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 218. [2018-12-09 01:32:04,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-12-09 01:32:04,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 252 transitions. [2018-12-09 01:32:04,186 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 252 transitions. Word has length 56 [2018-12-09 01:32:04,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:04,186 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 252 transitions. [2018-12-09 01:32:04,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 01:32:04,186 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 252 transitions. [2018-12-09 01:32:04,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-12-09 01:32:04,187 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:04,187 INFO L402 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:04,187 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:04,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:04,187 INFO L82 PathProgramCache]: Analyzing trace with hash 583444998, now seen corresponding path program 4 times [2018-12-09 01:32:04,187 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:04,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:04,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:04,188 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:04,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:04,218 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 91 proven. 57 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-12-09 01:32:04,218 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:04,218 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:04,226 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:32:04,235 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:32:04,235 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:04,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:04,273 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 58 proven. 102 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-12-09 01:32:04,287 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:04,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2018-12-09 01:32:04,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-09 01:32:04,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-09 01:32:04,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-12-09 01:32:04,288 INFO L87 Difference]: Start difference. First operand 218 states and 252 transitions. Second operand 15 states. [2018-12-09 01:32:04,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:04,346 INFO L93 Difference]: Finished difference Result 519 states and 620 transitions. [2018-12-09 01:32:04,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-09 01:32:04,346 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2018-12-09 01:32:04,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:04,347 INFO L225 Difference]: With dead ends: 519 [2018-12-09 01:32:04,347 INFO L226 Difference]: Without dead ends: 338 [2018-12-09 01:32:04,348 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 [2018-12-09 01:32:04,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-12-09 01:32:04,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 329. [2018-12-09 01:32:04,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-12-09 01:32:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 381 transitions. [2018-12-09 01:32:04,355 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 381 transitions. Word has length 58 [2018-12-09 01:32:04,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:04,356 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 381 transitions. [2018-12-09 01:32:04,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-09 01:32:04,356 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 381 transitions. [2018-12-09 01:32:04,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-12-09 01:32:04,356 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:04,356 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:04,357 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:04,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:04,357 INFO L82 PathProgramCache]: Analyzing trace with hash 155563496, now seen corresponding path program 9 times [2018-12-09 01:32:04,357 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:04,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:04,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:04,358 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:04,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:04,426 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:04,426 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:04,426 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:04,432 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:32:04,443 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-12-09 01:32:04,443 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:04,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:04,455 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:04,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:04,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-12-09 01:32:04,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-09 01:32:04,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-09 01:32:04,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-09 01:32:04,470 INFO L87 Difference]: Start difference. First operand 329 states and 381 transitions. Second operand 12 states. [2018-12-09 01:32:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:04,554 INFO L93 Difference]: Finished difference Result 633 states and 781 transitions. [2018-12-09 01:32:04,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 01:32:04,554 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2018-12-09 01:32:04,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:04,555 INFO L225 Difference]: With dead ends: 633 [2018-12-09 01:32:04,555 INFO L226 Difference]: Without dead ends: 631 [2018-12-09 01:32:04,556 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 [2018-12-09 01:32:04,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2018-12-09 01:32:04,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 368. [2018-12-09 01:32:04,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-12-09 01:32:04,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 427 transitions. [2018-12-09 01:32:04,564 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 427 transitions. Word has length 62 [2018-12-09 01:32:04,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:04,564 INFO L480 AbstractCegarLoop]: Abstraction has 368 states and 427 transitions. [2018-12-09 01:32:04,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-09 01:32:04,564 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 427 transitions. [2018-12-09 01:32:04,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-12-09 01:32:04,565 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:04,565 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:04,565 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:04,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:04,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1388168065, now seen corresponding path program 10 times [2018-12-09 01:32:04,565 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:04,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:04,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:04,566 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:04,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:04,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:04,651 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:04,657 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:32:04,665 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:32:04,665 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:04,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:04,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:04,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-12-09 01:32:04,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 01:32:04,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 01:32:04,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-12-09 01:32:04,692 INFO L87 Difference]: Start difference. First operand 368 states and 427 transitions. Second operand 13 states. [2018-12-09 01:32:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:04,769 INFO L93 Difference]: Finished difference Result 712 states and 880 transitions. [2018-12-09 01:32:04,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 01:32:04,770 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2018-12-09 01:32:04,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:04,772 INFO L225 Difference]: With dead ends: 712 [2018-12-09 01:32:04,772 INFO L226 Difference]: Without dead ends: 710 [2018-12-09 01:32:04,773 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 [2018-12-09 01:32:04,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2018-12-09 01:32:04,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 407. [2018-12-09 01:32:04,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-12-09 01:32:04,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 473 transitions. [2018-12-09 01:32:04,787 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 473 transitions. Word has length 68 [2018-12-09 01:32:04,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:04,787 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 473 transitions. [2018-12-09 01:32:04,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 01:32:04,787 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 473 transitions. [2018-12-09 01:32:04,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-12-09 01:32:04,788 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:04,788 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:04,788 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:04,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:04,789 INFO L82 PathProgramCache]: Analyzing trace with hash -254707110, now seen corresponding path program 11 times [2018-12-09 01:32:04,789 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:04,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:04,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:04,790 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:04,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:04,874 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:04,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:04,874 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:04,880 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 01:32:04,895 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-12-09 01:32:04,896 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:04,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:04,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:04,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-12-09 01:32:04,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 01:32:04,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 01:32:04,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-09 01:32:04,927 INFO L87 Difference]: Start difference. First operand 407 states and 473 transitions. Second operand 14 states. [2018-12-09 01:32:05,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:05,016 INFO L93 Difference]: Finished difference Result 791 states and 979 transitions. [2018-12-09 01:32:05,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-09 01:32:05,016 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 74 [2018-12-09 01:32:05,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:05,018 INFO L225 Difference]: With dead ends: 791 [2018-12-09 01:32:05,018 INFO L226 Difference]: Without dead ends: 789 [2018-12-09 01:32:05,019 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 [2018-12-09 01:32:05,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2018-12-09 01:32:05,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 446. [2018-12-09 01:32:05,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2018-12-09 01:32:05,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 519 transitions. [2018-12-09 01:32:05,034 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 519 transitions. Word has length 74 [2018-12-09 01:32:05,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:05,034 INFO L480 AbstractCegarLoop]: Abstraction has 446 states and 519 transitions. [2018-12-09 01:32:05,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 01:32:05,034 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 519 transitions. [2018-12-09 01:32:05,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-12-09 01:32:05,035 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:05,035 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:05,035 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:05,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:05,035 INFO L82 PathProgramCache]: Analyzing trace with hash -101913997, now seen corresponding path program 12 times [2018-12-09 01:32:05,035 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:05,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:05,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:05,036 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:05,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:05,121 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:05,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:05,121 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:05,129 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 01:32:05,145 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-12-09 01:32:05,145 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:05,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:05,173 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:05,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-12-09 01:32:05,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-09 01:32:05,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-09 01:32:05,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-12-09 01:32:05,174 INFO L87 Difference]: Start difference. First operand 446 states and 519 transitions. Second operand 15 states. [2018-12-09 01:32:05,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:05,242 INFO L93 Difference]: Finished difference Result 870 states and 1078 transitions. [2018-12-09 01:32:05,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-09 01:32:05,242 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 80 [2018-12-09 01:32:05,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:05,244 INFO L225 Difference]: With dead ends: 870 [2018-12-09 01:32:05,244 INFO L226 Difference]: Without dead ends: 868 [2018-12-09 01:32:05,245 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 [2018-12-09 01:32:05,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2018-12-09 01:32:05,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 485. [2018-12-09 01:32:05,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2018-12-09 01:32:05,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 565 transitions. [2018-12-09 01:32:05,260 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 565 transitions. Word has length 80 [2018-12-09 01:32:05,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:05,260 INFO L480 AbstractCegarLoop]: Abstraction has 485 states and 565 transitions. [2018-12-09 01:32:05,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-09 01:32:05,261 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 565 transitions. [2018-12-09 01:32:05,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-12-09 01:32:05,261 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:05,261 INFO L402 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:05,261 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:05,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:05,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1731208140, now seen corresponding path program 13 times [2018-12-09 01:32:05,262 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:05,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:05,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:05,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:05,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:05,342 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:05,342 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:05,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:05,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:05,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:05,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-12-09 01:32:05,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-09 01:32:05,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-09 01:32:05,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-12-09 01:32:05,381 INFO L87 Difference]: Start difference. First operand 485 states and 565 transitions. Second operand 16 states. [2018-12-09 01:32:05,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:05,467 INFO L93 Difference]: Finished difference Result 949 states and 1177 transitions. [2018-12-09 01:32:05,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-09 01:32:05,468 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 86 [2018-12-09 01:32:05,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:05,469 INFO L225 Difference]: With dead ends: 949 [2018-12-09 01:32:05,469 INFO L226 Difference]: Without dead ends: 947 [2018-12-09 01:32:05,470 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 [2018-12-09 01:32:05,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2018-12-09 01:32:05,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 524. [2018-12-09 01:32:05,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-12-09 01:32:05,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 611 transitions. [2018-12-09 01:32:05,482 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 611 transitions. Word has length 86 [2018-12-09 01:32:05,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:05,482 INFO L480 AbstractCegarLoop]: Abstraction has 524 states and 611 transitions. [2018-12-09 01:32:05,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-09 01:32:05,482 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 611 transitions. [2018-12-09 01:32:05,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-12-09 01:32:05,483 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:05,483 INFO L402 BasicCegarLoop]: trace histogram [14, 13, 13, 8, 8, 8, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:05,483 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:05,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:05,483 INFO L82 PathProgramCache]: Analyzing trace with hash 694950769, now seen corresponding path program 5 times [2018-12-09 01:32:05,483 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:05,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:05,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:05,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:05,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:05,539 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 178 proven. 184 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-12-09 01:32:05,539 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:05,539 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:05,553 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 01:32:05,570 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-12-09 01:32:05,570 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:05,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 178 proven. 184 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-12-09 01:32:05,596 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:05,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-12-09 01:32:05,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 01:32:05,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 01:32:05,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-12-09 01:32:05,597 INFO L87 Difference]: Start difference. First operand 524 states and 611 transitions. Second operand 11 states. [2018-12-09 01:32:05,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:05,627 INFO L93 Difference]: Finished difference Result 1009 states and 1184 transitions. [2018-12-09 01:32:05,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 01:32:05,628 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2018-12-09 01:32:05,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:05,629 INFO L225 Difference]: With dead ends: 1009 [2018-12-09 01:32:05,629 INFO L226 Difference]: Without dead ends: 534 [2018-12-09 01:32:05,630 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 [2018-12-09 01:32:05,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-12-09 01:32:05,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 530. [2018-12-09 01:32:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-12-09 01:32:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 617 transitions. [2018-12-09 01:32:05,641 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 617 transitions. Word has length 88 [2018-12-09 01:32:05,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:05,642 INFO L480 AbstractCegarLoop]: Abstraction has 530 states and 617 transitions. [2018-12-09 01:32:05,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 01:32:05,642 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 617 transitions. [2018-12-09 01:32:05,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-12-09 01:32:05,643 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:05,643 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:05,643 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:05,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:05,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1030698597, now seen corresponding path program 14 times [2018-12-09 01:32:05,643 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:05,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:05,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:05,644 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:05,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:05,757 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:05,757 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:05,766 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:32:05,777 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:32:05,777 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:05,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:05,791 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:05,806 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:05,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-12-09 01:32:05,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-09 01:32:05,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-09 01:32:05,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-12-09 01:32:05,807 INFO L87 Difference]: Start difference. First operand 530 states and 617 transitions. Second operand 17 states. [2018-12-09 01:32:05,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:05,908 INFO L93 Difference]: Finished difference Result 1034 states and 1282 transitions. [2018-12-09 01:32:05,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-12-09 01:32:05,908 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 92 [2018-12-09 01:32:05,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:05,910 INFO L225 Difference]: With dead ends: 1034 [2018-12-09 01:32:05,910 INFO L226 Difference]: Without dead ends: 1032 [2018-12-09 01:32:05,910 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-12-09 01:32:05,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2018-12-09 01:32:05,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 569. [2018-12-09 01:32:05,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2018-12-09 01:32:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 663 transitions. [2018-12-09 01:32:05,921 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 663 transitions. Word has length 92 [2018-12-09 01:32:05,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:05,921 INFO L480 AbstractCegarLoop]: Abstraction has 569 states and 663 transitions. [2018-12-09 01:32:05,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-09 01:32:05,921 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 663 transitions. [2018-12-09 01:32:05,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-12-09 01:32:05,921 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:05,921 INFO L402 BasicCegarLoop]: trace histogram [15, 14, 14, 9, 9, 9, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:05,922 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:05,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:05,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1815145418, now seen corresponding path program 6 times [2018-12-09 01:32:05,922 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:05,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:05,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:05,922 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:05,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 199 proven. 234 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-12-09 01:32:05,979 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:05,979 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:05,987 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 01:32:06,003 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2018-12-09 01:32:06,003 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:06,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 245 proven. 123 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-12-09 01:32:06,109 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:06,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2018-12-09 01:32:06,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-09 01:32:06,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-09 01:32:06,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-12-09 01:32:06,110 INFO L87 Difference]: Start difference. First operand 569 states and 663 transitions. Second operand 20 states. [2018-12-09 01:32:06,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:06,187 INFO L93 Difference]: Finished difference Result 1218 states and 1439 transitions. [2018-12-09 01:32:06,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-09 01:32:06,187 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 94 [2018-12-09 01:32:06,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:06,188 INFO L225 Difference]: With dead ends: 1218 [2018-12-09 01:32:06,188 INFO L226 Difference]: Without dead ends: 704 [2018-12-09 01:32:06,189 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 [2018-12-09 01:32:06,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2018-12-09 01:32:06,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 689. [2018-12-09 01:32:06,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2018-12-09 01:32:06,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 802 transitions. [2018-12-09 01:32:06,200 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 802 transitions. Word has length 94 [2018-12-09 01:32:06,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:06,201 INFO L480 AbstractCegarLoop]: Abstraction has 689 states and 802 transitions. [2018-12-09 01:32:06,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-09 01:32:06,201 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 802 transitions. [2018-12-09 01:32:06,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-12-09 01:32:06,201 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:06,201 INFO L402 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:06,201 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:06,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:06,201 INFO L82 PathProgramCache]: Analyzing trace with hash -164482498, now seen corresponding path program 15 times [2018-12-09 01:32:06,202 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:06,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:06,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:06,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:06,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:06,304 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:06,304 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:06,310 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:32:06,329 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-12-09 01:32:06,329 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:06,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:06,360 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:06,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-12-09 01:32:06,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-09 01:32:06,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-09 01:32:06,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-12-09 01:32:06,360 INFO L87 Difference]: Start difference. First operand 689 states and 802 transitions. Second operand 18 states. [2018-12-09 01:32:06,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:06,468 INFO L93 Difference]: Finished difference Result 1347 states and 1672 transitions. [2018-12-09 01:32:06,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-09 01:32:06,468 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 98 [2018-12-09 01:32:06,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:06,470 INFO L225 Difference]: With dead ends: 1347 [2018-12-09 01:32:06,470 INFO L226 Difference]: Without dead ends: 1345 [2018-12-09 01:32:06,471 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 [2018-12-09 01:32:06,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2018-12-09 01:32:06,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 740. [2018-12-09 01:32:06,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2018-12-09 01:32:06,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 862 transitions. [2018-12-09 01:32:06,483 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 862 transitions. Word has length 98 [2018-12-09 01:32:06,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:06,483 INFO L480 AbstractCegarLoop]: Abstraction has 740 states and 862 transitions. [2018-12-09 01:32:06,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-09 01:32:06,483 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 862 transitions. [2018-12-09 01:32:06,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-12-09 01:32:06,484 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:06,484 INFO L402 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:06,484 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:06,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:06,484 INFO L82 PathProgramCache]: Analyzing trace with hash 682960727, now seen corresponding path program 16 times [2018-12-09 01:32:06,484 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:06,484 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:06,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:06,485 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:06,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:06,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:06,597 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:06,603 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:32:06,614 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:32:06,614 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:06,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:06,639 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:06,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-12-09 01:32:06,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-12-09 01:32:06,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-12-09 01:32:06,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-12-09 01:32:06,640 INFO L87 Difference]: Start difference. First operand 740 states and 862 transitions. Second operand 19 states. [2018-12-09 01:32:06,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:06,757 INFO L93 Difference]: Finished difference Result 1450 states and 1801 transitions. [2018-12-09 01:32:06,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-12-09 01:32:06,758 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 104 [2018-12-09 01:32:06,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:06,761 INFO L225 Difference]: With dead ends: 1450 [2018-12-09 01:32:06,761 INFO L226 Difference]: Without dead ends: 1448 [2018-12-09 01:32:06,762 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-12-09 01:32:06,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2018-12-09 01:32:06,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 791. [2018-12-09 01:32:06,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2018-12-09 01:32:06,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 922 transitions. [2018-12-09 01:32:06,783 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 922 transitions. Word has length 104 [2018-12-09 01:32:06,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:06,784 INFO L480 AbstractCegarLoop]: Abstraction has 791 states and 922 transitions. [2018-12-09 01:32:06,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-12-09 01:32:06,784 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 922 transitions. [2018-12-09 01:32:06,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-12-09 01:32:06,785 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:06,785 INFO L402 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:06,785 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:06,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:06,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1927816624, now seen corresponding path program 17 times [2018-12-09 01:32:06,785 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:06,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:06,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:06,786 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:06,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:06,931 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:06,931 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:06,931 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:06,940 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 01:32:06,959 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-12-09 01:32:06,959 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:06,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:06,992 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:06,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-12-09 01:32:06,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-09 01:32:06,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-09 01:32:06,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-12-09 01:32:06,993 INFO L87 Difference]: Start difference. First operand 791 states and 922 transitions. Second operand 20 states. [2018-12-09 01:32:07,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:07,114 INFO L93 Difference]: Finished difference Result 1553 states and 1930 transitions. [2018-12-09 01:32:07,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-09 01:32:07,115 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 110 [2018-12-09 01:32:07,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:07,118 INFO L225 Difference]: With dead ends: 1553 [2018-12-09 01:32:07,118 INFO L226 Difference]: Without dead ends: 1551 [2018-12-09 01:32:07,119 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 [2018-12-09 01:32:07,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2018-12-09 01:32:07,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 842. [2018-12-09 01:32:07,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2018-12-09 01:32:07,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 982 transitions. [2018-12-09 01:32:07,141 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 982 transitions. Word has length 110 [2018-12-09 01:32:07,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:07,141 INFO L480 AbstractCegarLoop]: Abstraction has 842 states and 982 transitions. [2018-12-09 01:32:07,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-09 01:32:07,141 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 982 transitions. [2018-12-09 01:32:07,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-12-09 01:32:07,142 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:07,142 INFO L402 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:07,142 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:07,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:07,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1569768119, now seen corresponding path program 18 times [2018-12-09 01:32:07,143 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:07,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:07,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:07,144 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:07,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:07,330 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:07,330 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:07,336 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 01:32:07,357 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-12-09 01:32:07,357 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:07,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:07,382 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:07,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-12-09 01:32:07,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-12-09 01:32:07,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-12-09 01:32:07,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-12-09 01:32:07,383 INFO L87 Difference]: Start difference. First operand 842 states and 982 transitions. Second operand 21 states. [2018-12-09 01:32:07,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:07,513 INFO L93 Difference]: Finished difference Result 1656 states and 2059 transitions. [2018-12-09 01:32:07,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-12-09 01:32:07,513 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 116 [2018-12-09 01:32:07,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:07,515 INFO L225 Difference]: With dead ends: 1656 [2018-12-09 01:32:07,515 INFO L226 Difference]: Without dead ends: 1654 [2018-12-09 01:32:07,516 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 [2018-12-09 01:32:07,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2018-12-09 01:32:07,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 893. [2018-12-09 01:32:07,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2018-12-09 01:32:07,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1042 transitions. [2018-12-09 01:32:07,529 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1042 transitions. Word has length 116 [2018-12-09 01:32:07,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:07,529 INFO L480 AbstractCegarLoop]: Abstraction has 893 states and 1042 transitions. [2018-12-09 01:32:07,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-12-09 01:32:07,530 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1042 transitions. [2018-12-09 01:32:07,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-12-09 01:32:07,530 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:07,530 INFO L402 BasicCegarLoop]: trace histogram [19, 18, 18, 11, 11, 11, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:07,530 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:07,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:07,531 INFO L82 PathProgramCache]: Analyzing trace with hash 605044514, now seen corresponding path program 7 times [2018-12-09 01:32:07,531 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:07,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:07,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:07,531 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:07,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 333 proven. 352 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-12-09 01:32:07,603 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:07,603 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:07,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:07,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:07,634 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 333 proven. 352 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-12-09 01:32:07,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:07,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-12-09 01:32:07,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 01:32:07,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 01:32:07,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-09 01:32:07,654 INFO L87 Difference]: Start difference. First operand 893 states and 1042 transitions. Second operand 14 states. [2018-12-09 01:32:07,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:07,691 INFO L93 Difference]: Finished difference Result 1729 states and 2028 transitions. [2018-12-09 01:32:07,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-09 01:32:07,691 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 118 [2018-12-09 01:32:07,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:07,693 INFO L225 Difference]: With dead ends: 1729 [2018-12-09 01:32:07,693 INFO L226 Difference]: Without dead ends: 903 [2018-12-09 01:32:07,694 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 [2018-12-09 01:32:07,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2018-12-09 01:32:07,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 899. [2018-12-09 01:32:07,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2018-12-09 01:32:07,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1048 transitions. [2018-12-09 01:32:07,703 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1048 transitions. Word has length 118 [2018-12-09 01:32:07,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:07,703 INFO L480 AbstractCegarLoop]: Abstraction has 899 states and 1048 transitions. [2018-12-09 01:32:07,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 01:32:07,704 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1048 transitions. [2018-12-09 01:32:07,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-12-09 01:32:07,704 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:07,704 INFO L402 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:07,704 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:07,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:07,705 INFO L82 PathProgramCache]: Analyzing trace with hash 497188386, now seen corresponding path program 19 times [2018-12-09 01:32:07,705 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:07,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:07,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:07,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:07,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:07,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:07,847 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:07,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:07,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:07,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:07,890 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:07,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-12-09 01:32:07,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-09 01:32:07,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-09 01:32:07,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-12-09 01:32:07,891 INFO L87 Difference]: Start difference. First operand 899 states and 1048 transitions. Second operand 22 states. [2018-12-09 01:32:07,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:07,989 INFO L93 Difference]: Finished difference Result 1765 states and 2194 transitions. [2018-12-09 01:32:07,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-12-09 01:32:07,989 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 122 [2018-12-09 01:32:07,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:07,992 INFO L225 Difference]: With dead ends: 1765 [2018-12-09 01:32:07,992 INFO L226 Difference]: Without dead ends: 1763 [2018-12-09 01:32:07,993 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 [2018-12-09 01:32:07,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2018-12-09 01:32:08,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 950. [2018-12-09 01:32:08,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2018-12-09 01:32:08,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1108 transitions. [2018-12-09 01:32:08,007 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1108 transitions. Word has length 122 [2018-12-09 01:32:08,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:08,007 INFO L480 AbstractCegarLoop]: Abstraction has 950 states and 1108 transitions. [2018-12-09 01:32:08,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-09 01:32:08,007 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1108 transitions. [2018-12-09 01:32:08,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-12-09 01:32:08,008 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:08,008 INFO L402 BasicCegarLoop]: trace histogram [20, 19, 19, 12, 12, 12, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:08,009 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:08,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:08,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1619612229, now seen corresponding path program 8 times [2018-12-09 01:32:08,009 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:08,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:08,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:08,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:08,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:08,114 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 362 proven. 420 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-12-09 01:32:08,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:08,114 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:08,121 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:32:08,135 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:32:08,135 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:08,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 362 proven. 420 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-12-09 01:32:08,159 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:08,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-12-09 01:32:08,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-09 01:32:08,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-09 01:32:08,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-12-09 01:32:08,160 INFO L87 Difference]: Start difference. First operand 950 states and 1108 transitions. Second operand 15 states. [2018-12-09 01:32:08,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:08,204 INFO L93 Difference]: Finished difference Result 1837 states and 2154 transitions. [2018-12-09 01:32:08,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-09 01:32:08,205 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 124 [2018-12-09 01:32:08,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:08,207 INFO L225 Difference]: With dead ends: 1837 [2018-12-09 01:32:08,207 INFO L226 Difference]: Without dead ends: 960 [2018-12-09 01:32:08,209 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 [2018-12-09 01:32:08,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2018-12-09 01:32:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 956. [2018-12-09 01:32:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2018-12-09 01:32:08,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1114 transitions. [2018-12-09 01:32:08,224 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1114 transitions. Word has length 124 [2018-12-09 01:32:08,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:08,225 INFO L480 AbstractCegarLoop]: Abstraction has 956 states and 1114 transitions. [2018-12-09 01:32:08,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-09 01:32:08,225 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1114 transitions. [2018-12-09 01:32:08,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-12-09 01:32:08,226 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:08,226 INFO L402 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:08,226 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:08,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:08,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1936852933, now seen corresponding path program 20 times [2018-12-09 01:32:08,226 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:08,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:08,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:08,227 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:08,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:08,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:08,392 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:08,392 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:08,399 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:32:08,411 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:32:08,412 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:08,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:08,438 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:08,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-12-09 01:32:08,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-12-09 01:32:08,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-12-09 01:32:08,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-12-09 01:32:08,439 INFO L87 Difference]: Start difference. First operand 956 states and 1114 transitions. Second operand 23 states. [2018-12-09 01:32:08,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:08,555 INFO L93 Difference]: Finished difference Result 1874 states and 2329 transitions. [2018-12-09 01:32:08,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-12-09 01:32:08,555 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 128 [2018-12-09 01:32:08,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:08,559 INFO L225 Difference]: With dead ends: 1874 [2018-12-09 01:32:08,559 INFO L226 Difference]: Without dead ends: 1872 [2018-12-09 01:32:08,560 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 [2018-12-09 01:32:08,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2018-12-09 01:32:08,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1007. [2018-12-09 01:32:08,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1007 states. [2018-12-09 01:32:08,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1174 transitions. [2018-12-09 01:32:08,582 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1174 transitions. Word has length 128 [2018-12-09 01:32:08,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:08,583 INFO L480 AbstractCegarLoop]: Abstraction has 1007 states and 1174 transitions. [2018-12-09 01:32:08,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-12-09 01:32:08,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1174 transitions. [2018-12-09 01:32:08,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-12-09 01:32:08,584 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:08,584 INFO L402 BasicCegarLoop]: trace histogram [21, 20, 20, 13, 13, 13, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:08,584 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:08,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:08,585 INFO L82 PathProgramCache]: Analyzing trace with hash 23856532, now seen corresponding path program 9 times [2018-12-09 01:32:08,585 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:08,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:08,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:08,586 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:08,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:08,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 391 proven. 494 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-12-09 01:32:08,680 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:08,681 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:08,687 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:32:08,699 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-12-09 01:32:08,699 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:08,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:08,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 436 proven. 176 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-12-09 01:32:08,821 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:08,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 25 [2018-12-09 01:32:08,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-12-09 01:32:08,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-12-09 01:32:08,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-12-09 01:32:08,822 INFO L87 Difference]: Start difference. First operand 1007 states and 1174 transitions. Second operand 25 states. [2018-12-09 01:32:08,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:08,894 INFO L93 Difference]: Finished difference Result 2049 states and 2405 transitions. [2018-12-09 01:32:08,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-12-09 01:32:08,895 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 130 [2018-12-09 01:32:08,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:08,897 INFO L225 Difference]: With dead ends: 2049 [2018-12-09 01:32:08,897 INFO L226 Difference]: Without dead ends: 1121 [2018-12-09 01:32:08,898 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 [2018-12-09 01:32:08,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2018-12-09 01:32:08,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1100. [2018-12-09 01:32:08,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1100 states. [2018-12-09 01:32:08,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1281 transitions. [2018-12-09 01:32:08,913 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1281 transitions. Word has length 130 [2018-12-09 01:32:08,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:08,914 INFO L480 AbstractCegarLoop]: Abstraction has 1100 states and 1281 transitions. [2018-12-09 01:32:08,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-12-09 01:32:08,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1281 transitions. [2018-12-09 01:32:08,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-12-09 01:32:08,915 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:08,915 INFO L402 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:08,915 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:08,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:08,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1041122412, now seen corresponding path program 21 times [2018-12-09 01:32:08,916 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:08,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:08,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:08,917 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:08,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:09,073 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:09,073 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:09,079 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:32:09,099 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-12-09 01:32:09,099 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:09,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:09,127 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:09,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-12-09 01:32:09,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-12-09 01:32:09,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-12-09 01:32:09,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-12-09 01:32:09,128 INFO L87 Difference]: Start difference. First operand 1100 states and 1281 transitions. Second operand 24 states. [2018-12-09 01:32:09,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:09,248 INFO L93 Difference]: Finished difference Result 2154 states and 2677 transitions. [2018-12-09 01:32:09,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-12-09 01:32:09,249 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 134 [2018-12-09 01:32:09,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:09,251 INFO L225 Difference]: With dead ends: 2154 [2018-12-09 01:32:09,251 INFO L226 Difference]: Without dead ends: 2152 [2018-12-09 01:32:09,252 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 [2018-12-09 01:32:09,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2018-12-09 01:32:09,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1157. [2018-12-09 01:32:09,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-12-09 01:32:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1348 transitions. [2018-12-09 01:32:09,266 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1348 transitions. Word has length 134 [2018-12-09 01:32:09,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:09,266 INFO L480 AbstractCegarLoop]: Abstraction has 1157 states and 1348 transitions. [2018-12-09 01:32:09,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-12-09 01:32:09,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1348 transitions. [2018-12-09 01:32:09,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-12-09 01:32:09,267 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:09,267 INFO L402 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:09,268 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:09,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:09,268 INFO L82 PathProgramCache]: Analyzing trace with hash -465446867, now seen corresponding path program 22 times [2018-12-09 01:32:09,268 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:09,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:09,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:09,268 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:09,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:09,445 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:09,445 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:09,452 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:32:09,466 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:32:09,466 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:09,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:09,494 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:09,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-12-09 01:32:09,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-12-09 01:32:09,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-12-09 01:32:09,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-12-09 01:32:09,494 INFO L87 Difference]: Start difference. First operand 1157 states and 1348 transitions. Second operand 25 states. [2018-12-09 01:32:09,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:09,640 INFO L93 Difference]: Finished difference Result 2269 states and 2821 transitions. [2018-12-09 01:32:09,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-12-09 01:32:09,640 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 140 [2018-12-09 01:32:09,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:09,643 INFO L225 Difference]: With dead ends: 2269 [2018-12-09 01:32:09,643 INFO L226 Difference]: Without dead ends: 2267 [2018-12-09 01:32:09,643 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 [2018-12-09 01:32:09,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2018-12-09 01:32:09,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1214. [2018-12-09 01:32:09,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1214 states. [2018-12-09 01:32:09,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1415 transitions. [2018-12-09 01:32:09,660 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1415 transitions. Word has length 140 [2018-12-09 01:32:09,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:09,660 INFO L480 AbstractCegarLoop]: Abstraction has 1214 states and 1415 transitions. [2018-12-09 01:32:09,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-12-09 01:32:09,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1415 transitions. [2018-12-09 01:32:09,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-12-09 01:32:09,661 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:09,661 INFO L402 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:09,661 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:09,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:09,661 INFO L82 PathProgramCache]: Analyzing trace with hash -693740026, now seen corresponding path program 23 times [2018-12-09 01:32:09,661 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:09,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:09,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:09,662 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:09,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:09,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:09,854 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:09,860 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 01:32:09,884 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-12-09 01:32:09,884 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:09,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:09,922 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:09,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-12-09 01:32:09,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-12-09 01:32:09,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-12-09 01:32:09,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-12-09 01:32:09,923 INFO L87 Difference]: Start difference. First operand 1214 states and 1415 transitions. Second operand 26 states. [2018-12-09 01:32:10,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:10,072 INFO L93 Difference]: Finished difference Result 2384 states and 2965 transitions. [2018-12-09 01:32:10,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-12-09 01:32:10,073 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 146 [2018-12-09 01:32:10,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:10,076 INFO L225 Difference]: With dead ends: 2384 [2018-12-09 01:32:10,076 INFO L226 Difference]: Without dead ends: 2382 [2018-12-09 01:32:10,077 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 [2018-12-09 01:32:10,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2018-12-09 01:32:10,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 1271. [2018-12-09 01:32:10,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2018-12-09 01:32:10,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1482 transitions. [2018-12-09 01:32:10,095 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1482 transitions. Word has length 146 [2018-12-09 01:32:10,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:10,095 INFO L480 AbstractCegarLoop]: Abstraction has 1271 states and 1482 transitions. [2018-12-09 01:32:10,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-12-09 01:32:10,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1482 transitions. [2018-12-09 01:32:10,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-12-09 01:32:10,096 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:10,096 INFO L402 BasicCegarLoop]: trace histogram [24, 23, 23, 15, 15, 15, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:10,096 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:10,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:10,096 INFO L82 PathProgramCache]: Analyzing trace with hash 2035440153, now seen corresponding path program 10 times [2018-12-09 01:32:10,096 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:10,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:10,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:10,097 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:10,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1363 backedges. 511 proven. 660 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-12-09 01:32:10,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:10,193 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:10,201 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:32:10,218 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:32:10,218 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:10,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1363 backedges. 511 proven. 660 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-12-09 01:32:10,253 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:10,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-12-09 01:32:10,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-09 01:32:10,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-09 01:32:10,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-12-09 01:32:10,254 INFO L87 Difference]: Start difference. First operand 1271 states and 1482 transitions. Second operand 18 states. [2018-12-09 01:32:10,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:10,292 INFO L93 Difference]: Finished difference Result 2461 states and 2884 transitions. [2018-12-09 01:32:10,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-09 01:32:10,292 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 148 [2018-12-09 01:32:10,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:10,294 INFO L225 Difference]: With dead ends: 2461 [2018-12-09 01:32:10,294 INFO L226 Difference]: Without dead ends: 1281 [2018-12-09 01:32:10,295 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 [2018-12-09 01:32:10,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2018-12-09 01:32:10,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1277. [2018-12-09 01:32:10,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1277 states. [2018-12-09 01:32:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1488 transitions. [2018-12-09 01:32:10,307 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1488 transitions. Word has length 148 [2018-12-09 01:32:10,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:10,307 INFO L480 AbstractCegarLoop]: Abstraction has 1277 states and 1488 transitions. [2018-12-09 01:32:10,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-09 01:32:10,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1488 transitions. [2018-12-09 01:32:10,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-12-09 01:32:10,308 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:10,308 INFO L402 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:10,308 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:10,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:10,308 INFO L82 PathProgramCache]: Analyzing trace with hash -503620321, now seen corresponding path program 24 times [2018-12-09 01:32:10,308 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:10,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:10,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:10,309 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:10,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:10,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:10,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:10,498 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:10,503 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 01:32:10,527 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-12-09 01:32:10,527 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:10,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:10,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:10,569 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:10,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-12-09 01:32:10,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-12-09 01:32:10,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-12-09 01:32:10,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-12-09 01:32:10,570 INFO L87 Difference]: Start difference. First operand 1277 states and 1488 transitions. Second operand 27 states. [2018-12-09 01:32:10,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:10,693 INFO L93 Difference]: Finished difference Result 2505 states and 3115 transitions. [2018-12-09 01:32:10,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-12-09 01:32:10,693 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 152 [2018-12-09 01:32:10,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:10,697 INFO L225 Difference]: With dead ends: 2505 [2018-12-09 01:32:10,697 INFO L226 Difference]: Without dead ends: 2503 [2018-12-09 01:32:10,698 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 [2018-12-09 01:32:10,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2018-12-09 01:32:10,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 1334. [2018-12-09 01:32:10,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1334 states. [2018-12-09 01:32:10,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1555 transitions. [2018-12-09 01:32:10,721 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1555 transitions. Word has length 152 [2018-12-09 01:32:10,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:10,722 INFO L480 AbstractCegarLoop]: Abstraction has 1334 states and 1555 transitions. [2018-12-09 01:32:10,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-12-09 01:32:10,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1555 transitions. [2018-12-09 01:32:10,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-12-09 01:32:10,722 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:10,723 INFO L402 BasicCegarLoop]: trace histogram [25, 24, 24, 16, 16, 16, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:10,723 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:10,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:10,723 INFO L82 PathProgramCache]: Analyzing trace with hash 56882930, now seen corresponding path program 11 times [2018-12-09 01:32:10,723 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:10,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:10,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:10,724 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:10,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:10,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 544 proven. 752 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-12-09 01:32:10,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:10,845 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:10,851 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 01:32:10,875 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-12-09 01:32:10,875 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:10,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 544 proven. 752 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-12-09 01:32:10,912 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:10,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-12-09 01:32:10,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-12-09 01:32:10,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-12-09 01:32:10,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-12-09 01:32:10,913 INFO L87 Difference]: Start difference. First operand 1334 states and 1555 transitions. Second operand 19 states. [2018-12-09 01:32:10,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:10,961 INFO L93 Difference]: Finished difference Result 2581 states and 3024 transitions. [2018-12-09 01:32:10,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-12-09 01:32:10,961 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2018-12-09 01:32:10,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:10,963 INFO L225 Difference]: With dead ends: 2581 [2018-12-09 01:32:10,963 INFO L226 Difference]: Without dead ends: 1344 [2018-12-09 01:32:10,964 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 [2018-12-09 01:32:10,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2018-12-09 01:32:10,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1340. [2018-12-09 01:32:10,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2018-12-09 01:32:10,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1561 transitions. [2018-12-09 01:32:10,977 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1561 transitions. Word has length 154 [2018-12-09 01:32:10,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:10,977 INFO L480 AbstractCegarLoop]: Abstraction has 1340 states and 1561 transitions. [2018-12-09 01:32:10,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-12-09 01:32:10,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1561 transitions. [2018-12-09 01:32:10,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-12-09 01:32:10,978 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:10,978 INFO L402 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:10,978 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:10,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:10,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1647254152, now seen corresponding path program 25 times [2018-12-09 01:32:10,979 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:10,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:10,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:10,979 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:10,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:11,197 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:11,197 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:11,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:11,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:11,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:11,269 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:11,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-12-09 01:32:11,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-12-09 01:32:11,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-12-09 01:32:11,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-12-09 01:32:11,270 INFO L87 Difference]: Start difference. First operand 1340 states and 1561 transitions. Second operand 28 states. [2018-12-09 01:32:11,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:11,437 INFO L93 Difference]: Finished difference Result 2626 states and 3265 transitions. [2018-12-09 01:32:11,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-12-09 01:32:11,437 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 158 [2018-12-09 01:32:11,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:11,440 INFO L225 Difference]: With dead ends: 2626 [2018-12-09 01:32:11,440 INFO L226 Difference]: Without dead ends: 2624 [2018-12-09 01:32:11,440 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 [2018-12-09 01:32:11,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2018-12-09 01:32:11,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 1397. [2018-12-09 01:32:11,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1397 states. [2018-12-09 01:32:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1628 transitions. [2018-12-09 01:32:11,466 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1628 transitions. Word has length 158 [2018-12-09 01:32:11,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:11,467 INFO L480 AbstractCegarLoop]: Abstraction has 1397 states and 1628 transitions. [2018-12-09 01:32:11,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-12-09 01:32:11,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1628 transitions. [2018-12-09 01:32:11,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-12-09 01:32:11,467 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:11,467 INFO L402 BasicCegarLoop]: trace histogram [26, 25, 25, 17, 17, 17, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:11,467 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:11,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:11,468 INFO L82 PathProgramCache]: Analyzing trace with hash 536399115, now seen corresponding path program 12 times [2018-12-09 01:32:11,468 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:11,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:11,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:11,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:11,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1619 backedges. 577 proven. 850 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-12-09 01:32:11,604 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:11,605 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:11,610 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 01:32:11,635 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-12-09 01:32:11,635 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:11,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1619 backedges. 695 proven. 264 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-12-09 01:32:11,800 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:11,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12] total 31 [2018-12-09 01:32:11,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-12-09 01:32:11,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-12-09 01:32:11,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-12-09 01:32:11,801 INFO L87 Difference]: Start difference. First operand 1397 states and 1628 transitions. Second operand 31 states. [2018-12-09 01:32:11,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:11,894 INFO L93 Difference]: Finished difference Result 2933 states and 3457 transitions. [2018-12-09 01:32:11,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-12-09 01:32:11,895 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 160 [2018-12-09 01:32:11,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:11,897 INFO L225 Difference]: With dead ends: 2933 [2018-12-09 01:32:11,897 INFO L226 Difference]: Without dead ends: 1639 [2018-12-09 01:32:11,899 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 [2018-12-09 01:32:11,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2018-12-09 01:32:11,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1613. [2018-12-09 01:32:11,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1613 states. [2018-12-09 01:32:11,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 1879 transitions. [2018-12-09 01:32:11,923 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 1879 transitions. Word has length 160 [2018-12-09 01:32:11,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:11,923 INFO L480 AbstractCegarLoop]: Abstraction has 1613 states and 1879 transitions. [2018-12-09 01:32:11,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-12-09 01:32:11,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 1879 transitions. [2018-12-09 01:32:11,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-12-09 01:32:11,924 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:11,924 INFO L402 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:11,925 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:11,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:11,925 INFO L82 PathProgramCache]: Analyzing trace with hash 426444561, now seen corresponding path program 26 times [2018-12-09 01:32:11,925 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:11,925 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:11,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:11,926 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:11,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:12,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:12,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:12,156 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:12,163 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:32:12,179 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:32:12,179 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:12,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:12,223 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:12,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-12-09 01:32:12,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-12-09 01:32:12,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-12-09 01:32:12,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-12-09 01:32:12,224 INFO L87 Difference]: Start difference. First operand 1613 states and 1879 transitions. Second operand 29 states. [2018-12-09 01:32:12,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:12,391 INFO L93 Difference]: Finished difference Result 3167 states and 3940 transitions. [2018-12-09 01:32:12,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-12-09 01:32:12,391 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 164 [2018-12-09 01:32:12,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:12,395 INFO L225 Difference]: With dead ends: 3167 [2018-12-09 01:32:12,395 INFO L226 Difference]: Without dead ends: 3165 [2018-12-09 01:32:12,396 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 [2018-12-09 01:32:12,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3165 states. [2018-12-09 01:32:12,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3165 to 1682. [2018-12-09 01:32:12,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2018-12-09 01:32:12,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 1960 transitions. [2018-12-09 01:32:12,440 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 1960 transitions. Word has length 164 [2018-12-09 01:32:12,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:12,440 INFO L480 AbstractCegarLoop]: Abstraction has 1682 states and 1960 transitions. [2018-12-09 01:32:12,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-12-09 01:32:12,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 1960 transitions. [2018-12-09 01:32:12,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-12-09 01:32:12,442 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:12,442 INFO L402 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:12,442 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:12,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:12,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1153552874, now seen corresponding path program 27 times [2018-12-09 01:32:12,442 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:12,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:12,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:12,443 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:12,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:12,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:12,689 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:12,695 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:32:12,720 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-12-09 01:32:12,720 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:12,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:12,752 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:12,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-12-09 01:32:12,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-12-09 01:32:12,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-12-09 01:32:12,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-12-09 01:32:12,753 INFO L87 Difference]: Start difference. First operand 1682 states and 1960 transitions. Second operand 30 states. [2018-12-09 01:32:12,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:12,922 INFO L93 Difference]: Finished difference Result 3306 states and 4114 transitions. [2018-12-09 01:32:12,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-12-09 01:32:12,922 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 170 [2018-12-09 01:32:12,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:12,924 INFO L225 Difference]: With dead ends: 3306 [2018-12-09 01:32:12,924 INFO L226 Difference]: Without dead ends: 3304 [2018-12-09 01:32:12,925 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-12-09 01:32:12,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3304 states. [2018-12-09 01:32:12,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3304 to 1751. [2018-12-09 01:32:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1751 states. [2018-12-09 01:32:12,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2041 transitions. [2018-12-09 01:32:12,949 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2041 transitions. Word has length 170 [2018-12-09 01:32:12,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:12,949 INFO L480 AbstractCegarLoop]: Abstraction has 1751 states and 2041 transitions. [2018-12-09 01:32:12,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-12-09 01:32:12,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2041 transitions. [2018-12-09 01:32:12,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-12-09 01:32:12,950 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:12,950 INFO L402 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:12,950 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:12,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:12,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1719577085, now seen corresponding path program 28 times [2018-12-09 01:32:12,950 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:12,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:12,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:12,951 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:12,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:13,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:13,188 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:13,188 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:13,194 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:32:13,209 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:32:13,209 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:13,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:13,242 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:13,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-12-09 01:32:13,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-12-09 01:32:13,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-12-09 01:32:13,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-12-09 01:32:13,243 INFO L87 Difference]: Start difference. First operand 1751 states and 2041 transitions. Second operand 31 states. [2018-12-09 01:32:13,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:13,399 INFO L93 Difference]: Finished difference Result 3445 states and 4288 transitions. [2018-12-09 01:32:13,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-12-09 01:32:13,399 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 176 [2018-12-09 01:32:13,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:13,402 INFO L225 Difference]: With dead ends: 3445 [2018-12-09 01:32:13,402 INFO L226 Difference]: Without dead ends: 3443 [2018-12-09 01:32:13,403 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 [2018-12-09 01:32:13,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3443 states. [2018-12-09 01:32:13,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3443 to 1820. [2018-12-09 01:32:13,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1820 states. [2018-12-09 01:32:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2122 transitions. [2018-12-09 01:32:13,442 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2122 transitions. Word has length 176 [2018-12-09 01:32:13,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:13,442 INFO L480 AbstractCegarLoop]: Abstraction has 1820 states and 2122 transitions. [2018-12-09 01:32:13,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-12-09 01:32:13,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2122 transitions. [2018-12-09 01:32:13,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-12-09 01:32:13,443 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:13,443 INFO L402 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:13,444 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:13,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:13,444 INFO L82 PathProgramCache]: Analyzing trace with hash 67740508, now seen corresponding path program 29 times [2018-12-09 01:32:13,444 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:13,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:13,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:13,445 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:13,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:13,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:13,774 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:13,780 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 01:32:13,809 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-12-09 01:32:13,810 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:13,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:13,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:13,843 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:13,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-12-09 01:32:13,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-12-09 01:32:13,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-12-09 01:32:13,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-12-09 01:32:13,844 INFO L87 Difference]: Start difference. First operand 1820 states and 2122 transitions. Second operand 32 states. [2018-12-09 01:32:14,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:14,002 INFO L93 Difference]: Finished difference Result 3584 states and 4462 transitions. [2018-12-09 01:32:14,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-12-09 01:32:14,002 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 182 [2018-12-09 01:32:14,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:14,005 INFO L225 Difference]: With dead ends: 3584 [2018-12-09 01:32:14,005 INFO L226 Difference]: Without dead ends: 3582 [2018-12-09 01:32:14,005 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 [2018-12-09 01:32:14,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2018-12-09 01:32:14,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 1889. [2018-12-09 01:32:14,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2018-12-09 01:32:14,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2203 transitions. [2018-12-09 01:32:14,032 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2203 transitions. Word has length 182 [2018-12-09 01:32:14,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:14,032 INFO L480 AbstractCegarLoop]: Abstraction has 1889 states and 2203 transitions. [2018-12-09 01:32:14,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-12-09 01:32:14,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2203 transitions. [2018-12-09 01:32:14,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-12-09 01:32:14,033 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:14,033 INFO L402 BasicCegarLoop]: trace histogram [30, 29, 29, 19, 19, 19, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:14,033 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:14,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:14,033 INFO L82 PathProgramCache]: Analyzing trace with hash 912269923, now seen corresponding path program 13 times [2018-12-09 01:32:14,033 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:14,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:14,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:14,034 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:14,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 799 proven. 1064 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-12-09 01:32:14,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:14,196 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:14,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:14,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 799 proven. 1064 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-12-09 01:32:14,262 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:14,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-12-09 01:32:14,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-09 01:32:14,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-09 01:32:14,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-12-09 01:32:14,263 INFO L87 Difference]: Start difference. First operand 1889 states and 2203 transitions. Second operand 22 states. [2018-12-09 01:32:14,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:14,313 INFO L93 Difference]: Finished difference Result 3673 states and 4302 transitions. [2018-12-09 01:32:14,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-12-09 01:32:14,314 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 184 [2018-12-09 01:32:14,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:14,315 INFO L225 Difference]: With dead ends: 3673 [2018-12-09 01:32:14,315 INFO L226 Difference]: Without dead ends: 1899 [2018-12-09 01:32:14,316 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 [2018-12-09 01:32:14,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2018-12-09 01:32:14,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1895. [2018-12-09 01:32:14,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2018-12-09 01:32:14,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2209 transitions. [2018-12-09 01:32:14,341 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2209 transitions. Word has length 184 [2018-12-09 01:32:14,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:14,342 INFO L480 AbstractCegarLoop]: Abstraction has 1895 states and 2209 transitions. [2018-12-09 01:32:14,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-09 01:32:14,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2209 transitions. [2018-12-09 01:32:14,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-12-09 01:32:14,343 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:14,343 INFO L402 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:14,343 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:14,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:14,343 INFO L82 PathProgramCache]: Analyzing trace with hash 208587253, now seen corresponding path program 30 times [2018-12-09 01:32:14,343 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:14,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:14,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:14,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:14,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:14,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:14,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:14,614 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:14,620 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 01:32:14,651 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-12-09 01:32:14,651 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:14,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:14,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:14,686 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:14,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-12-09 01:32:14,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-12-09 01:32:14,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-12-09 01:32:14,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-12-09 01:32:14,686 INFO L87 Difference]: Start difference. First operand 1895 states and 2209 transitions. Second operand 33 states. [2018-12-09 01:32:14,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:14,832 INFO L93 Difference]: Finished difference Result 3729 states and 4642 transitions. [2018-12-09 01:32:14,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-12-09 01:32:14,832 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 188 [2018-12-09 01:32:14,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:14,834 INFO L225 Difference]: With dead ends: 3729 [2018-12-09 01:32:14,834 INFO L226 Difference]: Without dead ends: 3727 [2018-12-09 01:32:14,835 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 [2018-12-09 01:32:14,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2018-12-09 01:32:14,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 1964. [2018-12-09 01:32:14,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1964 states. [2018-12-09 01:32:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 2290 transitions. [2018-12-09 01:32:14,863 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 2290 transitions. Word has length 188 [2018-12-09 01:32:14,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:14,863 INFO L480 AbstractCegarLoop]: Abstraction has 1964 states and 2290 transitions. [2018-12-09 01:32:14,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-12-09 01:32:14,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 2290 transitions. [2018-12-09 01:32:14,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-12-09 01:32:14,864 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:14,864 INFO L402 BasicCegarLoop]: trace histogram [31, 30, 30, 20, 20, 20, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:14,864 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:14,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:14,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1172961604, now seen corresponding path program 14 times [2018-12-09 01:32:14,864 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:14,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:14,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:14,865 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:14,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 840 proven. 1180 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-12-09 01:32:15,019 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:15,019 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:15,025 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:32:15,042 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:32:15,042 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:15,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 840 proven. 1180 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-12-09 01:32:15,073 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:15,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-12-09 01:32:15,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-12-09 01:32:15,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-12-09 01:32:15,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-12-09 01:32:15,074 INFO L87 Difference]: Start difference. First operand 1964 states and 2290 transitions. Second operand 23 states. [2018-12-09 01:32:15,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:15,130 INFO L93 Difference]: Finished difference Result 3817 states and 4470 transitions. [2018-12-09 01:32:15,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-12-09 01:32:15,130 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 190 [2018-12-09 01:32:15,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:15,131 INFO L225 Difference]: With dead ends: 3817 [2018-12-09 01:32:15,131 INFO L226 Difference]: Without dead ends: 1974 [2018-12-09 01:32:15,133 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 [2018-12-09 01:32:15,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2018-12-09 01:32:15,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1970. [2018-12-09 01:32:15,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1970 states. [2018-12-09 01:32:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 2296 transitions. [2018-12-09 01:32:15,151 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 2296 transitions. Word has length 190 [2018-12-09 01:32:15,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:15,151 INFO L480 AbstractCegarLoop]: Abstraction has 1970 states and 2296 transitions. [2018-12-09 01:32:15,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-12-09 01:32:15,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 2296 transitions. [2018-12-09 01:32:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-12-09 01:32:15,152 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:15,152 INFO L402 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:15,152 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:15,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:15,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1064884686, now seen corresponding path program 31 times [2018-12-09 01:32:15,152 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:15,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:15,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:15,153 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:15,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:15,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:15,438 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:15,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:15,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:15,495 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:15,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-12-09 01:32:15,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-12-09 01:32:15,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-12-09 01:32:15,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-12-09 01:32:15,496 INFO L87 Difference]: Start difference. First operand 1970 states and 2296 transitions. Second operand 34 states. [2018-12-09 01:32:15,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:15,678 INFO L93 Difference]: Finished difference Result 3874 states and 4822 transitions. [2018-12-09 01:32:15,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-12-09 01:32:15,679 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 194 [2018-12-09 01:32:15,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:15,681 INFO L225 Difference]: With dead ends: 3874 [2018-12-09 01:32:15,681 INFO L226 Difference]: Without dead ends: 3872 [2018-12-09 01:32:15,682 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 [2018-12-09 01:32:15,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2018-12-09 01:32:15,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2039. [2018-12-09 01:32:15,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2039 states. [2018-12-09 01:32:15,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2377 transitions. [2018-12-09 01:32:15,711 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2377 transitions. Word has length 194 [2018-12-09 01:32:15,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:15,711 INFO L480 AbstractCegarLoop]: Abstraction has 2039 states and 2377 transitions. [2018-12-09 01:32:15,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-12-09 01:32:15,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2377 transitions. [2018-12-09 01:32:15,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-12-09 01:32:15,712 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:15,712 INFO L402 BasicCegarLoop]: trace histogram [32, 31, 31, 21, 21, 21, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:15,712 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:15,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:15,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1390117973, now seen corresponding path program 15 times [2018-12-09 01:32:15,713 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:15,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:15,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:15,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:15,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 881 proven. 1302 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-12-09 01:32:15,906 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:15,906 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:15,913 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:32:15,932 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-12-09 01:32:15,932 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:15,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 962 proven. 341 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2018-12-09 01:32:16,123 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:16,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 13] total 36 [2018-12-09 01:32:16,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-12-09 01:32:16,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-12-09 01:32:16,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-12-09 01:32:16,124 INFO L87 Difference]: Start difference. First operand 2039 states and 2377 transitions. Second operand 36 states. [2018-12-09 01:32:16,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:16,228 INFO L93 Difference]: Finished difference Result 4124 states and 4835 transitions. [2018-12-09 01:32:16,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-12-09 01:32:16,228 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 196 [2018-12-09 01:32:16,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:16,230 INFO L225 Difference]: With dead ends: 4124 [2018-12-09 01:32:16,230 INFO L226 Difference]: Without dead ends: 2212 [2018-12-09 01:32:16,232 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 [2018-12-09 01:32:16,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2018-12-09 01:32:16,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 2180. [2018-12-09 01:32:16,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2180 states. [2018-12-09 01:32:16,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 2540 transitions. [2018-12-09 01:32:16,268 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 2540 transitions. Word has length 196 [2018-12-09 01:32:16,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:16,268 INFO L480 AbstractCegarLoop]: Abstraction has 2180 states and 2540 transitions. [2018-12-09 01:32:16,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-12-09 01:32:16,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 2540 transitions. [2018-12-09 01:32:16,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-12-09 01:32:16,269 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:16,269 INFO L402 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:16,270 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:16,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:16,270 INFO L82 PathProgramCache]: Analyzing trace with hash -677125401, now seen corresponding path program 32 times [2018-12-09 01:32:16,270 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:16,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:16,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:16,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:16,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 3072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:16,569 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:16,569 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:16,574 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:32:16,591 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:32:16,591 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:16,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 3072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:16,640 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:16,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-12-09 01:32:16,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-12-09 01:32:16,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-12-09 01:32:16,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-12-09 01:32:16,641 INFO L87 Difference]: Start difference. First operand 2180 states and 2540 transitions. Second operand 35 states. [2018-12-09 01:32:16,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:16,868 INFO L93 Difference]: Finished difference Result 4286 states and 5335 transitions. [2018-12-09 01:32:16,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-12-09 01:32:16,868 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 200 [2018-12-09 01:32:16,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:16,870 INFO L225 Difference]: With dead ends: 4286 [2018-12-09 01:32:16,870 INFO L226 Difference]: Without dead ends: 4284 [2018-12-09 01:32:16,871 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 [2018-12-09 01:32:16,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4284 states. [2018-12-09 01:32:16,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4284 to 2255. [2018-12-09 01:32:16,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2255 states. [2018-12-09 01:32:16,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 2628 transitions. [2018-12-09 01:32:16,901 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 2628 transitions. Word has length 200 [2018-12-09 01:32:16,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:16,901 INFO L480 AbstractCegarLoop]: Abstraction has 2255 states and 2628 transitions. [2018-12-09 01:32:16,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-12-09 01:32:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 2628 transitions. [2018-12-09 01:32:16,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-12-09 01:32:16,902 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:16,902 INFO L402 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:16,902 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:16,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:16,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1507855040, now seen corresponding path program 33 times [2018-12-09 01:32:16,902 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:16,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:16,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:16,903 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:16,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:17,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:17,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:17,224 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:17,230 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:32:17,263 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-12-09 01:32:17,263 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:17,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:17,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:17,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:17,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-12-09 01:32:17,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-12-09 01:32:17,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-12-09 01:32:17,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-12-09 01:32:17,336 INFO L87 Difference]: Start difference. First operand 2255 states and 2628 transitions. Second operand 36 states. [2018-12-09 01:32:17,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:17,551 INFO L93 Difference]: Finished difference Result 4437 states and 5524 transitions. [2018-12-09 01:32:17,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-12-09 01:32:17,552 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 206 [2018-12-09 01:32:17,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:17,554 INFO L225 Difference]: With dead ends: 4437 [2018-12-09 01:32:17,554 INFO L226 Difference]: Without dead ends: 4435 [2018-12-09 01:32:17,555 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 [2018-12-09 01:32:17,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4435 states. [2018-12-09 01:32:17,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4435 to 2330. [2018-12-09 01:32:17,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2330 states. [2018-12-09 01:32:17,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 2716 transitions. [2018-12-09 01:32:17,589 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 2716 transitions. Word has length 206 [2018-12-09 01:32:17,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:17,589 INFO L480 AbstractCegarLoop]: Abstraction has 2330 states and 2716 transitions. [2018-12-09 01:32:17,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-12-09 01:32:17,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 2716 transitions. [2018-12-09 01:32:17,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-12-09 01:32:17,590 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:17,590 INFO L402 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:17,590 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:17,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:17,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1003561177, now seen corresponding path program 34 times [2018-12-09 01:32:17,591 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:17,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:17,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:17,591 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:17,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:17,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:17,936 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:17,936 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:17,941 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:32:17,959 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:32:17,960 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:17,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:17,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:18,012 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:18,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-12-09 01:32:18,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-12-09 01:32:18,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-12-09 01:32:18,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-12-09 01:32:18,014 INFO L87 Difference]: Start difference. First operand 2330 states and 2716 transitions. Second operand 37 states. [2018-12-09 01:32:18,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:18,205 INFO L93 Difference]: Finished difference Result 4588 states and 5713 transitions. [2018-12-09 01:32:18,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-12-09 01:32:18,205 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 212 [2018-12-09 01:32:18,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:18,208 INFO L225 Difference]: With dead ends: 4588 [2018-12-09 01:32:18,208 INFO L226 Difference]: Without dead ends: 4586 [2018-12-09 01:32:18,209 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-12-09 01:32:18,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2018-12-09 01:32:18,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 2405. [2018-12-09 01:32:18,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2405 states. [2018-12-09 01:32:18,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 2804 transitions. [2018-12-09 01:32:18,241 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 2804 transitions. Word has length 212 [2018-12-09 01:32:18,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:18,241 INFO L480 AbstractCegarLoop]: Abstraction has 2405 states and 2804 transitions. [2018-12-09 01:32:18,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-12-09 01:32:18,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 2804 transitions. [2018-12-09 01:32:18,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-12-09 01:32:18,242 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:18,242 INFO L402 BasicCegarLoop]: trace histogram [35, 34, 34, 23, 23, 23, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:18,242 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:18,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:18,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1107148698, now seen corresponding path program 16 times [2018-12-09 01:32:18,243 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:18,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:18,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:18,243 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:18,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:18,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2984 backedges. 1057 proven. 1564 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-12-09 01:32:18,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:18,443 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:18,449 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:32:18,468 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:32:18,468 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:18,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:18,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2984 backedges. 1057 proven. 1564 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-12-09 01:32:18,512 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:18,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-12-09 01:32:18,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-12-09 01:32:18,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-12-09 01:32:18,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-12-09 01:32:18,513 INFO L87 Difference]: Start difference. First operand 2405 states and 2804 transitions. Second operand 26 states. [2018-12-09 01:32:18,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:18,573 INFO L93 Difference]: Finished difference Result 4681 states and 5480 transitions. [2018-12-09 01:32:18,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-12-09 01:32:18,573 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 214 [2018-12-09 01:32:18,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:18,575 INFO L225 Difference]: With dead ends: 4681 [2018-12-09 01:32:18,575 INFO L226 Difference]: Without dead ends: 2415 [2018-12-09 01:32:18,576 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 [2018-12-09 01:32:18,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2018-12-09 01:32:18,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 2411. [2018-12-09 01:32:18,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2411 states. [2018-12-09 01:32:18,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 2810 transitions. [2018-12-09 01:32:18,599 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 2810 transitions. Word has length 214 [2018-12-09 01:32:18,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:18,599 INFO L480 AbstractCegarLoop]: Abstraction has 2411 states and 2810 transitions. [2018-12-09 01:32:18,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-12-09 01:32:18,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 2810 transitions. [2018-12-09 01:32:18,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-12-09 01:32:18,600 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:18,600 INFO L402 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:18,600 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:18,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:18,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1380939186, now seen corresponding path program 35 times [2018-12-09 01:32:18,601 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:18,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:18,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:18,601 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:18,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:18,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:18,934 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:18,940 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 01:32:18,975 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-12-09 01:32:18,975 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:18,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:19,015 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:19,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-12-09 01:32:19,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-12-09 01:32:19,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-12-09 01:32:19,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-12-09 01:32:19,016 INFO L87 Difference]: Start difference. First operand 2411 states and 2810 transitions. Second operand 38 states. [2018-12-09 01:32:19,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:19,221 INFO L93 Difference]: Finished difference Result 4745 states and 5908 transitions. [2018-12-09 01:32:19,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-12-09 01:32:19,221 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 218 [2018-12-09 01:32:19,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:19,224 INFO L225 Difference]: With dead ends: 4745 [2018-12-09 01:32:19,225 INFO L226 Difference]: Without dead ends: 4743 [2018-12-09 01:32:19,226 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-12-09 01:32:19,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4743 states. [2018-12-09 01:32:19,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4743 to 2486. [2018-12-09 01:32:19,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2486 states. [2018-12-09 01:32:19,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 2898 transitions. [2018-12-09 01:32:19,267 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 2898 transitions. Word has length 218 [2018-12-09 01:32:19,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:19,267 INFO L480 AbstractCegarLoop]: Abstraction has 2486 states and 2898 transitions. [2018-12-09 01:32:19,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-12-09 01:32:19,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 2898 transitions. [2018-12-09 01:32:19,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-12-09 01:32:19,268 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:19,268 INFO L402 BasicCegarLoop]: trace histogram [36, 35, 35, 24, 24, 24, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:19,268 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:19,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:19,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1304804813, now seen corresponding path program 17 times [2018-12-09 01:32:19,268 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:19,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:19,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:19,269 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:19,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:19,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3169 backedges. 1450 proven. 1299 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-12-09 01:32:19,457 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:19,457 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:19,464 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 01:32:19,497 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2018-12-09 01:32:19,497 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:19,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3169 backedges. 1102 proven. 1704 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-12-09 01:32:19,712 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:19,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27] total 51 [2018-12-09 01:32:19,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-12-09 01:32:19,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-12-09 01:32:19,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-12-09 01:32:19,713 INFO L87 Difference]: Start difference. First operand 2486 states and 2898 transitions. Second operand 51 states. [2018-12-09 01:32:19,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:19,887 INFO L93 Difference]: Finished difference Result 6243 states and 7514 transitions. [2018-12-09 01:32:19,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-12-09 01:32:19,887 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 220 [2018-12-09 01:32:19,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:19,889 INFO L225 Difference]: With dead ends: 6243 [2018-12-09 01:32:19,890 INFO L226 Difference]: Without dead ends: 3902 [2018-12-09 01:32:19,892 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 [2018-12-09 01:32:19,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2018-12-09 01:32:19,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3866. [2018-12-09 01:32:19,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3866 states. [2018-12-09 01:32:19,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3866 states to 3866 states and 4512 transitions. [2018-12-09 01:32:19,942 INFO L78 Accepts]: Start accepts. Automaton has 3866 states and 4512 transitions. Word has length 220 [2018-12-09 01:32:19,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:19,942 INFO L480 AbstractCegarLoop]: Abstraction has 3866 states and 4512 transitions. [2018-12-09 01:32:19,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-12-09 01:32:19,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3866 states and 4512 transitions. [2018-12-09 01:32:19,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-12-09 01:32:19,943 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:19,943 INFO L402 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:19,943 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:19,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:19,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1961296843, now seen corresponding path program 36 times [2018-12-09 01:32:19,943 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:19,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:19,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:19,944 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:19,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:20,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3888 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:20,332 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:20,333 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:20,339 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 01:32:20,375 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-12-09 01:32:20,375 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:20,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3888 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:20,415 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:20,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-12-09 01:32:20,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-12-09 01:32:20,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-12-09 01:32:20,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-12-09 01:32:20,415 INFO L87 Difference]: Start difference. First operand 3866 states and 4512 transitions. Second operand 39 states. [2018-12-09 01:32:20,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:20,701 INFO L93 Difference]: Finished difference Result 7680 states and 9583 transitions. [2018-12-09 01:32:20,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-12-09 01:32:20,702 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 224 [2018-12-09 01:32:20,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:20,705 INFO L225 Difference]: With dead ends: 7680 [2018-12-09 01:32:20,705 INFO L226 Difference]: Without dead ends: 7678 [2018-12-09 01:32:20,706 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 [2018-12-09 01:32:20,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7678 states. [2018-12-09 01:32:20,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7678 to 4013. [2018-12-09 01:32:20,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4013 states. [2018-12-09 01:32:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4013 states to 4013 states and 4684 transitions. [2018-12-09 01:32:20,767 INFO L78 Accepts]: Start accepts. Automaton has 4013 states and 4684 transitions. Word has length 224 [2018-12-09 01:32:20,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:20,767 INFO L480 AbstractCegarLoop]: Abstraction has 4013 states and 4684 transitions. [2018-12-09 01:32:20,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-12-09 01:32:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 4013 states and 4684 transitions. [2018-12-09 01:32:20,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-12-09 01:32:20,768 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:20,768 INFO L402 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:20,768 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:20,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:20,768 INFO L82 PathProgramCache]: Analyzing trace with hash -375923932, now seen corresponding path program 37 times [2018-12-09 01:32:20,768 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:20,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:20,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:20,769 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:20,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:21,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:21,158 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:21,158 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:21,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:21,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:21,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:21,242 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:21,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-12-09 01:32:21,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-12-09 01:32:21,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-12-09 01:32:21,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-12-09 01:32:21,243 INFO L87 Difference]: Start difference. First operand 4013 states and 4684 transitions. Second operand 40 states. [2018-12-09 01:32:21,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:21,456 INFO L93 Difference]: Finished difference Result 7975 states and 9952 transitions. [2018-12-09 01:32:21,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-12-09 01:32:21,456 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 230 [2018-12-09 01:32:21,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:21,460 INFO L225 Difference]: With dead ends: 7975 [2018-12-09 01:32:21,460 INFO L226 Difference]: Without dead ends: 7973 [2018-12-09 01:32:21,462 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 [2018-12-09 01:32:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7973 states. [2018-12-09 01:32:21,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7973 to 4160. [2018-12-09 01:32:21,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4160 states. [2018-12-09 01:32:21,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4160 states to 4160 states and 4856 transitions. [2018-12-09 01:32:21,531 INFO L78 Accepts]: Start accepts. Automaton has 4160 states and 4856 transitions. Word has length 230 [2018-12-09 01:32:21,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:21,531 INFO L480 AbstractCegarLoop]: Abstraction has 4160 states and 4856 transitions. [2018-12-09 01:32:21,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-12-09 01:32:21,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4160 states and 4856 transitions. [2018-12-09 01:32:21,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-12-09 01:32:21,532 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:21,533 INFO L402 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:21,533 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:21,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:21,533 INFO L82 PathProgramCache]: Analyzing trace with hash -636089411, now seen corresponding path program 38 times [2018-12-09 01:32:21,533 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:21,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:21,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:21,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:21,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:21,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 4332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:21,977 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:21,977 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:21,983 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:32:22,013 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:32:22,013 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:22,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:22,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 4332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:22,056 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:22,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-12-09 01:32:22,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-12-09 01:32:22,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-12-09 01:32:22,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-12-09 01:32:22,057 INFO L87 Difference]: Start difference. First operand 4160 states and 4856 transitions. Second operand 41 states. [2018-12-09 01:32:22,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:22,261 INFO L93 Difference]: Finished difference Result 8270 states and 10321 transitions. [2018-12-09 01:32:22,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-12-09 01:32:22,262 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 236 [2018-12-09 01:32:22,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:22,266 INFO L225 Difference]: With dead ends: 8270 [2018-12-09 01:32:22,266 INFO L226 Difference]: Without dead ends: 8268 [2018-12-09 01:32:22,267 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-12-09 01:32:22,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8268 states. [2018-12-09 01:32:22,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8268 to 4307. [2018-12-09 01:32:22,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4307 states. [2018-12-09 01:32:22,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 5028 transitions. [2018-12-09 01:32:22,339 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 5028 transitions. Word has length 236 [2018-12-09 01:32:22,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:22,339 INFO L480 AbstractCegarLoop]: Abstraction has 4307 states and 5028 transitions. [2018-12-09 01:32:22,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-12-09 01:32:22,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 5028 transitions. [2018-12-09 01:32:22,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-12-09 01:32:22,340 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:22,340 INFO L402 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:22,341 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:22,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:22,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1127635562, now seen corresponding path program 39 times [2018-12-09 01:32:22,341 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:22,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:22,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:22,341 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:22,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:22,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:22,764 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:22,771 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:32:22,810 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-12-09 01:32:22,810 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:22,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:22,869 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:22,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-12-09 01:32:22,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-12-09 01:32:22,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-12-09 01:32:22,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-12-09 01:32:22,869 INFO L87 Difference]: Start difference. First operand 4307 states and 5028 transitions. Second operand 42 states. [2018-12-09 01:32:23,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:23,068 INFO L93 Difference]: Finished difference Result 8565 states and 10690 transitions. [2018-12-09 01:32:23,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-12-09 01:32:23,068 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 242 [2018-12-09 01:32:23,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:23,073 INFO L225 Difference]: With dead ends: 8565 [2018-12-09 01:32:23,074 INFO L226 Difference]: Without dead ends: 8563 [2018-12-09 01:32:23,075 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 [2018-12-09 01:32:23,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8563 states. [2018-12-09 01:32:23,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8563 to 4454. [2018-12-09 01:32:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4454 states. [2018-12-09 01:32:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 5200 transitions. [2018-12-09 01:32:23,147 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 5200 transitions. Word has length 242 [2018-12-09 01:32:23,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:23,147 INFO L480 AbstractCegarLoop]: Abstraction has 4454 states and 5200 transitions. [2018-12-09 01:32:23,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-12-09 01:32:23,147 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 5200 transitions. [2018-12-09 01:32:23,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-12-09 01:32:23,149 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:23,149 INFO L402 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:23,149 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:23,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:23,149 INFO L82 PathProgramCache]: Analyzing trace with hash -36783953, now seen corresponding path program 40 times [2018-12-09 01:32:23,149 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:23,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:23,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:23,150 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:23,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 4800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:23,606 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:23,606 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:23,617 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:32:23,639 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:32:23,640 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:23,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 4800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:23,686 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:23,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-12-09 01:32:23,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-12-09 01:32:23,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-12-09 01:32:23,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-12-09 01:32:23,687 INFO L87 Difference]: Start difference. First operand 4454 states and 5200 transitions. Second operand 43 states. [2018-12-09 01:32:23,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:23,964 INFO L93 Difference]: Finished difference Result 8860 states and 11059 transitions. [2018-12-09 01:32:23,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-12-09 01:32:23,964 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 248 [2018-12-09 01:32:23,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:23,968 INFO L225 Difference]: With dead ends: 8860 [2018-12-09 01:32:23,968 INFO L226 Difference]: Without dead ends: 8858 [2018-12-09 01:32:23,970 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 [2018-12-09 01:32:23,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8858 states. [2018-12-09 01:32:24,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8858 to 4601. [2018-12-09 01:32:24,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4601 states. [2018-12-09 01:32:24,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 5372 transitions. [2018-12-09 01:32:24,050 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 5372 transitions. Word has length 248 [2018-12-09 01:32:24,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:24,051 INFO L480 AbstractCegarLoop]: Abstraction has 4601 states and 5372 transitions. [2018-12-09 01:32:24,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-12-09 01:32:24,051 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 5372 transitions. [2018-12-09 01:32:24,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-12-09 01:32:24,052 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:24,052 INFO L402 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:24,052 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:24,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:24,052 INFO L82 PathProgramCache]: Analyzing trace with hash -403352312, now seen corresponding path program 41 times [2018-12-09 01:32:24,052 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:24,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:24,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:24,053 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:24,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5043 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:24,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:24,527 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:24,532 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 01:32:24,574 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-12-09 01:32:24,575 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:24,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:24,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5043 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:24,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:24,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-12-09 01:32:24,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-12-09 01:32:24,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-12-09 01:32:24,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-12-09 01:32:24,622 INFO L87 Difference]: Start difference. First operand 4601 states and 5372 transitions. Second operand 44 states. [2018-12-09 01:32:24,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:24,936 INFO L93 Difference]: Finished difference Result 9155 states and 11428 transitions. [2018-12-09 01:32:24,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-12-09 01:32:24,937 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 254 [2018-12-09 01:32:24,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:24,941 INFO L225 Difference]: With dead ends: 9155 [2018-12-09 01:32:24,941 INFO L226 Difference]: Without dead ends: 9153 [2018-12-09 01:32:24,943 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 [2018-12-09 01:32:24,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9153 states. [2018-12-09 01:32:25,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9153 to 4748. [2018-12-09 01:32:25,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4748 states. [2018-12-09 01:32:25,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4748 states to 4748 states and 5544 transitions. [2018-12-09 01:32:25,022 INFO L78 Accepts]: Start accepts. Automaton has 4748 states and 5544 transitions. Word has length 254 [2018-12-09 01:32:25,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:25,022 INFO L480 AbstractCegarLoop]: Abstraction has 4748 states and 5544 transitions. [2018-12-09 01:32:25,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-12-09 01:32:25,022 INFO L276 IsEmpty]: Start isEmpty. Operand 4748 states and 5544 transitions. [2018-12-09 01:32:25,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-12-09 01:32:25,024 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:25,024 INFO L402 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:25,024 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:25,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:25,024 INFO L82 PathProgramCache]: Analyzing trace with hash -842954079, now seen corresponding path program 42 times [2018-12-09 01:32:25,024 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:25,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:25,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:25,025 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:25,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:25,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5292 backedges. 0 proven. 5292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:25,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:25,526 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:25,532 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 01:32:25,578 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-12-09 01:32:25,578 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:25,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:25,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5292 backedges. 0 proven. 5292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:25,626 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:25,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-12-09 01:32:25,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-12-09 01:32:25,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-12-09 01:32:25,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-12-09 01:32:25,627 INFO L87 Difference]: Start difference. First operand 4748 states and 5544 transitions. Second operand 45 states. [2018-12-09 01:32:25,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:25,884 INFO L93 Difference]: Finished difference Result 9450 states and 11797 transitions. [2018-12-09 01:32:25,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-12-09 01:32:25,885 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 260 [2018-12-09 01:32:25,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:25,890 INFO L225 Difference]: With dead ends: 9450 [2018-12-09 01:32:25,890 INFO L226 Difference]: Without dead ends: 9448 [2018-12-09 01:32:25,892 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 [2018-12-09 01:32:25,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9448 states. [2018-12-09 01:32:25,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9448 to 4895. [2018-12-09 01:32:25,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4895 states. [2018-12-09 01:32:25,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4895 states to 4895 states and 5716 transitions. [2018-12-09 01:32:25,974 INFO L78 Accepts]: Start accepts. Automaton has 4895 states and 5716 transitions. Word has length 260 [2018-12-09 01:32:25,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:25,974 INFO L480 AbstractCegarLoop]: Abstraction has 4895 states and 5716 transitions. [2018-12-09 01:32:25,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-12-09 01:32:25,974 INFO L276 IsEmpty]: Start isEmpty. Operand 4895 states and 5716 transitions. [2018-12-09 01:32:25,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-12-09 01:32:25,976 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:25,976 INFO L402 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:25,977 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:25,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:25,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1919641978, now seen corresponding path program 43 times [2018-12-09 01:32:25,977 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:25,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:25,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:25,978 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:25,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:26,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:26,477 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:26,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:26,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:26,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:26,561 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:26,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-12-09 01:32:26,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-12-09 01:32:26,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-12-09 01:32:26,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-12-09 01:32:26,562 INFO L87 Difference]: Start difference. First operand 4895 states and 5716 transitions. Second operand 46 states. [2018-12-09 01:32:26,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:26,868 INFO L93 Difference]: Finished difference Result 9745 states and 12166 transitions. [2018-12-09 01:32:26,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-12-09 01:32:26,868 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 266 [2018-12-09 01:32:26,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:26,873 INFO L225 Difference]: With dead ends: 9745 [2018-12-09 01:32:26,873 INFO L226 Difference]: Without dead ends: 9743 [2018-12-09 01:32:26,875 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 [2018-12-09 01:32:26,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9743 states. [2018-12-09 01:32:26,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9743 to 5042. [2018-12-09 01:32:26,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5042 states. [2018-12-09 01:32:26,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5042 states to 5042 states and 5888 transitions. [2018-12-09 01:32:26,961 INFO L78 Accepts]: Start accepts. Automaton has 5042 states and 5888 transitions. Word has length 266 [2018-12-09 01:32:26,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:26,961 INFO L480 AbstractCegarLoop]: Abstraction has 5042 states and 5888 transitions. [2018-12-09 01:32:26,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-12-09 01:32:26,961 INFO L276 IsEmpty]: Start isEmpty. Operand 5042 states and 5888 transitions. [2018-12-09 01:32:26,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-12-09 01:32:26,963 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:26,963 INFO L402 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:26,963 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:26,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:26,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1294007917, now seen corresponding path program 44 times [2018-12-09 01:32:26,963 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:26,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:26,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:26,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:26,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:27,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:27,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:27,487 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:27,495 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:32:27,517 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:32:27,517 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:27,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:27,568 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:27,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-12-09 01:32:27,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-12-09 01:32:27,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-12-09 01:32:27,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-12-09 01:32:27,568 INFO L87 Difference]: Start difference. First operand 5042 states and 5888 transitions. Second operand 47 states. [2018-12-09 01:32:27,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:27,863 INFO L93 Difference]: Finished difference Result 10040 states and 12535 transitions. [2018-12-09 01:32:27,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-12-09 01:32:27,863 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 272 [2018-12-09 01:32:27,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:27,869 INFO L225 Difference]: With dead ends: 10040 [2018-12-09 01:32:27,869 INFO L226 Difference]: Without dead ends: 10038 [2018-12-09 01:32:27,871 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 [2018-12-09 01:32:27,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10038 states. [2018-12-09 01:32:27,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10038 to 5189. [2018-12-09 01:32:27,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5189 states. [2018-12-09 01:32:27,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 6060 transitions. [2018-12-09 01:32:27,962 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 6060 transitions. Word has length 272 [2018-12-09 01:32:27,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:27,962 INFO L480 AbstractCegarLoop]: Abstraction has 5189 states and 6060 transitions. [2018-12-09 01:32:27,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-12-09 01:32:27,962 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 6060 transitions. [2018-12-09 01:32:27,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-12-09 01:32:27,965 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:27,965 INFO L402 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:27,965 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:27,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:27,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1857839852, now seen corresponding path program 45 times [2018-12-09 01:32:27,965 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:27,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:27,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:27,966 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:27,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:28,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 0 proven. 6075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:28,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:28,501 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:28,508 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:32:28,555 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-12-09 01:32:28,555 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:28,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 0 proven. 6075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:28,607 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:28,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-12-09 01:32:28,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-12-09 01:32:28,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-12-09 01:32:28,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-12-09 01:32:28,608 INFO L87 Difference]: Start difference. First operand 5189 states and 6060 transitions. Second operand 48 states. [2018-12-09 01:32:29,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:29,072 INFO L93 Difference]: Finished difference Result 10335 states and 12904 transitions. [2018-12-09 01:32:29,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-12-09 01:32:29,072 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 278 [2018-12-09 01:32:29,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:29,078 INFO L225 Difference]: With dead ends: 10335 [2018-12-09 01:32:29,078 INFO L226 Difference]: Without dead ends: 10333 [2018-12-09 01:32:29,080 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 [2018-12-09 01:32:29,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10333 states. [2018-12-09 01:32:29,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10333 to 5336. [2018-12-09 01:32:29,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5336 states. [2018-12-09 01:32:29,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5336 states to 5336 states and 6232 transitions. [2018-12-09 01:32:29,180 INFO L78 Accepts]: Start accepts. Automaton has 5336 states and 6232 transitions. Word has length 278 [2018-12-09 01:32:29,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:29,180 INFO L480 AbstractCegarLoop]: Abstraction has 5336 states and 6232 transitions. [2018-12-09 01:32:29,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-12-09 01:32:29,180 INFO L276 IsEmpty]: Start isEmpty. Operand 5336 states and 6232 transitions. [2018-12-09 01:32:29,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-12-09 01:32:29,182 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:29,182 INFO L402 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:29,182 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:29,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:29,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1319658107, now seen corresponding path program 46 times [2018-12-09 01:32:29,183 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:29,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:29,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:29,183 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:29,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:29,733 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:29,733 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:29,740 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:32:29,763 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:32:29,764 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:29,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:29,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:29,818 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:29,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-12-09 01:32:29,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-12-09 01:32:29,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-12-09 01:32:29,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-12-09 01:32:29,819 INFO L87 Difference]: Start difference. First operand 5336 states and 6232 transitions. Second operand 49 states. [2018-12-09 01:32:30,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:30,119 INFO L93 Difference]: Finished difference Result 10630 states and 13273 transitions. [2018-12-09 01:32:30,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-12-09 01:32:30,119 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 284 [2018-12-09 01:32:30,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:30,125 INFO L225 Difference]: With dead ends: 10630 [2018-12-09 01:32:30,125 INFO L226 Difference]: Without dead ends: 10628 [2018-12-09 01:32:30,127 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 [2018-12-09 01:32:30,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10628 states. [2018-12-09 01:32:30,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10628 to 5483. [2018-12-09 01:32:30,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5483 states. [2018-12-09 01:32:30,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5483 states to 5483 states and 6404 transitions. [2018-12-09 01:32:30,224 INFO L78 Accepts]: Start accepts. Automaton has 5483 states and 6404 transitions. Word has length 284 [2018-12-09 01:32:30,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:30,225 INFO L480 AbstractCegarLoop]: Abstraction has 5483 states and 6404 transitions. [2018-12-09 01:32:30,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-12-09 01:32:30,225 INFO L276 IsEmpty]: Start isEmpty. Operand 5483 states and 6404 transitions. [2018-12-09 01:32:30,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-12-09 01:32:30,228 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:30,228 INFO L402 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:30,228 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:30,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:30,228 INFO L82 PathProgramCache]: Analyzing trace with hash 448315742, now seen corresponding path program 47 times [2018-12-09 01:32:30,228 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:30,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:30,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:30,229 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:30,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 6627 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:30,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:30,806 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:30,811 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 01:32:30,878 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-12-09 01:32:30,878 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:30,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6627 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:30,935 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:30,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-12-09 01:32:30,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-12-09 01:32:30,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-12-09 01:32:30,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-12-09 01:32:30,936 INFO L87 Difference]: Start difference. First operand 5483 states and 6404 transitions. Second operand 50 states. [2018-12-09 01:32:31,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:31,220 INFO L93 Difference]: Finished difference Result 10925 states and 13642 transitions. [2018-12-09 01:32:31,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-12-09 01:32:31,220 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 290 [2018-12-09 01:32:31,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:31,225 INFO L225 Difference]: With dead ends: 10925 [2018-12-09 01:32:31,225 INFO L226 Difference]: Without dead ends: 10923 [2018-12-09 01:32:31,227 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 [2018-12-09 01:32:31,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10923 states. [2018-12-09 01:32:31,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10923 to 5630. [2018-12-09 01:32:31,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5630 states. [2018-12-09 01:32:31,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5630 states to 5630 states and 6576 transitions. [2018-12-09 01:32:31,328 INFO L78 Accepts]: Start accepts. Automaton has 5630 states and 6576 transitions. Word has length 290 [2018-12-09 01:32:31,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:31,328 INFO L480 AbstractCegarLoop]: Abstraction has 5630 states and 6576 transitions. [2018-12-09 01:32:31,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-12-09 01:32:31,328 INFO L276 IsEmpty]: Start isEmpty. Operand 5630 states and 6576 transitions. [2018-12-09 01:32:31,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-12-09 01:32:31,330 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:31,330 INFO L402 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:31,330 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:31,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:31,330 INFO L82 PathProgramCache]: Analyzing trace with hash -2003050889, now seen corresponding path program 48 times [2018-12-09 01:32:31,330 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:31,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:31,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:31,331 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:31,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6912 backedges. 0 proven. 6912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:31,961 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:31,961 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:31,967 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 01:32:32,020 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-12-09 01:32:32,020 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:32,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:32,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6912 backedges. 0 proven. 6912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:32,077 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:32,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-12-09 01:32:32,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-12-09 01:32:32,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-12-09 01:32:32,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-12-09 01:32:32,079 INFO L87 Difference]: Start difference. First operand 5630 states and 6576 transitions. Second operand 51 states. [2018-12-09 01:32:32,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:32,346 INFO L93 Difference]: Finished difference Result 11220 states and 14011 transitions. [2018-12-09 01:32:32,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-12-09 01:32:32,347 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 296 [2018-12-09 01:32:32,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:32,352 INFO L225 Difference]: With dead ends: 11220 [2018-12-09 01:32:32,352 INFO L226 Difference]: Without dead ends: 11218 [2018-12-09 01:32:32,354 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 [2018-12-09 01:32:32,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11218 states. [2018-12-09 01:32:32,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11218 to 5777. [2018-12-09 01:32:32,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5777 states. [2018-12-09 01:32:32,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5777 states to 5777 states and 6748 transitions. [2018-12-09 01:32:32,455 INFO L78 Accepts]: Start accepts. Automaton has 5777 states and 6748 transitions. Word has length 296 [2018-12-09 01:32:32,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:32,455 INFO L480 AbstractCegarLoop]: Abstraction has 5777 states and 6748 transitions. [2018-12-09 01:32:32,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-12-09 01:32:32,455 INFO L276 IsEmpty]: Start isEmpty. Operand 5777 states and 6748 transitions. [2018-12-09 01:32:32,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-12-09 01:32:32,458 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:32,458 INFO L402 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:32,458 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:32,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:32,458 INFO L82 PathProgramCache]: Analyzing trace with hash -9370416, now seen corresponding path program 49 times [2018-12-09 01:32:32,458 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:32,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:32,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:32,458 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:32,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 7203 backedges. 0 proven. 7203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:33,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:33,083 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:33,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:33,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:33,167 INFO L134 CoverageAnalysis]: Checked inductivity of 7203 backedges. 0 proven. 7203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:33,181 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:33,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-12-09 01:32:33,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-12-09 01:32:33,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-12-09 01:32:33,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-12-09 01:32:33,182 INFO L87 Difference]: Start difference. First operand 5777 states and 6748 transitions. Second operand 52 states. [2018-12-09 01:32:33,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:33,484 INFO L93 Difference]: Finished difference Result 11515 states and 14380 transitions. [2018-12-09 01:32:33,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-12-09 01:32:33,484 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 302 [2018-12-09 01:32:33,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:33,490 INFO L225 Difference]: With dead ends: 11515 [2018-12-09 01:32:33,490 INFO L226 Difference]: Without dead ends: 11513 [2018-12-09 01:32:33,492 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 [2018-12-09 01:32:33,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11513 states. [2018-12-09 01:32:33,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11513 to 5924. [2018-12-09 01:32:33,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5924 states. [2018-12-09 01:32:33,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5924 states to 5924 states and 6920 transitions. [2018-12-09 01:32:33,599 INFO L78 Accepts]: Start accepts. Automaton has 5924 states and 6920 transitions. Word has length 302 [2018-12-09 01:32:33,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:33,599 INFO L480 AbstractCegarLoop]: Abstraction has 5924 states and 6920 transitions. [2018-12-09 01:32:33,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-12-09 01:32:33,599 INFO L276 IsEmpty]: Start isEmpty. Operand 5924 states and 6920 transitions. [2018-12-09 01:32:33,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-12-09 01:32:33,601 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:33,601 INFO L402 BasicCegarLoop]: trace histogram [50, 49, 49, 26, 26, 26, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:33,602 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:33,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:33,602 INFO L82 PathProgramCache]: Analyzing trace with hash -933628791, now seen corresponding path program 18 times [2018-12-09 01:32:33,602 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:33,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:33,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:33,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:33,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6053 backedges. 2464 proven. 2002 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-12-09 01:32:33,856 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:33,856 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:33,862 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 01:32:33,902 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-12-09 01:32:33,902 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:33,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6053 backedges. 2464 proven. 2002 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-12-09 01:32:33,951 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:33,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-12-09 01:32:33,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-12-09 01:32:33,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-12-09 01:32:33,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-12-09 01:32:33,952 INFO L87 Difference]: Start difference. First operand 5924 states and 6920 transitions. Second operand 29 states. [2018-12-09 01:32:34,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:34,044 INFO L93 Difference]: Finished difference Result 11701 states and 13694 transitions. [2018-12-09 01:32:34,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-12-09 01:32:34,044 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 304 [2018-12-09 01:32:34,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:34,047 INFO L225 Difference]: With dead ends: 11701 [2018-12-09 01:32:34,047 INFO L226 Difference]: Without dead ends: 5934 [2018-12-09 01:32:34,051 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-12-09 01:32:34,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5934 states. [2018-12-09 01:32:34,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5934 to 5930. [2018-12-09 01:32:34,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5930 states. [2018-12-09 01:32:34,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5930 states to 5930 states and 6926 transitions. [2018-12-09 01:32:34,114 INFO L78 Accepts]: Start accepts. Automaton has 5930 states and 6926 transitions. Word has length 304 [2018-12-09 01:32:34,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:34,115 INFO L480 AbstractCegarLoop]: Abstraction has 5930 states and 6926 transitions. [2018-12-09 01:32:34,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-12-09 01:32:34,115 INFO L276 IsEmpty]: Start isEmpty. Operand 5930 states and 6926 transitions. [2018-12-09 01:32:34,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-12-09 01:32:34,118 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:34,118 INFO L402 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:34,118 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:34,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:34,118 INFO L82 PathProgramCache]: Analyzing trace with hash -748927895, now seen corresponding path program 50 times [2018-12-09 01:32:34,119 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:34,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:34,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:34,119 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:34,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:34,793 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:34,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:34,793 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:34,799 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:32:34,824 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:32:34,824 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:34,826 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:34,869 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:34,894 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:34,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-12-09 01:32:34,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-12-09 01:32:34,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-12-09 01:32:34,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-12-09 01:32:34,895 INFO L87 Difference]: Start difference. First operand 5930 states and 6926 transitions. Second operand 53 states. [2018-12-09 01:32:35,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:35,293 INFO L93 Difference]: Finished difference Result 11816 states and 14755 transitions. [2018-12-09 01:32:35,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-12-09 01:32:35,294 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 308 [2018-12-09 01:32:35,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:35,300 INFO L225 Difference]: With dead ends: 11816 [2018-12-09 01:32:35,300 INFO L226 Difference]: Without dead ends: 11814 [2018-12-09 01:32:35,302 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 [2018-12-09 01:32:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11814 states. [2018-12-09 01:32:35,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11814 to 6077. [2018-12-09 01:32:35,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6077 states. [2018-12-09 01:32:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6077 states to 6077 states and 7098 transitions. [2018-12-09 01:32:35,410 INFO L78 Accepts]: Start accepts. Automaton has 6077 states and 7098 transitions. Word has length 308 [2018-12-09 01:32:35,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:35,410 INFO L480 AbstractCegarLoop]: Abstraction has 6077 states and 7098 transitions. [2018-12-09 01:32:35,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-12-09 01:32:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 6077 states and 7098 transitions. [2018-12-09 01:32:35,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-12-09 01:32:35,412 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:35,412 INFO L402 BasicCegarLoop]: trace histogram [51, 50, 50, 27, 27, 27, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:35,413 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:35,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:35,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1316205026, now seen corresponding path program 19 times [2018-12-09 01:32:35,413 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:35,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:35,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:35,413 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:35,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6304 backedges. 2557 proven. 2160 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-12-09 01:32:35,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:35,674 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:35,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:35,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6304 backedges. 2557 proven. 2160 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-12-09 01:32:35,763 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:35,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-12-09 01:32:35,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-12-09 01:32:35,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-12-09 01:32:35,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-12-09 01:32:35,764 INFO L87 Difference]: Start difference. First operand 6077 states and 7098 transitions. Second operand 30 states. [2018-12-09 01:32:35,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:35,855 INFO L93 Difference]: Finished difference Result 12001 states and 14044 transitions. [2018-12-09 01:32:35,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-12-09 01:32:35,856 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 310 [2018-12-09 01:32:35,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:35,859 INFO L225 Difference]: With dead ends: 12001 [2018-12-09 01:32:35,859 INFO L226 Difference]: Without dead ends: 6087 [2018-12-09 01:32:35,863 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-12-09 01:32:35,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6087 states. [2018-12-09 01:32:35,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6087 to 6083. [2018-12-09 01:32:35,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6083 states. [2018-12-09 01:32:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6083 states to 6083 states and 7104 transitions. [2018-12-09 01:32:35,931 INFO L78 Accepts]: Start accepts. Automaton has 6083 states and 7104 transitions. Word has length 310 [2018-12-09 01:32:35,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:35,931 INFO L480 AbstractCegarLoop]: Abstraction has 6083 states and 7104 transitions. [2018-12-09 01:32:35,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-12-09 01:32:35,931 INFO L276 IsEmpty]: Start isEmpty. Operand 6083 states and 7104 transitions. [2018-12-09 01:32:35,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-12-09 01:32:35,935 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:35,935 INFO L402 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:35,936 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:35,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:35,936 INFO L82 PathProgramCache]: Analyzing trace with hash 288730434, now seen corresponding path program 51 times [2018-12-09 01:32:35,936 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:35,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:35,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:35,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:35,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 7803 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:36,620 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:36,620 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:36,626 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:32:36,683 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-12-09 01:32:36,683 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:36,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 7803 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:36,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:36,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-12-09 01:32:36,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-12-09 01:32:36,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-12-09 01:32:36,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-12-09 01:32:36,762 INFO L87 Difference]: Start difference. First operand 6083 states and 7104 transitions. Second operand 54 states. [2018-12-09 01:32:37,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:37,033 INFO L93 Difference]: Finished difference Result 12117 states and 15130 transitions. [2018-12-09 01:32:37,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-12-09 01:32:37,033 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 314 [2018-12-09 01:32:37,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:37,040 INFO L225 Difference]: With dead ends: 12117 [2018-12-09 01:32:37,040 INFO L226 Difference]: Without dead ends: 12115 [2018-12-09 01:32:37,043 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 [2018-12-09 01:32:37,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12115 states. [2018-12-09 01:32:37,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12115 to 6230. [2018-12-09 01:32:37,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6230 states. [2018-12-09 01:32:37,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 7276 transitions. [2018-12-09 01:32:37,158 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 7276 transitions. Word has length 314 [2018-12-09 01:32:37,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:37,158 INFO L480 AbstractCegarLoop]: Abstraction has 6230 states and 7276 transitions. [2018-12-09 01:32:37,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-12-09 01:32:37,158 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 7276 transitions. [2018-12-09 01:32:37,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-12-09 01:32:37,160 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:37,161 INFO L402 BasicCegarLoop]: trace histogram [52, 51, 51, 28, 28, 28, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:37,161 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:37,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:37,161 INFO L82 PathProgramCache]: Analyzing trace with hash 2073446523, now seen corresponding path program 20 times [2018-12-09 01:32:37,161 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:37,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:37,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:37,161 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:37,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 2650 proven. 2324 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-12-09 01:32:37,425 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:37,425 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:37,433 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:32:37,459 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:32:37,459 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:37,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 2650 proven. 2324 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-12-09 01:32:37,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:37,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-12-09 01:32:37,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-12-09 01:32:37,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-12-09 01:32:37,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-12-09 01:32:37,511 INFO L87 Difference]: Start difference. First operand 6230 states and 7276 transitions. Second operand 31 states. [2018-12-09 01:32:37,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:37,606 INFO L93 Difference]: Finished difference Result 12301 states and 14394 transitions. [2018-12-09 01:32:37,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-12-09 01:32:37,606 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 316 [2018-12-09 01:32:37,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:37,610 INFO L225 Difference]: With dead ends: 12301 [2018-12-09 01:32:37,610 INFO L226 Difference]: Without dead ends: 6240 [2018-12-09 01:32:37,614 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 [2018-12-09 01:32:37,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2018-12-09 01:32:37,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 6236. [2018-12-09 01:32:37,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6236 states. [2018-12-09 01:32:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 7282 transitions. [2018-12-09 01:32:37,683 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 7282 transitions. Word has length 316 [2018-12-09 01:32:37,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:37,683 INFO L480 AbstractCegarLoop]: Abstraction has 6236 states and 7282 transitions. [2018-12-09 01:32:37,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-12-09 01:32:37,683 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 7282 transitions. [2018-12-09 01:32:37,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-12-09 01:32:37,685 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:37,686 INFO L402 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:37,686 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:37,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:37,686 INFO L82 PathProgramCache]: Analyzing trace with hash 663310171, now seen corresponding path program 52 times [2018-12-09 01:32:37,686 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:37,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:37,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:37,686 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:37,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:38,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8112 backedges. 0 proven. 8112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:32:38,394 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:38,394 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:38,399 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:32:38,425 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:32:38,425 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:38,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8112 backedges. 8111 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 01:32:39,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 01:32:39,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [54] imperfect sequences [54] total 107 [2018-12-09 01:32:39,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-12-09 01:32:39,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-12-09 01:32:39,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2915, Invalid=8427, Unknown=0, NotChecked=0, Total=11342 [2018-12-09 01:32:39,764 INFO L87 Difference]: Start difference. First operand 6236 states and 7282 transitions. Second operand 107 states. [2018-12-09 01:32:43,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:43,522 INFO L93 Difference]: Finished difference Result 9680 states and 11284 transitions. [2018-12-09 01:32:43,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-12-09 01:32:43,523 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 320 [2018-12-09 01:32:43,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:43,525 INFO L225 Difference]: With dead ends: 9680 [2018-12-09 01:32:43,525 INFO L226 Difference]: Without dead ends: 3619 [2018-12-09 01:32:43,531 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16750 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=16944, Invalid=50916, Unknown=0, NotChecked=0, Total=67860 [2018-12-09 01:32:43,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3619 states. [2018-12-09 01:32:43,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3619 to 455. [2018-12-09 01:32:43,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-12-09 01:32:43,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 477 transitions. [2018-12-09 01:32:43,549 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 477 transitions. Word has length 320 [2018-12-09 01:32:43,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:43,549 INFO L480 AbstractCegarLoop]: Abstraction has 455 states and 477 transitions. [2018-12-09 01:32:43,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-12-09 01:32:43,549 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 477 transitions. [2018-12-09 01:32:43,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-12-09 01:32:43,549 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:43,550 INFO L402 BasicCegarLoop]: trace histogram [53, 52, 52, 29, 29, 29, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:43,550 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:43,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:43,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1267320916, now seen corresponding path program 21 times [2018-12-09 01:32:43,550 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:43,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:43,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:43,550 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:43,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 2743 proven. 2494 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-12-09 01:32:43,835 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:43,835 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:43,841 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:32:43,890 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2018-12-09 01:32:43,890 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:43,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 2820 proven. 1680 refuted. 0 times theorem prover too weak. 2324 trivial. 0 not checked. [2018-12-09 01:32:44,416 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:44,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 26] total 57 [2018-12-09 01:32:44,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-12-09 01:32:44,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-12-09 01:32:44,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-12-09 01:32:44,417 INFO L87 Difference]: Start difference. First operand 455 states and 477 transitions. Second operand 57 states. [2018-12-09 01:32:44,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:44,592 INFO L93 Difference]: Finished difference Result 604 states and 627 transitions. [2018-12-09 01:32:44,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-12-09 01:32:44,592 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 322 [2018-12-09 01:32:44,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:44,593 INFO L225 Difference]: With dead ends: 604 [2018-12-09 01:32:44,593 INFO L226 Difference]: Without dead ends: 462 [2018-12-09 01:32:44,593 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 [2018-12-09 01:32:44,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2018-12-09 01:32:44,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 461. [2018-12-09 01:32:44,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-12-09 01:32:44,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 481 transitions. [2018-12-09 01:32:44,603 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 481 transitions. Word has length 322 [2018-12-09 01:32:44,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:44,604 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 481 transitions. [2018-12-09 01:32:44,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-12-09 01:32:44,604 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 481 transitions. [2018-12-09 01:32:44,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-12-09 01:32:44,604 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:44,605 INFO L402 BasicCegarLoop]: trace histogram [56, 55, 55, 31, 31, 31, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:44,605 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:44,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:44,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1022796583, now seen corresponding path program 22 times [2018-12-09 01:32:44,605 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:44,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:44,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:44,605 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:44,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:44,894 INFO L134 CoverageAnalysis]: Checked inductivity of 7635 backedges. 3055 proven. 2852 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-09 01:32:44,894 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:44,894 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:44,902 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:32:44,930 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:32:44,930 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:44,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 7635 backedges. 3055 proven. 2852 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-09 01:32:44,987 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:44,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-12-09 01:32:44,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-12-09 01:32:44,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-12-09 01:32:44,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-12-09 01:32:44,988 INFO L87 Difference]: Start difference. First operand 461 states and 481 transitions. Second operand 34 states. [2018-12-09 01:32:45,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:45,059 INFO L93 Difference]: Finished difference Result 609 states and 629 transitions. [2018-12-09 01:32:45,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-12-09 01:32:45,059 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 340 [2018-12-09 01:32:45,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:45,060 INFO L225 Difference]: With dead ends: 609 [2018-12-09 01:32:45,060 INFO L226 Difference]: Without dead ends: 461 [2018-12-09 01:32:45,060 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 [2018-12-09 01:32:45,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-12-09 01:32:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-12-09 01:32:45,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-12-09 01:32:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 480 transitions. [2018-12-09 01:32:45,071 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 480 transitions. Word has length 340 [2018-12-09 01:32:45,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:45,071 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 480 transitions. [2018-12-09 01:32:45,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-12-09 01:32:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 480 transitions. [2018-12-09 01:32:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-12-09 01:32:45,072 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:45,072 INFO L402 BasicCegarLoop]: trace histogram [57, 56, 56, 32, 32, 32, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:45,073 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:45,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:45,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1390337614, now seen corresponding path program 23 times [2018-12-09 01:32:45,073 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:45,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:45,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:45,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:45,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:45,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7920 backedges. 3152 proven. 3040 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-09 01:32:45,397 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:45,397 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:45,402 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 01:32:45,453 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-12-09 01:32:45,453 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:45,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 7920 backedges. 3152 proven. 3040 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-09 01:32:45,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:45,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-12-09 01:32:45,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-12-09 01:32:45,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-12-09 01:32:45,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-12-09 01:32:45,512 INFO L87 Difference]: Start difference. First operand 461 states and 480 transitions. Second operand 35 states. [2018-12-09 01:32:45,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:45,595 INFO L93 Difference]: Finished difference Result 609 states and 628 transitions. [2018-12-09 01:32:45,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-12-09 01:32:45,595 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 346 [2018-12-09 01:32:45,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:45,596 INFO L225 Difference]: With dead ends: 609 [2018-12-09 01:32:45,596 INFO L226 Difference]: Without dead ends: 461 [2018-12-09 01:32:45,596 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 [2018-12-09 01:32:45,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-12-09 01:32:45,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-12-09 01:32:45,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-12-09 01:32:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 479 transitions. [2018-12-09 01:32:45,605 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 479 transitions. Word has length 346 [2018-12-09 01:32:45,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:45,605 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 479 transitions. [2018-12-09 01:32:45,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-12-09 01:32:45,605 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 479 transitions. [2018-12-09 01:32:45,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-12-09 01:32:45,606 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:45,606 INFO L402 BasicCegarLoop]: trace histogram [58, 57, 57, 33, 33, 33, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:45,606 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:45,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:45,606 INFO L82 PathProgramCache]: Analyzing trace with hash -2038554677, now seen corresponding path program 24 times [2018-12-09 01:32:45,606 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:45,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:45,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:45,607 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:45,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8211 backedges. 3249 proven. 3234 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-09 01:32:45,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:45,935 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:45,941 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 01:32:45,991 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2018-12-09 01:32:45,991 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:45,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:46,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8211 backedges. 3249 proven. 3234 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-09 01:32:46,051 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:46,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-12-09 01:32:46,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-12-09 01:32:46,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-12-09 01:32:46,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-12-09 01:32:46,052 INFO L87 Difference]: Start difference. First operand 461 states and 479 transitions. Second operand 36 states. [2018-12-09 01:32:46,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:46,126 INFO L93 Difference]: Finished difference Result 609 states and 627 transitions. [2018-12-09 01:32:46,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-12-09 01:32:46,126 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 352 [2018-12-09 01:32:46,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:46,127 INFO L225 Difference]: With dead ends: 609 [2018-12-09 01:32:46,127 INFO L226 Difference]: Without dead ends: 461 [2018-12-09 01:32:46,128 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-12-09 01:32:46,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-12-09 01:32:46,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-12-09 01:32:46,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-12-09 01:32:46,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 478 transitions. [2018-12-09 01:32:46,139 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 478 transitions. Word has length 352 [2018-12-09 01:32:46,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:46,139 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 478 transitions. [2018-12-09 01:32:46,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-12-09 01:32:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 478 transitions. [2018-12-09 01:32:46,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-12-09 01:32:46,140 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:46,140 INFO L402 BasicCegarLoop]: trace histogram [59, 58, 58, 34, 34, 34, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:46,141 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:46,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:46,141 INFO L82 PathProgramCache]: Analyzing trace with hash -2078251228, now seen corresponding path program 25 times [2018-12-09 01:32:46,141 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:46,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:46,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:46,142 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:46,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8508 backedges. 3346 proven. 3434 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-09 01:32:46,502 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:46,502 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:46,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:46,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 8508 backedges. 3346 proven. 3434 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-09 01:32:46,599 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:46,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-12-09 01:32:46,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-12-09 01:32:46,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-12-09 01:32:46,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-12-09 01:32:46,600 INFO L87 Difference]: Start difference. First operand 461 states and 478 transitions. Second operand 37 states. [2018-12-09 01:32:46,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:46,702 INFO L93 Difference]: Finished difference Result 609 states and 626 transitions. [2018-12-09 01:32:46,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-12-09 01:32:46,702 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 358 [2018-12-09 01:32:46,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:46,702 INFO L225 Difference]: With dead ends: 609 [2018-12-09 01:32:46,702 INFO L226 Difference]: Without dead ends: 461 [2018-12-09 01:32:46,703 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 [2018-12-09 01:32:46,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-12-09 01:32:46,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-12-09 01:32:46,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-12-09 01:32:46,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 477 transitions. [2018-12-09 01:32:46,712 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 477 transitions. Word has length 358 [2018-12-09 01:32:46,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:46,712 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 477 transitions. [2018-12-09 01:32:46,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-12-09 01:32:46,712 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 477 transitions. [2018-12-09 01:32:46,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-12-09 01:32:46,713 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:46,713 INFO L402 BasicCegarLoop]: trace histogram [60, 59, 59, 35, 35, 35, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:46,713 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:46,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:46,713 INFO L82 PathProgramCache]: Analyzing trace with hash 2126251965, now seen corresponding path program 26 times [2018-12-09 01:32:46,713 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:46,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:46,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:46,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:46,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 8811 backedges. 3443 proven. 3640 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-09 01:32:47,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:47,061 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:47,069 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:32:47,101 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:32:47,102 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:47,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8811 backedges. 3443 proven. 3640 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-09 01:32:47,169 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:47,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-12-09 01:32:47,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-12-09 01:32:47,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-12-09 01:32:47,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-12-09 01:32:47,170 INFO L87 Difference]: Start difference. First operand 461 states and 477 transitions. Second operand 38 states. [2018-12-09 01:32:47,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:47,260 INFO L93 Difference]: Finished difference Result 609 states and 625 transitions. [2018-12-09 01:32:47,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-12-09 01:32:47,261 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 364 [2018-12-09 01:32:47,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:47,261 INFO L225 Difference]: With dead ends: 609 [2018-12-09 01:32:47,261 INFO L226 Difference]: Without dead ends: 461 [2018-12-09 01:32:47,261 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-12-09 01:32:47,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-12-09 01:32:47,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-12-09 01:32:47,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-12-09 01:32:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 476 transitions. [2018-12-09 01:32:47,270 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 476 transitions. Word has length 364 [2018-12-09 01:32:47,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:47,270 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 476 transitions. [2018-12-09 01:32:47,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-12-09 01:32:47,271 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 476 transitions. [2018-12-09 01:32:47,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-12-09 01:32:47,271 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:47,271 INFO L402 BasicCegarLoop]: trace histogram [61, 60, 60, 36, 36, 36, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:47,272 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:47,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:47,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1538855318, now seen corresponding path program 27 times [2018-12-09 01:32:47,272 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:47,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:47,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:47,272 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:47,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 3540 proven. 3852 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-09 01:32:47,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:47,658 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:47,665 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:32:47,706 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2018-12-09 01:32:47,706 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:47,708 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 3758 proven. 1928 refuted. 0 times theorem prover too weak. 3434 trivial. 0 not checked. [2018-12-09 01:32:48,368 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:48,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 28] total 66 [2018-12-09 01:32:48,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-12-09 01:32:48,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-12-09 01:32:48,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-12-09 01:32:48,370 INFO L87 Difference]: Start difference. First operand 461 states and 476 transitions. Second operand 66 states. [2018-12-09 01:32:48,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:48,573 INFO L93 Difference]: Finished difference Result 622 states and 639 transitions. [2018-12-09 01:32:48,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-12-09 01:32:48,574 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 370 [2018-12-09 01:32:48,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:48,574 INFO L225 Difference]: With dead ends: 622 [2018-12-09 01:32:48,574 INFO L226 Difference]: Without dead ends: 474 [2018-12-09 01:32:48,575 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 [2018-12-09 01:32:48,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2018-12-09 01:32:48,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 473. [2018-12-09 01:32:48,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-12-09 01:32:48,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 486 transitions. [2018-12-09 01:32:48,587 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 486 transitions. Word has length 370 [2018-12-09 01:32:48,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:48,587 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 486 transitions. [2018-12-09 01:32:48,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-12-09 01:32:48,588 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 486 transitions. [2018-12-09 01:32:48,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-12-09 01:32:48,589 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:48,589 INFO L402 BasicCegarLoop]: trace histogram [65, 64, 64, 38, 38, 38, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:48,589 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:48,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:48,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1801280018, now seen corresponding path program 28 times [2018-12-09 01:32:48,589 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:48,589 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:48,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:48,590 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:48,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:49,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10364 backedges. 4042 proven. 4294 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-09 01:32:49,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:49,007 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:49,015 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:32:49,050 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:32:49,051 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:49,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 10364 backedges. 4042 proven. 4294 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-09 01:32:49,121 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:49,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-12-09 01:32:49,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-12-09 01:32:49,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-12-09 01:32:49,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-12-09 01:32:49,122 INFO L87 Difference]: Start difference. First operand 473 states and 486 transitions. Second operand 41 states. [2018-12-09 01:32:49,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:49,211 INFO L93 Difference]: Finished difference Result 633 states and 646 transitions. [2018-12-09 01:32:49,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-12-09 01:32:49,211 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 394 [2018-12-09 01:32:49,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:49,212 INFO L225 Difference]: With dead ends: 633 [2018-12-09 01:32:49,212 INFO L226 Difference]: Without dead ends: 473 [2018-12-09 01:32:49,212 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 [2018-12-09 01:32:49,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-12-09 01:32:49,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2018-12-09 01:32:49,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-12-09 01:32:49,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 485 transitions. [2018-12-09 01:32:49,224 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 485 transitions. Word has length 394 [2018-12-09 01:32:49,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:49,224 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 485 transitions. [2018-12-09 01:32:49,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-12-09 01:32:49,224 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 485 transitions. [2018-12-09 01:32:49,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-12-09 01:32:49,226 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:49,226 INFO L402 BasicCegarLoop]: trace histogram [66, 65, 65, 39, 39, 39, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:49,226 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:49,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:49,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1094430215, now seen corresponding path program 29 times [2018-12-09 01:32:49,226 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:49,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:49,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:49,227 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:49,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:49,696 INFO L134 CoverageAnalysis]: Checked inductivity of 10699 backedges. 4147 proven. 4524 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-09 01:32:49,697 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:49,697 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:49,703 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 01:32:49,765 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2018-12-09 01:32:49,765 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:49,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:49,828 INFO L134 CoverageAnalysis]: Checked inductivity of 10699 backedges. 4147 proven. 4524 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-09 01:32:49,842 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:49,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-12-09 01:32:49,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-12-09 01:32:49,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-12-09 01:32:49,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-12-09 01:32:49,843 INFO L87 Difference]: Start difference. First operand 473 states and 485 transitions. Second operand 42 states. [2018-12-09 01:32:49,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:49,929 INFO L93 Difference]: Finished difference Result 633 states and 645 transitions. [2018-12-09 01:32:49,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-12-09 01:32:49,929 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 400 [2018-12-09 01:32:49,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:49,930 INFO L225 Difference]: With dead ends: 633 [2018-12-09 01:32:49,930 INFO L226 Difference]: Without dead ends: 473 [2018-12-09 01:32:49,930 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 [2018-12-09 01:32:49,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-12-09 01:32:49,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2018-12-09 01:32:49,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-12-09 01:32:49,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 484 transitions. [2018-12-09 01:32:49,940 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 484 transitions. Word has length 400 [2018-12-09 01:32:49,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:49,940 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 484 transitions. [2018-12-09 01:32:49,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-12-09 01:32:49,940 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 484 transitions. [2018-12-09 01:32:49,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-12-09 01:32:49,941 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:49,941 INFO L402 BasicCegarLoop]: trace histogram [67, 66, 66, 40, 40, 40, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:49,941 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:49,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:49,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1284866208, now seen corresponding path program 30 times [2018-12-09 01:32:49,941 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:49,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:49,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:49,942 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:49,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 11040 backedges. 4252 proven. 4760 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-09 01:32:50,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:50,398 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:50,403 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 01:32:50,465 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2018-12-09 01:32:50,465 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:50,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:50,525 INFO L134 CoverageAnalysis]: Checked inductivity of 11040 backedges. 4252 proven. 4760 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-09 01:32:50,540 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:50,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-12-09 01:32:50,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-12-09 01:32:50,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-12-09 01:32:50,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-12-09 01:32:50,541 INFO L87 Difference]: Start difference. First operand 473 states and 484 transitions. Second operand 43 states. [2018-12-09 01:32:50,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:50,618 INFO L93 Difference]: Finished difference Result 633 states and 644 transitions. [2018-12-09 01:32:50,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-12-09 01:32:50,619 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 406 [2018-12-09 01:32:50,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:50,619 INFO L225 Difference]: With dead ends: 633 [2018-12-09 01:32:50,619 INFO L226 Difference]: Without dead ends: 473 [2018-12-09 01:32:50,619 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 [2018-12-09 01:32:50,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-12-09 01:32:50,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2018-12-09 01:32:50,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-12-09 01:32:50,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 483 transitions. [2018-12-09 01:32:50,629 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 483 transitions. Word has length 406 [2018-12-09 01:32:50,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:50,629 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 483 transitions. [2018-12-09 01:32:50,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-12-09 01:32:50,629 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 483 transitions. [2018-12-09 01:32:50,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-12-09 01:32:50,630 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:50,630 INFO L402 BasicCegarLoop]: trace histogram [68, 67, 67, 41, 41, 41, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:50,630 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:50,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:50,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1518130695, now seen corresponding path program 31 times [2018-12-09 01:32:50,630 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:50,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:50,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:50,631 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:50,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:51,118 INFO L134 CoverageAnalysis]: Checked inductivity of 11387 backedges. 4357 proven. 5002 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-09 01:32:51,119 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:51,119 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:51,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:51,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 11387 backedges. 4357 proven. 5002 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-09 01:32:51,233 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:51,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-12-09 01:32:51,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-12-09 01:32:51,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-12-09 01:32:51,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-12-09 01:32:51,234 INFO L87 Difference]: Start difference. First operand 473 states and 483 transitions. Second operand 44 states. [2018-12-09 01:32:51,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:51,321 INFO L93 Difference]: Finished difference Result 633 states and 643 transitions. [2018-12-09 01:32:51,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-12-09 01:32:51,322 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 412 [2018-12-09 01:32:51,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:51,322 INFO L225 Difference]: With dead ends: 633 [2018-12-09 01:32:51,322 INFO L226 Difference]: Without dead ends: 473 [2018-12-09 01:32:51,323 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 [2018-12-09 01:32:51,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-12-09 01:32:51,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2018-12-09 01:32:51,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-12-09 01:32:51,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 482 transitions. [2018-12-09 01:32:51,332 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 482 transitions. Word has length 412 [2018-12-09 01:32:51,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:51,332 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 482 transitions. [2018-12-09 01:32:51,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-12-09 01:32:51,332 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 482 transitions. [2018-12-09 01:32:51,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-12-09 01:32:51,333 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:51,333 INFO L402 BasicCegarLoop]: trace histogram [69, 68, 68, 42, 42, 42, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:51,333 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:51,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:51,334 INFO L82 PathProgramCache]: Analyzing trace with hash 646823378, now seen corresponding path program 32 times [2018-12-09 01:32:51,334 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:51,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:51,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:51,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:51,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:51,857 INFO L134 CoverageAnalysis]: Checked inductivity of 11740 backedges. 4462 proven. 5250 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-09 01:32:51,857 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:51,857 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:51,863 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:32:51,897 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:32:51,897 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:51,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 11740 backedges. 4462 proven. 5250 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-09 01:32:51,975 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:51,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-12-09 01:32:51,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-12-09 01:32:51,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-12-09 01:32:51,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-12-09 01:32:51,976 INFO L87 Difference]: Start difference. First operand 473 states and 482 transitions. Second operand 45 states. [2018-12-09 01:32:52,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:52,070 INFO L93 Difference]: Finished difference Result 633 states and 642 transitions. [2018-12-09 01:32:52,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-12-09 01:32:52,070 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 418 [2018-12-09 01:32:52,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:52,071 INFO L225 Difference]: With dead ends: 633 [2018-12-09 01:32:52,071 INFO L226 Difference]: Without dead ends: 473 [2018-12-09 01:32:52,071 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 [2018-12-09 01:32:52,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-12-09 01:32:52,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2018-12-09 01:32:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-12-09 01:32:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 481 transitions. [2018-12-09 01:32:52,084 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 481 transitions. Word has length 418 [2018-12-09 01:32:52,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:52,084 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 481 transitions. [2018-12-09 01:32:52,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-12-09 01:32:52,085 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 481 transitions. [2018-12-09 01:32:52,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-12-09 01:32:52,086 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:52,086 INFO L402 BasicCegarLoop]: trace histogram [70, 69, 69, 43, 43, 43, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:52,086 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:52,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:52,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1128680171, now seen corresponding path program 33 times [2018-12-09 01:32:52,087 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:52,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:52,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:52,087 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:52,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 12099 backedges. 4567 proven. 5504 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-09 01:32:52,632 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:52,632 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:52,638 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:32:52,683 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-12-09 01:32:52,683 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:52,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 12099 backedges. 4716 proven. 2133 refuted. 0 times theorem prover too weak. 5250 trivial. 0 not checked. [2018-12-09 01:32:53,471 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:53,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 29] total 74 [2018-12-09 01:32:53,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-12-09 01:32:53,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-12-09 01:32:53,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-12-09 01:32:53,472 INFO L87 Difference]: Start difference. First operand 473 states and 481 transitions. Second operand 74 states. [2018-12-09 01:32:53,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:53,709 INFO L93 Difference]: Finished difference Result 640 states and 649 transitions. [2018-12-09 01:32:53,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-12-09 01:32:53,709 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 424 [2018-12-09 01:32:53,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:53,710 INFO L225 Difference]: With dead ends: 640 [2018-12-09 01:32:53,710 INFO L226 Difference]: Without dead ends: 480 [2018-12-09 01:32:53,711 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 [2018-12-09 01:32:53,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-12-09 01:32:53,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2018-12-09 01:32:53,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-12-09 01:32:53,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 485 transitions. [2018-12-09 01:32:53,721 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 485 transitions. Word has length 424 [2018-12-09 01:32:53,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:53,721 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 485 transitions. [2018-12-09 01:32:53,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-12-09 01:32:53,721 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 485 transitions. [2018-12-09 01:32:53,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-12-09 01:32:53,722 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:53,722 INFO L402 BasicCegarLoop]: trace histogram [73, 72, 72, 45, 45, 45, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:53,723 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:53,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:53,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1209580720, now seen corresponding path program 34 times [2018-12-09 01:32:53,723 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:53,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:53,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:53,723 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:53,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:54,320 INFO L134 CoverageAnalysis]: Checked inductivity of 13176 backedges. 4959 proven. 6030 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-09 01:32:54,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:54,320 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:54,326 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:32:54,363 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:32:54,363 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:54,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:54,434 INFO L134 CoverageAnalysis]: Checked inductivity of 13176 backedges. 4959 proven. 6030 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-09 01:32:54,449 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:54,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-12-09 01:32:54,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-12-09 01:32:54,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-12-09 01:32:54,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-12-09 01:32:54,449 INFO L87 Difference]: Start difference. First operand 479 states and 485 transitions. Second operand 48 states. [2018-12-09 01:32:54,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:54,541 INFO L93 Difference]: Finished difference Result 645 states and 651 transitions. [2018-12-09 01:32:54,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-12-09 01:32:54,541 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 442 [2018-12-09 01:32:54,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:54,542 INFO L225 Difference]: With dead ends: 645 [2018-12-09 01:32:54,542 INFO L226 Difference]: Without dead ends: 479 [2018-12-09 01:32:54,542 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 [2018-12-09 01:32:54,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-12-09 01:32:54,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-12-09 01:32:54,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-12-09 01:32:54,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 484 transitions. [2018-12-09 01:32:54,552 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 484 transitions. Word has length 442 [2018-12-09 01:32:54,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:54,552 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 484 transitions. [2018-12-09 01:32:54,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-12-09 01:32:54,552 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 484 transitions. [2018-12-09 01:32:54,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-12-09 01:32:54,553 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:54,553 INFO L402 BasicCegarLoop]: trace histogram [74, 73, 73, 46, 46, 46, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:54,553 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:54,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:54,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1072811721, now seen corresponding path program 35 times [2018-12-09 01:32:54,554 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:54,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:54,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:54,554 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:54,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 13557 backedges. 5068 proven. 6302 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-09 01:32:55,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:55,153 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:55,159 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 01:32:55,236 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-12-09 01:32:55,236 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:55,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:55,309 INFO L134 CoverageAnalysis]: Checked inductivity of 13557 backedges. 5068 proven. 6302 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-09 01:32:55,324 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:55,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-12-09 01:32:55,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-12-09 01:32:55,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-12-09 01:32:55,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-12-09 01:32:55,324 INFO L87 Difference]: Start difference. First operand 479 states and 484 transitions. Second operand 49 states. [2018-12-09 01:32:55,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:55,421 INFO L93 Difference]: Finished difference Result 645 states and 650 transitions. [2018-12-09 01:32:55,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-12-09 01:32:55,421 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 448 [2018-12-09 01:32:55,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:55,422 INFO L225 Difference]: With dead ends: 645 [2018-12-09 01:32:55,422 INFO L226 Difference]: Without dead ends: 479 [2018-12-09 01:32:55,422 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 [2018-12-09 01:32:55,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-12-09 01:32:55,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-12-09 01:32:55,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-12-09 01:32:55,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 483 transitions. [2018-12-09 01:32:55,432 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 483 transitions. Word has length 448 [2018-12-09 01:32:55,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:55,432 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 483 transitions. [2018-12-09 01:32:55,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-12-09 01:32:55,432 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 483 transitions. [2018-12-09 01:32:55,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-12-09 01:32:55,433 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:55,433 INFO L402 BasicCegarLoop]: trace histogram [75, 74, 74, 47, 47, 47, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:55,433 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:55,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:55,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1951323614, now seen corresponding path program 36 times [2018-12-09 01:32:55,433 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:55,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:55,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:55,434 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:55,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:56,058 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 5177 proven. 6580 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-09 01:32:56,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:56,058 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:56,064 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 01:32:56,139 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-12-09 01:32:56,140 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:56,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:56,215 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 5177 proven. 6580 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-09 01:32:56,229 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:56,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-12-09 01:32:56,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-12-09 01:32:56,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-12-09 01:32:56,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-12-09 01:32:56,230 INFO L87 Difference]: Start difference. First operand 479 states and 483 transitions. Second operand 50 states. [2018-12-09 01:32:56,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:56,338 INFO L93 Difference]: Finished difference Result 645 states and 649 transitions. [2018-12-09 01:32:56,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-12-09 01:32:56,339 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 454 [2018-12-09 01:32:56,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:56,339 INFO L225 Difference]: With dead ends: 645 [2018-12-09 01:32:56,339 INFO L226 Difference]: Without dead ends: 479 [2018-12-09 01:32:56,339 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 [2018-12-09 01:32:56,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-12-09 01:32:56,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-12-09 01:32:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-12-09 01:32:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 482 transitions. [2018-12-09 01:32:56,349 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 482 transitions. Word has length 454 [2018-12-09 01:32:56,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:56,349 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 482 transitions. [2018-12-09 01:32:56,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-12-09 01:32:56,349 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 482 transitions. [2018-12-09 01:32:56,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-12-09 01:32:56,350 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:56,350 INFO L402 BasicCegarLoop]: trace histogram [76, 75, 75, 48, 48, 48, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:56,351 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:56,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:56,351 INFO L82 PathProgramCache]: Analyzing trace with hash 122347195, now seen corresponding path program 37 times [2018-12-09 01:32:56,351 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:56,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:56,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:56,351 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:56,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:57,013 INFO L134 CoverageAnalysis]: Checked inductivity of 14337 backedges. 5286 proven. 6864 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-09 01:32:57,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:57,014 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:57,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:57,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 14337 backedges. 5286 proven. 6864 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-09 01:32:57,151 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:57,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-12-09 01:32:57,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-12-09 01:32:57,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-12-09 01:32:57,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-12-09 01:32:57,152 INFO L87 Difference]: Start difference. First operand 479 states and 482 transitions. Second operand 51 states. [2018-12-09 01:32:57,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:57,263 INFO L93 Difference]: Finished difference Result 645 states and 648 transitions. [2018-12-09 01:32:57,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-12-09 01:32:57,263 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 460 [2018-12-09 01:32:57,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:57,264 INFO L225 Difference]: With dead ends: 645 [2018-12-09 01:32:57,264 INFO L226 Difference]: Without dead ends: 479 [2018-12-09 01:32:57,264 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 [2018-12-09 01:32:57,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-12-09 01:32:57,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-12-09 01:32:57,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-12-09 01:32:57,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 481 transitions. [2018-12-09 01:32:57,274 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 481 transitions. Word has length 460 [2018-12-09 01:32:57,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:57,274 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 481 transitions. [2018-12-09 01:32:57,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-12-09 01:32:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 481 transitions. [2018-12-09 01:32:57,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-12-09 01:32:57,275 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:57,275 INFO L402 BasicCegarLoop]: trace histogram [77, 76, 76, 49, 49, 49, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:57,275 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:57,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:57,275 INFO L82 PathProgramCache]: Analyzing trace with hash 728169620, now seen corresponding path program 38 times [2018-12-09 01:32:57,275 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:57,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:57,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:57,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:32:57,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 14736 backedges. 5395 proven. 7154 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-09 01:32:57,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:57,935 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:57,940 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:32:57,980 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:32:57,980 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:57,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:58,063 INFO L134 CoverageAnalysis]: Checked inductivity of 14736 backedges. 5395 proven. 7154 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-09 01:32:58,077 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:58,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-12-09 01:32:58,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-12-09 01:32:58,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-12-09 01:32:58,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-12-09 01:32:58,078 INFO L87 Difference]: Start difference. First operand 479 states and 481 transitions. Second operand 52 states. [2018-12-09 01:32:58,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:32:58,189 INFO L93 Difference]: Finished difference Result 645 states and 647 transitions. [2018-12-09 01:32:58,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-12-09 01:32:58,190 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 466 [2018-12-09 01:32:58,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:32:58,190 INFO L225 Difference]: With dead ends: 645 [2018-12-09 01:32:58,190 INFO L226 Difference]: Without dead ends: 479 [2018-12-09 01:32:58,190 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 [2018-12-09 01:32:58,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-12-09 01:32:58,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-12-09 01:32:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-12-09 01:32:58,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 480 transitions. [2018-12-09 01:32:58,200 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 480 transitions. Word has length 466 [2018-12-09 01:32:58,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:32:58,200 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 480 transitions. [2018-12-09 01:32:58,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-12-09 01:32:58,200 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 480 transitions. [2018-12-09 01:32:58,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-12-09 01:32:58,201 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:32:58,201 INFO L402 BasicCegarLoop]: trace histogram [78, 77, 77, 50, 50, 50, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-12-09 01:32:58,202 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:32:58,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:32:58,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1235119187, now seen corresponding path program 39 times [2018-12-09 01:32:58,202 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:32:58,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:32:58,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:58,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:32:58,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:32:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:32:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 15141 backedges. 5504 proven. 7450 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-09 01:32:58,884 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:32:58,884 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:32:58,892 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:32:58,939 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2018-12-09 01:32:58,939 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:32:58,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:32:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 15141 backedges. 5866 proven. 2411 refuted. 0 times theorem prover too weak. 6864 trivial. 0 not checked. [2018-12-09 01:32:59,859 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:32:59,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 31] total 82 [2018-12-09 01:32:59,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-12-09 01:32:59,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-12-09 01:32:59,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-12-09 01:32:59,861 INFO L87 Difference]: Start difference. First operand 479 states and 480 transitions. Second operand 82 states. [2018-12-09 01:33:00,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:33:00,102 INFO L93 Difference]: Finished difference Result 658 states and 661 transitions. [2018-12-09 01:33:00,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-12-09 01:33:00,102 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 472 [2018-12-09 01:33:00,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:33:00,103 INFO L225 Difference]: With dead ends: 658 [2018-12-09 01:33:00,103 INFO L226 Difference]: Without dead ends: 492 [2018-12-09 01:33:00,104 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 [2018-12-09 01:33:00,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2018-12-09 01:33:00,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2018-12-09 01:33:00,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2018-12-09 01:33:00,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 491 transitions. [2018-12-09 01:33:00,119 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 491 transitions. Word has length 472 [2018-12-09 01:33:00,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:33:00,119 INFO L480 AbstractCegarLoop]: Abstraction has 491 states and 491 transitions. [2018-12-09 01:33:00,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-12-09 01:33:00,120 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 491 transitions. [2018-12-09 01:33:00,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-12-09 01:33:00,121 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:33:00,121 INFO L402 BasicCegarLoop]: trace histogram [81, 80, 80, 51, 51, 51, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-12-09 01:33:00,122 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:33:00,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:33:00,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1075368980, now seen corresponding path program 40 times [2018-12-09 01:33:00,122 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:33:00,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:33:00,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:33:00,123 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:33:00,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:33:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:33:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 16300 backedges. 6693 proven. 3027 refuted. 0 times theorem prover too weak. 6580 trivial. 0 not checked. [2018-12-09 01:33:00,525 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:33:00,525 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:33:00,531 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:33:00,571 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:33:00,571 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:33:00,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:33:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 16300 backedges. 160 proven. 16140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:33:01,881 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:33:01,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 82] total 82 [2018-12-09 01:33:01,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-12-09 01:33:01,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-12-09 01:33:01,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-12-09 01:33:01,883 INFO L87 Difference]: Start difference. First operand 491 states and 491 transitions. Second operand 83 states. [2018-12-09 01:33:02,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:33:02,132 INFO L93 Difference]: Finished difference Result 799 states and 849 transitions. [2018-12-09 01:33:02,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-12-09 01:33:02,132 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 490 [2018-12-09 01:33:02,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:33:02,133 INFO L225 Difference]: With dead ends: 799 [2018-12-09 01:33:02,133 INFO L226 Difference]: Without dead ends: 798 [2018-12-09 01:33:02,133 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 [2018-12-09 01:33:02,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2018-12-09 01:33:02,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 797. [2018-12-09 01:33:02,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2018-12-09 01:33:02,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 797 transitions. [2018-12-09 01:33:02,158 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 797 transitions. Word has length 490 [2018-12-09 01:33:02,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:33:02,158 INFO L480 AbstractCegarLoop]: Abstraction has 797 states and 797 transitions. [2018-12-09 01:33:02,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-12-09 01:33:02,158 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 797 transitions. [2018-12-09 01:33:02,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2018-12-09 01:33:02,160 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:33:02,160 INFO L402 BasicCegarLoop]: trace histogram [132, 131, 131, 81, 81, 81, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-12-09 01:33:02,160 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:33:02,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:33:02,161 INFO L82 PathProgramCache]: Analyzing trace with hash -720631691, now seen corresponding path program 41 times [2018-12-09 01:33:02,161 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:33:02,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:33:02,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:33:02,161 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:33:02,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:33:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:33:03,341 INFO L134 CoverageAnalysis]: Checked inductivity of 43483 backedges. 30529 proven. 12752 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2018-12-09 01:33:03,341 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:33:03,341 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/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 [2018-12-09 01:33:03,349 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 01:33:03,533 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2018-12-09 01:33:03,533 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:33:03,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:33:03,833 INFO L134 CoverageAnalysis]: Checked inductivity of 43483 backedges. 30525 proven. 12752 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2018-12-09 01:33:03,848 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:33:03,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 83 [2018-12-09 01:33:03,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-12-09 01:33:03,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-12-09 01:33:03,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-12-09 01:33:03,850 INFO L87 Difference]: Start difference. First operand 797 states and 797 transitions. Second operand 83 states. [2018-12-09 01:33:04,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:33:04,226 INFO L93 Difference]: Finished difference Result 797 states and 797 transitions. [2018-12-09 01:33:04,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-12-09 01:33:04,226 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 796 [2018-12-09 01:33:04,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:33:04,226 INFO L225 Difference]: With dead ends: 797 [2018-12-09 01:33:04,226 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 01:33:04,227 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 [2018-12-09 01:33:04,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 01:33:04,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 01:33:04,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 01:33:04,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 01:33:04,228 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 796 [2018-12-09 01:33:04,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:33:04,228 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 01:33:04,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-12-09 01:33:04,228 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 01:33:04,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 01:33:04,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 01:33:04,561 WARN L180 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 982 DAG size of output: 455 [2018-12-09 01:33:06,096 WARN L180 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 451 DAG size of output: 400 [2018-12-09 01:33:06,099 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 01:33:06,099 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 01:33:06,099 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 01:33:06,099 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 01:33:06,099 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 01:33:06,099 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 01:33:06,099 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 14 27) no Hoare annotation was computed. [2018-12-09 01:33:06,100 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-12-09 01:33:06,100 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-12-09 01:33:06,100 INFO L448 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2018-12-09 01:33:06,100 INFO L448 ceAbstractionStarter]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2018-12-09 01:33:06,100 INFO L448 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-12-09 01:33:06,100 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 14 27) no Hoare annotation was computed. [2018-12-09 01:33:06,100 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 14 27) the Hoare annotation is: true [2018-12-09 01:33:06,100 INFO L448 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-12-09 01:33:06,100 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-12-09 01:33:06,100 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-12-09 01:33:06,100 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-12-09 01:33:06,100 INFO L448 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-12-09 01:33:06,100 INFO L448 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-12-09 01:33:06,100 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-12-09 01:33:06,100 INFO L448 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-12-09 01:33:06,101 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)))) [2018-12-09 01:33:06,101 INFO L448 ceAbstractionStarter]: For program point L18-3(lines 18 25) no Hoare annotation was computed. [2018-12-09 01:33:06,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:33:06 BoogieIcfgContainer [2018-12-09 01:33:06,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 01:33:06,124 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 01:33:06,124 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 01:33:06,125 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 01:33:06,125 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:32:02" (3/4) ... [2018-12-09 01:33:06,128 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 01:33:06,134 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 01:33:06,135 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 01:33:06,138 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-09 01:33:06,138 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 01:33:06,138 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 01:33:06,163 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0f275133-9008-4876-bfcf-8361357ae83f/bin-2019/uautomizer/witness.graphml [2018-12-09 01:33:06,163 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 01:33:06,164 INFO L168 Benchmark]: Toolchain (without parser) took 63930.12 ms. Allocated memory was 1.0 GB in the beginning and 1.6 GB in the end (delta: 537.4 MB). Free memory was 957.1 MB in the beginning and 986.4 MB in the end (delta: -29.3 MB). Peak memory consumption was 508.0 MB. Max. memory is 11.5 GB. [2018-12-09 01:33:06,164 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:33:06,164 INFO L168 Benchmark]: CACSL2BoogieTranslator took 114.42 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 945.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-09 01:33:06,165 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.44 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:33:06,165 INFO L168 Benchmark]: Boogie Preprocessor took 11.28 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:33:06,165 INFO L168 Benchmark]: RCFGBuilder took 149.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -143.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-09 01:33:06,165 INFO L168 Benchmark]: TraceAbstraction took 63602.01 ms. Allocated memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: 434.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 88.1 MB). Peak memory consumption was 702.6 MB. Max. memory is 11.5 GB. [2018-12-09 01:33:06,165 INFO L168 Benchmark]: Witness Printer took 39.17 ms. Allocated memory is still 1.6 GB. Free memory was 1.0 GB in the beginning and 986.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-12-09 01:33:06,166 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 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 114.42 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 945.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.44 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.28 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 149.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -143.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 63602.01 ms. Allocated memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: 434.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 88.1 MB). Peak memory consumption was 702.6 MB. Max. memory is 11.5 GB. * Witness Printer took 39.17 ms. Allocated memory is still 1.6 GB. Free memory was 1.0 GB in the beginning and 986.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. 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: 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: 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, 63.5s OverallTime, 98 OverallIterations, 132 TraceHistogramMax, 17.0s AutomataDifference, 0.0s DeadEndRemovalTime, 1.8s 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, 31.2s 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, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 33.8s 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...