./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 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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_879c62e2-76f1-4c82-a0b0-a5589bd1b238/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 0.1.23-0cd3be1 [2018-11-28 13:04:56,960 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:04:56,961 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:04:56,968 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:04:56,968 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:04:56,969 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:04:56,970 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:04:56,971 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:04:56,972 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:04:56,972 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:04:56,973 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:04:56,973 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:04:56,974 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:04:56,975 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:04:56,975 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:04:56,976 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:04:56,976 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:04:56,978 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:04:56,979 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:04:56,980 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:04:56,981 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:04:56,982 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:04:56,983 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:04:56,983 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:04:56,984 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:04:56,984 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:04:56,985 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:04:56,985 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:04:56,986 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:04:56,987 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:04:56,987 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:04:56,987 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:04:56,987 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:04:56,988 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:04:56,988 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:04:56,989 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:04:56,989 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-28 13:04:56,999 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:04:56,999 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:04:56,999 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:04:57,000 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:04:57,000 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:04:57,000 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:04:57,000 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:04:57,000 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:04:57,001 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 13:04:57,001 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:04:57,001 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:04:57,001 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 13:04:57,001 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:04:57,001 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 13:04:57,001 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 13:04:57,002 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:04:57,002 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:04:57,002 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 13:04:57,002 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:04:57,002 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:04:57,002 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:04:57,003 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:04:57,003 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:04:57,003 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:04:57,003 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:04:57,003 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 13:04:57,003 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:04:57,003 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:04:57,003 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 13:04:57,004 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_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:04:57,026 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:04:57,034 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:04:57,036 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:04:57,037 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:04:57,037 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:04:57,037 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-11-28 13:04:57,073 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/bin-2019/uautomizer/data/92877440e/6b1ad561b6f34d3fb6996db335f26257/FLAGcea446532 [2018-11-28 13:04:57,456 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:04:57,456 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-11-28 13:04:57,460 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/bin-2019/uautomizer/data/92877440e/6b1ad561b6f34d3fb6996db335f26257/FLAGcea446532 [2018-11-28 13:04:57,471 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/bin-2019/uautomizer/data/92877440e/6b1ad561b6f34d3fb6996db335f26257 [2018-11-28 13:04:57,473 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:04:57,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:04:57,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:04:57,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:04:57,477 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:04:57,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:04:57" (1/1) ... [2018-11-28 13:04:57,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29cc7d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:04:57, skipping insertion in model container [2018-11-28 13:04:57,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:04:57" (1/1) ... [2018-11-28 13:04:57,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:04:57,492 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:04:57,585 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:04:57,588 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:04:57,597 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:04:57,605 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:04:57,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:04:57 WrapperNode [2018-11-28 13:04:57,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:04:57,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:04:57,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:04:57,606 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:04:57,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:04:57" (1/1) ... [2018-11-28 13:04:57,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:04:57" (1/1) ... [2018-11-28 13:04:57,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:04:57,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:04:57,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:04:57,620 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:04:57,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:04:57" (1/1) ... [2018-11-28 13:04:57,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:04:57" (1/1) ... [2018-11-28 13:04:57,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:04:57" (1/1) ... [2018-11-28 13:04:57,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:04:57" (1/1) ... [2018-11-28 13:04:57,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:04:57" (1/1) ... [2018-11-28 13:04:57,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:04:57" (1/1) ... [2018-11-28 13:04:57,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:04:57" (1/1) ... [2018-11-28 13:04:57,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:04:57,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:04:57,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:04:57,634 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:04:57,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:04:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:04:57,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:04:57,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:04:57,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:04:57,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:04:57,720 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:04:57,720 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:04:57,829 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:04:57,830 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 13:04:57,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:04:57 BoogieIcfgContainer [2018-11-28 13:04:57,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:04:57,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:04:57,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:04:57,833 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:04:57,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:04:57" (1/3) ... [2018-11-28 13:04:57,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e0bb27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:04:57, skipping insertion in model container [2018-11-28 13:04:57,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:04:57" (2/3) ... [2018-11-28 13:04:57,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e0bb27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:04:57, skipping insertion in model container [2018-11-28 13:04:57,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:04:57" (3/3) ... [2018-11-28 13:04:57,836 INFO L112 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-11-28 13:04:57,845 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:04:57,851 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-28 13:04:57,866 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-28 13:04:57,891 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:04:57,891 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:04:57,891 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 13:04:57,891 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:04:57,892 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:04:57,892 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:04:57,892 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:04:57,892 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:04:57,892 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:04:57,907 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-28 13:04:57,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-28 13:04:57,912 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:04:57,912 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:04:57,914 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:04:57,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:04:57,919 INFO L82 PathProgramCache]: Analyzing trace with hash -623924281, now seen corresponding path program 1 times [2018-11-28 13:04:57,921 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:04:57,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:04:57,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:57,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:04:57,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:58,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:58,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:04:58,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:04:58,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:04:58,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:04:58,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:04:58,036 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-11-28 13:04:58,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:04:58,092 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2018-11-28 13:04:58,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:04:58,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-28 13:04:58,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:04:58,102 INFO L225 Difference]: With dead ends: 41 [2018-11-28 13:04:58,102 INFO L226 Difference]: Without dead ends: 29 [2018-11-28 13:04:58,105 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 [2018-11-28 13:04:58,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-28 13:04:58,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2018-11-28 13:04:58,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 13:04:58,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2018-11-28 13:04:58,131 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 8 [2018-11-28 13:04:58,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:04:58,132 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2018-11-28 13:04:58,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:04:58,132 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2018-11-28 13:04:58,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 13:04:58,132 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:04:58,132 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:04:58,133 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:04:58,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:04:58,133 INFO L82 PathProgramCache]: Analyzing trace with hash 2133183819, now seen corresponding path program 1 times [2018-11-28 13:04:58,133 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:04:58,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:04:58,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:04:58,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:58,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:58,152 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:04:58,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:04:58,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:04:58,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:04:58,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:04:58,154 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 3 states. [2018-11-28 13:04:58,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:04:58,171 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2018-11-28 13:04:58,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:04:58,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-28 13:04:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:04:58,172 INFO L225 Difference]: With dead ends: 32 [2018-11-28 13:04:58,172 INFO L226 Difference]: Without dead ends: 30 [2018-11-28 13:04:58,173 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 [2018-11-28 13:04:58,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-28 13:04:58,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2018-11-28 13:04:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 13:04:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-11-28 13:04:58,177 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 9 [2018-11-28 13:04:58,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:04:58,177 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-11-28 13:04:58,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:04:58,177 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-11-28 13:04:58,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 13:04:58,177 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:04:58,177 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:04:58,177 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:04:58,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:04:58,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1704189008, now seen corresponding path program 1 times [2018-11-28 13:04:58,178 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:04:58,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:04:58,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:04:58,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:58,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:58,206 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:04:58,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:04:58,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:04:58,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:04:58,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:04:58,207 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 3 states. [2018-11-28 13:04:58,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:04:58,237 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-11-28 13:04:58,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:04:58,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 13:04:58,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:04:58,238 INFO L225 Difference]: With dead ends: 42 [2018-11-28 13:04:58,239 INFO L226 Difference]: Without dead ends: 23 [2018-11-28 13:04:58,239 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 [2018-11-28 13:04:58,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-28 13:04:58,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-11-28 13:04:58,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-28 13:04:58,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-11-28 13:04:58,242 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2018-11-28 13:04:58,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:04:58,242 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-11-28 13:04:58,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:04:58,242 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-11-28 13:04:58,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 13:04:58,243 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:04:58,243 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:04:58,243 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:04:58,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:04:58,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1290251757, now seen corresponding path program 1 times [2018-11-28 13:04:58,243 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:04:58,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:04:58,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:04:58,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:58,258 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:04:58,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:04:58,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:04:58,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:04:58,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:04:58,259 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 3 states. [2018-11-28 13:04:58,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:04:58,267 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-11-28 13:04:58,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:04:58,267 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-28 13:04:58,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:04:58,268 INFO L225 Difference]: With dead ends: 22 [2018-11-28 13:04:58,268 INFO L226 Difference]: Without dead ends: 21 [2018-11-28 13:04:58,268 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 [2018-11-28 13:04:58,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-28 13:04:58,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-28 13:04:58,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-28 13:04:58,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-11-28 13:04:58,271 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2018-11-28 13:04:58,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:04:58,271 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-11-28 13:04:58,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:04:58,271 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-11-28 13:04:58,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 13:04:58,272 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:04:58,272 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:04:58,272 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:04:58,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:04:58,272 INFO L82 PathProgramCache]: Analyzing trace with hash -2067163616, now seen corresponding path program 1 times [2018-11-28 13:04:58,272 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:04:58,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:04:58,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:04:58,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:58,298 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:04:58,298 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:04:58,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:04:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:58,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:04:58,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:58,362 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:04:58,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-11-28 13:04:58,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:04:58,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:04:58,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:04:58,363 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 4 states. [2018-11-28 13:04:58,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:04:58,397 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2018-11-28 13:04:58,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:04:58,397 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-28 13:04:58,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:04:58,398 INFO L225 Difference]: With dead ends: 41 [2018-11-28 13:04:58,398 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 13:04:58,398 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 [2018-11-28 13:04:58,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 13:04:58,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-11-28 13:04:58,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 13:04:58,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-11-28 13:04:58,402 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 14 [2018-11-28 13:04:58,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:04:58,403 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-11-28 13:04:58,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:04:58,403 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-11-28 13:04:58,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 13:04:58,403 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:04:58,403 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:04:58,404 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:04:58,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:04:58,404 INFO L82 PathProgramCache]: Analyzing trace with hash 2025624681, now seen corresponding path program 1 times [2018-11-28 13:04:58,404 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:04:58,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:04:58,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:04:58,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:58,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 13:04:58,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:04:58,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:04:58,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:04:58,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:04:58,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:04:58,428 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 3 states. [2018-11-28 13:04:58,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:04:58,439 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2018-11-28 13:04:58,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:04:58,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-11-28 13:04:58,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:04:58,440 INFO L225 Difference]: With dead ends: 37 [2018-11-28 13:04:58,440 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 13:04:58,441 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 [2018-11-28 13:04:58,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 13:04:58,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2018-11-28 13:04:58,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-28 13:04:58,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-11-28 13:04:58,444 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 16 [2018-11-28 13:04:58,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:04:58,444 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-11-28 13:04:58,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:04:58,444 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2018-11-28 13:04:58,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 13:04:58,445 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:04:58,445 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:04:58,445 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:04:58,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:04:58,446 INFO L82 PathProgramCache]: Analyzing trace with hash 2025809379, now seen corresponding path program 1 times [2018-11-28 13:04:58,446 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:04:58,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:04:58,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:04:58,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:58,471 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:04:58,471 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:04:58,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:04:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:58,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:04:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:58,536 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:04:58,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-11-28 13:04:58,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:04:58,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:04:58,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:04:58,537 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 6 states. [2018-11-28 13:04:58,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:04:58,561 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2018-11-28 13:04:58,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:04:58,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-11-28 13:04:58,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:04:58,562 INFO L225 Difference]: With dead ends: 64 [2018-11-28 13:04:58,562 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 13:04:58,563 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 [2018-11-28 13:04:58,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 13:04:58,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2018-11-28 13:04:58,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 13:04:58,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-11-28 13:04:58,565 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 16 [2018-11-28 13:04:58,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:04:58,565 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-11-28 13:04:58,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:04:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-11-28 13:04:58,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 13:04:58,566 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:04:58,566 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 13:04:58,566 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:04:58,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:04:58,566 INFO L82 PathProgramCache]: Analyzing trace with hash -432629319, now seen corresponding path program 2 times [2018-11-28 13:04:58,566 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:04:58,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:04:58,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:04:58,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:58,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:04:58,614 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:04:58,623 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:04:58,633 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:04:58,634 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:04:58,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:04:58,639 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:58,654 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:04:58,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-28 13:04:58,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 13:04:58,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:04:58,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:04:58,655 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2018-11-28 13:04:58,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:04:58,678 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-11-28 13:04:58,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:04:58,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-11-28 13:04:58,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:04:58,679 INFO L225 Difference]: With dead ends: 40 [2018-11-28 13:04:58,680 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 13:04:58,680 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 [2018-11-28 13:04:58,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 13:04:58,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2018-11-28 13:04:58,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 13:04:58,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-11-28 13:04:58,684 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 20 [2018-11-28 13:04:58,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:04:58,684 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-11-28 13:04:58,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 13:04:58,684 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-11-28 13:04:58,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 13:04:58,685 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:04:58,685 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-28 13:04:58,687 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:04:58,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:04:58,688 INFO L82 PathProgramCache]: Analyzing trace with hash 305055378, now seen corresponding path program 3 times [2018-11-28 13:04:58,688 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:04:58,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:04:58,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,689 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:04:58,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:58,721 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:04:58,721 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:04:58,728 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:04:58,734 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 13:04:58,735 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:04:58,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:04:58,739 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:58,758 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:04:58,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-28 13:04:58,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:04:58,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:04:58,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:04:58,759 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 6 states. [2018-11-28 13:04:58,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:04:58,801 INFO L93 Difference]: Finished difference Result 88 states and 105 transitions. [2018-11-28 13:04:58,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:04:58,801 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-11-28 13:04:58,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:04:58,802 INFO L225 Difference]: With dead ends: 88 [2018-11-28 13:04:58,802 INFO L226 Difference]: Without dead ends: 86 [2018-11-28 13:04:58,802 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 [2018-11-28 13:04:58,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-11-28 13:04:58,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2018-11-28 13:04:58,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-11-28 13:04:58,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2018-11-28 13:04:58,807 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 26 [2018-11-28 13:04:58,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:04:58,808 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2018-11-28 13:04:58,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:04:58,808 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2018-11-28 13:04:58,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 13:04:58,808 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:04:58,808 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2018-11-28 13:04:58,809 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:04:58,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:04:58,809 INFO L82 PathProgramCache]: Analyzing trace with hash -847369045, now seen corresponding path program 4 times [2018-11-28 13:04:58,809 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:04:58,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:04:58,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:04:58,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:58,859 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:58,859 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:04:58,859 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:04:58,871 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:04:58,881 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:04:58,881 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:04:58,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:04:58,888 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:58,903 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:04:58,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-28 13:04:58,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 13:04:58,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 13:04:58,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 13:04:58,904 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand 7 states. [2018-11-28 13:04:58,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:04:58,953 INFO L93 Difference]: Finished difference Result 148 states and 178 transitions. [2018-11-28 13:04:58,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 13:04:58,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2018-11-28 13:04:58,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:04:58,956 INFO L225 Difference]: With dead ends: 148 [2018-11-28 13:04:58,956 INFO L226 Difference]: Without dead ends: 146 [2018-11-28 13:04:58,957 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 [2018-11-28 13:04:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-11-28 13:04:58,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 95. [2018-11-28 13:04:58,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-11-28 13:04:58,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2018-11-28 13:04:58,967 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 32 [2018-11-28 13:04:58,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:04:58,967 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2018-11-28 13:04:58,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 13:04:58,967 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2018-11-28 13:04:58,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-28 13:04:58,968 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:04:58,968 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 13:04:58,968 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:04:58,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:04:58,969 INFO L82 PathProgramCache]: Analyzing trace with hash 155374504, now seen corresponding path program 2 times [2018-11-28 13:04:58,969 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:04:58,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:04:58,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,970 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:04:58,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:59,008 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 13:04:59,009 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:04:59,009 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:04:59,019 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:04:59,033 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:04:59,034 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:04:59,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:04:59,042 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 13:04:59,059 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:04:59,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-28 13:04:59,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:04:59,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:04:59,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:04:59,060 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 6 states. [2018-11-28 13:04:59,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:04:59,106 INFO L93 Difference]: Finished difference Result 181 states and 210 transitions. [2018-11-28 13:04:59,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:04:59,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2018-11-28 13:04:59,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:04:59,110 INFO L225 Difference]: With dead ends: 181 [2018-11-28 13:04:59,110 INFO L226 Difference]: Without dead ends: 105 [2018-11-28 13:04:59,111 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 [2018-11-28 13:04:59,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-11-28 13:04:59,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2018-11-28 13:04:59,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-11-28 13:04:59,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2018-11-28 13:04:59,120 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 34 [2018-11-28 13:04:59,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:04:59,120 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2018-11-28 13:04:59,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:04:59,120 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2018-11-28 13:04:59,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-28 13:04:59,121 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:04:59,121 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-11-28 13:04:59,123 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:04:59,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:04:59,123 INFO L82 PathProgramCache]: Analyzing trace with hash 2007292932, now seen corresponding path program 5 times [2018-11-28 13:04:59,124 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:04:59,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:04:59,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:59,125 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:04:59,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:59,182 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:59,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:04:59,182 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:04:59,205 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:04:59,215 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-28 13:04:59,215 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:04:59,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:04:59,223 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:59,239 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:04:59,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-28 13:04:59,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 13:04:59,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 13:04:59,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:04:59,240 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand 8 states. [2018-11-28 13:04:59,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:04:59,300 INFO L93 Difference]: Finished difference Result 185 states and 223 transitions. [2018-11-28 13:04:59,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 13:04:59,301 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2018-11-28 13:04:59,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:04:59,302 INFO L225 Difference]: With dead ends: 185 [2018-11-28 13:04:59,302 INFO L226 Difference]: Without dead ends: 183 [2018-11-28 13:04:59,302 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 [2018-11-28 13:04:59,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-11-28 13:04:59,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 116. [2018-11-28 13:04:59,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-11-28 13:04:59,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions. [2018-11-28 13:04:59,309 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 38 [2018-11-28 13:04:59,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:04:59,310 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions. [2018-11-28 13:04:59,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 13:04:59,310 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions. [2018-11-28 13:04:59,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-28 13:04:59,311 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:04:59,311 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 13:04:59,311 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:04:59,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:04:59,311 INFO L82 PathProgramCache]: Analyzing trace with hash -998567743, now seen corresponding path program 3 times [2018-11-28 13:04:59,312 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:04:59,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:04:59,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:59,313 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:04:59,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 22 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 13:04:59,349 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:04:59,349 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:04:59,355 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:04:59,361 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 13:04:59,361 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:04:59,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:04:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 37 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-28 13:04:59,409 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:04:59,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 10 [2018-11-28 13:04:59,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 13:04:59,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 13:04:59,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 13:04:59,410 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand 10 states. [2018-11-28 13:04:59,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:04:59,439 INFO L93 Difference]: Finished difference Result 156 states and 179 transitions. [2018-11-28 13:04:59,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 13:04:59,439 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2018-11-28 13:04:59,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:04:59,439 INFO L225 Difference]: With dead ends: 156 [2018-11-28 13:04:59,440 INFO L226 Difference]: Without dead ends: 65 [2018-11-28 13:04:59,440 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 [2018-11-28 13:04:59,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-28 13:04:59,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2018-11-28 13:04:59,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-28 13:04:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2018-11-28 13:04:59,444 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 40 [2018-11-28 13:04:59,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:04:59,444 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2018-11-28 13:04:59,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 13:04:59,444 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2018-11-28 13:04:59,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-28 13:04:59,445 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:04:59,445 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-28 13:04:59,445 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:04:59,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:04:59,446 INFO L82 PathProgramCache]: Analyzing trace with hash 869721245, now seen corresponding path program 6 times [2018-11-28 13:04:59,446 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:04:59,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:04:59,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:59,446 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:04:59,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:59,510 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:04:59,510 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:04:59,524 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:04:59,534 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-28 13:04:59,535 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:04:59,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:04:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:59,559 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:04:59,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-28 13:04:59,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 13:04:59,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 13:04:59,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:04:59,560 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand 9 states. [2018-11-28 13:04:59,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:04:59,607 INFO L93 Difference]: Finished difference Result 188 states and 232 transitions. [2018-11-28 13:04:59,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 13:04:59,607 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2018-11-28 13:04:59,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:04:59,608 INFO L225 Difference]: With dead ends: 188 [2018-11-28 13:04:59,608 INFO L226 Difference]: Without dead ends: 186 [2018-11-28 13:04:59,608 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 [2018-11-28 13:04:59,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-11-28 13:04:59,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 176. [2018-11-28 13:04:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-11-28 13:04:59,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 202 transitions. [2018-11-28 13:04:59,614 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 202 transitions. Word has length 44 [2018-11-28 13:04:59,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:04:59,615 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 202 transitions. [2018-11-28 13:04:59,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 13:04:59,615 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 202 transitions. [2018-11-28 13:04:59,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-28 13:04:59,615 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:04:59,615 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-28 13:04:59,616 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:04:59,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:04:59,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1375491702, now seen corresponding path program 7 times [2018-11-28 13:04:59,616 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:04:59,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:04:59,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:59,617 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:04:59,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:59,691 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:04:59,691 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:04:59,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:04:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:59,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:04:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:59,731 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:04:59,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-28 13:04:59,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 13:04:59,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 13:04:59,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 13:04:59,731 INFO L87 Difference]: Start difference. First operand 176 states and 202 transitions. Second operand 10 states. [2018-11-28 13:04:59,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:04:59,805 INFO L93 Difference]: Finished difference Result 328 states and 400 transitions. [2018-11-28 13:04:59,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 13:04:59,805 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2018-11-28 13:04:59,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:04:59,806 INFO L225 Difference]: With dead ends: 328 [2018-11-28 13:04:59,806 INFO L226 Difference]: Without dead ends: 326 [2018-11-28 13:04:59,807 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 [2018-11-28 13:04:59,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-11-28 13:04:59,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 197. [2018-11-28 13:04:59,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-11-28 13:04:59,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 227 transitions. [2018-11-28 13:04:59,815 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 227 transitions. Word has length 50 [2018-11-28 13:04:59,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:04:59,815 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 227 transitions. [2018-11-28 13:04:59,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 13:04:59,815 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 227 transitions. [2018-11-28 13:04:59,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-28 13:04:59,816 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:04:59,816 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-28 13:04:59,816 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:04:59,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:04:59,816 INFO L82 PathProgramCache]: Analyzing trace with hash -139378289, now seen corresponding path program 8 times [2018-11-28 13:04:59,817 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:04:59,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:04:59,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:59,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:04:59,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:04:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:04:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:59,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:04:59,885 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:04:59,891 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:04:59,897 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:04:59,898 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:04:59,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:04:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:04:59,922 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:04:59,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-28 13:04:59,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 13:04:59,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 13:04:59,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:04:59,923 INFO L87 Difference]: Start difference. First operand 197 states and 227 transitions. Second operand 11 states. [2018-11-28 13:04:59,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:04:59,995 INFO L93 Difference]: Finished difference Result 371 states and 454 transitions. [2018-11-28 13:04:59,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 13:04:59,996 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2018-11-28 13:04:59,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:04:59,997 INFO L225 Difference]: With dead ends: 371 [2018-11-28 13:04:59,997 INFO L226 Difference]: Without dead ends: 369 [2018-11-28 13:04:59,997 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 [2018-11-28 13:04:59,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-11-28 13:05:00,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 218. [2018-11-28 13:05:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-11-28 13:05:00,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 252 transitions. [2018-11-28 13:05:00,003 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 252 transitions. Word has length 56 [2018-11-28 13:05:00,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:00,003 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 252 transitions. [2018-11-28 13:05:00,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 13:05:00,003 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 252 transitions. [2018-11-28 13:05:00,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-28 13:05:00,004 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:00,004 INFO L402 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:00,005 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:00,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:00,005 INFO L82 PathProgramCache]: Analyzing trace with hash 583444998, now seen corresponding path program 4 times [2018-11-28 13:05:00,005 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:00,005 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:00,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:00,006 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:00,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:00,041 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 91 proven. 57 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-28 13:05:00,041 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:00,041 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:00,047 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:05:00,056 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:05:00,056 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:00,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 58 proven. 102 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-28 13:05:00,128 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:00,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2018-11-28 13:05:00,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 13:05:00,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 13:05:00,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-28 13:05:00,129 INFO L87 Difference]: Start difference. First operand 218 states and 252 transitions. Second operand 15 states. [2018-11-28 13:05:00,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:00,171 INFO L93 Difference]: Finished difference Result 519 states and 620 transitions. [2018-11-28 13:05:00,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 13:05:00,173 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2018-11-28 13:05:00,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:00,174 INFO L225 Difference]: With dead ends: 519 [2018-11-28 13:05:00,174 INFO L226 Difference]: Without dead ends: 338 [2018-11-28 13:05:00,174 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 [2018-11-28 13:05:00,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-11-28 13:05:00,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 329. [2018-11-28 13:05:00,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-11-28 13:05:00,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 381 transitions. [2018-11-28 13:05:00,185 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 381 transitions. Word has length 58 [2018-11-28 13:05:00,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:00,185 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 381 transitions. [2018-11-28 13:05:00,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 13:05:00,185 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 381 transitions. [2018-11-28 13:05:00,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-28 13:05:00,186 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:00,186 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:00,186 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:00,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:00,186 INFO L82 PathProgramCache]: Analyzing trace with hash 155563496, now seen corresponding path program 9 times [2018-11-28 13:05:00,187 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:00,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:00,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:00,188 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:00,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:00,276 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:00,276 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:00,291 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:05:00,304 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-28 13:05:00,304 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:00,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:00,316 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:00,331 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:00,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-28 13:05:00,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 13:05:00,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 13:05:00,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-28 13:05:00,332 INFO L87 Difference]: Start difference. First operand 329 states and 381 transitions. Second operand 12 states. [2018-11-28 13:05:00,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:00,409 INFO L93 Difference]: Finished difference Result 633 states and 781 transitions. [2018-11-28 13:05:00,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 13:05:00,410 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2018-11-28 13:05:00,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:00,411 INFO L225 Difference]: With dead ends: 633 [2018-11-28 13:05:00,411 INFO L226 Difference]: Without dead ends: 631 [2018-11-28 13:05:00,412 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 [2018-11-28 13:05:00,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2018-11-28 13:05:00,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 368. [2018-11-28 13:05:00,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-11-28 13:05:00,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 427 transitions. [2018-11-28 13:05:00,423 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 427 transitions. Word has length 62 [2018-11-28 13:05:00,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:00,423 INFO L480 AbstractCegarLoop]: Abstraction has 368 states and 427 transitions. [2018-11-28 13:05:00,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 13:05:00,423 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 427 transitions. [2018-11-28 13:05:00,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-28 13:05:00,424 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:00,424 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:00,424 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:00,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:00,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1388168065, now seen corresponding path program 10 times [2018-11-28 13:05:00,424 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:00,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:00,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:00,425 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:00,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:00,496 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:00,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:00,496 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:00,507 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:05:00,529 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:05:00,529 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:00,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:00,552 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:00,577 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:00,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-28 13:05:00,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 13:05:00,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 13:05:00,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-28 13:05:00,578 INFO L87 Difference]: Start difference. First operand 368 states and 427 transitions. Second operand 13 states. [2018-11-28 13:05:00,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:00,674 INFO L93 Difference]: Finished difference Result 712 states and 880 transitions. [2018-11-28 13:05:00,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 13:05:00,675 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2018-11-28 13:05:00,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:00,677 INFO L225 Difference]: With dead ends: 712 [2018-11-28 13:05:00,677 INFO L226 Difference]: Without dead ends: 710 [2018-11-28 13:05:00,678 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 [2018-11-28 13:05:00,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2018-11-28 13:05:00,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 407. [2018-11-28 13:05:00,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-11-28 13:05:00,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 473 transitions. [2018-11-28 13:05:00,693 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 473 transitions. Word has length 68 [2018-11-28 13:05:00,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:00,693 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 473 transitions. [2018-11-28 13:05:00,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 13:05:00,693 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 473 transitions. [2018-11-28 13:05:00,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-11-28 13:05:00,694 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:00,694 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:00,694 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:00,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:00,694 INFO L82 PathProgramCache]: Analyzing trace with hash -254707110, now seen corresponding path program 11 times [2018-11-28 13:05:00,695 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:00,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:00,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:00,696 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:00,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:00,786 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:00,786 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:00,792 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:05:00,809 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-11-28 13:05:00,810 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:00,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:00,834 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:00,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-11-28 13:05:00,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 13:05:00,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 13:05:00,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-28 13:05:00,835 INFO L87 Difference]: Start difference. First operand 407 states and 473 transitions. Second operand 14 states. [2018-11-28 13:05:00,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:00,919 INFO L93 Difference]: Finished difference Result 791 states and 979 transitions. [2018-11-28 13:05:00,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 13:05:00,920 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 74 [2018-11-28 13:05:00,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:00,922 INFO L225 Difference]: With dead ends: 791 [2018-11-28 13:05:00,922 INFO L226 Difference]: Without dead ends: 789 [2018-11-28 13:05:00,923 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 [2018-11-28 13:05:00,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2018-11-28 13:05:00,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 446. [2018-11-28 13:05:00,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2018-11-28 13:05:00,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 519 transitions. [2018-11-28 13:05:00,938 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 519 transitions. Word has length 74 [2018-11-28 13:05:00,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:00,938 INFO L480 AbstractCegarLoop]: Abstraction has 446 states and 519 transitions. [2018-11-28 13:05:00,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 13:05:00,938 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 519 transitions. [2018-11-28 13:05:00,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-11-28 13:05:00,939 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:00,939 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:00,939 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:00,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:00,940 INFO L82 PathProgramCache]: Analyzing trace with hash -101913997, now seen corresponding path program 12 times [2018-11-28 13:05:00,940 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:00,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:00,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:00,941 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:00,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:01,034 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:01,035 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:01,044 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:05:01,061 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-11-28 13:05:01,062 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:01,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:01,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:01,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-11-28 13:05:01,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 13:05:01,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 13:05:01,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-28 13:05:01,100 INFO L87 Difference]: Start difference. First operand 446 states and 519 transitions. Second operand 15 states. [2018-11-28 13:05:01,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:01,223 INFO L93 Difference]: Finished difference Result 870 states and 1078 transitions. [2018-11-28 13:05:01,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 13:05:01,223 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 80 [2018-11-28 13:05:01,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:01,226 INFO L225 Difference]: With dead ends: 870 [2018-11-28 13:05:01,226 INFO L226 Difference]: Without dead ends: 868 [2018-11-28 13:05:01,226 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 [2018-11-28 13:05:01,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2018-11-28 13:05:01,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 485. [2018-11-28 13:05:01,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2018-11-28 13:05:01,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 565 transitions. [2018-11-28 13:05:01,243 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 565 transitions. Word has length 80 [2018-11-28 13:05:01,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:01,243 INFO L480 AbstractCegarLoop]: Abstraction has 485 states and 565 transitions. [2018-11-28 13:05:01,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 13:05:01,243 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 565 transitions. [2018-11-28 13:05:01,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-11-28 13:05:01,244 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:01,244 INFO L402 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:01,244 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:01,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:01,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1731208140, now seen corresponding path program 13 times [2018-11-28 13:05:01,245 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:01,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:01,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:01,246 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:01,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:01,378 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:01,378 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:01,378 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:01,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:01,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:01,449 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:01,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-28 13:05:01,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-28 13:05:01,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-28 13:05:01,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-28 13:05:01,451 INFO L87 Difference]: Start difference. First operand 485 states and 565 transitions. Second operand 16 states. [2018-11-28 13:05:01,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:01,557 INFO L93 Difference]: Finished difference Result 949 states and 1177 transitions. [2018-11-28 13:05:01,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 13:05:01,560 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 86 [2018-11-28 13:05:01,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:01,563 INFO L225 Difference]: With dead ends: 949 [2018-11-28 13:05:01,565 INFO L226 Difference]: Without dead ends: 947 [2018-11-28 13:05:01,566 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-28 13:05:01,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2018-11-28 13:05:01,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 524. [2018-11-28 13:05:01,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-11-28 13:05:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 611 transitions. [2018-11-28 13:05:01,586 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 611 transitions. Word has length 86 [2018-11-28 13:05:01,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:01,587 INFO L480 AbstractCegarLoop]: Abstraction has 524 states and 611 transitions. [2018-11-28 13:05:01,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-28 13:05:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 611 transitions. [2018-11-28 13:05:01,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-11-28 13:05:01,588 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:01,588 INFO L402 BasicCegarLoop]: trace histogram [14, 13, 13, 8, 8, 8, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:01,588 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:01,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:01,589 INFO L82 PathProgramCache]: Analyzing trace with hash 694950769, now seen corresponding path program 5 times [2018-11-28 13:05:01,589 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:01,589 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:01,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:01,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:01,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 178 proven. 184 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-11-28 13:05:01,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:01,674 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:01,686 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:05:01,704 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-11-28 13:05:01,705 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:01,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:01,715 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 178 proven. 184 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-11-28 13:05:01,740 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:01,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-28 13:05:01,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 13:05:01,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 13:05:01,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:05:01,741 INFO L87 Difference]: Start difference. First operand 524 states and 611 transitions. Second operand 11 states. [2018-11-28 13:05:01,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:01,777 INFO L93 Difference]: Finished difference Result 1009 states and 1184 transitions. [2018-11-28 13:05:01,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 13:05:01,778 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2018-11-28 13:05:01,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:01,779 INFO L225 Difference]: With dead ends: 1009 [2018-11-28 13:05:01,780 INFO L226 Difference]: Without dead ends: 534 [2018-11-28 13:05:01,780 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 [2018-11-28 13:05:01,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-11-28 13:05:01,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 530. [2018-11-28 13:05:01,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-11-28 13:05:01,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 617 transitions. [2018-11-28 13:05:01,789 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 617 transitions. Word has length 88 [2018-11-28 13:05:01,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:01,790 INFO L480 AbstractCegarLoop]: Abstraction has 530 states and 617 transitions. [2018-11-28 13:05:01,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 13:05:01,790 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 617 transitions. [2018-11-28 13:05:01,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-11-28 13:05:01,791 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:01,791 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:01,791 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:01,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:01,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1030698597, now seen corresponding path program 14 times [2018-11-28 13:05:01,791 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:01,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:01,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:01,792 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:01,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:01,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:01,889 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:01,904 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:05:01,929 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:05:01,930 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:01,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:01,955 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:01,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-11-28 13:05:01,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-28 13:05:01,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-28 13:05:01,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-11-28 13:05:01,956 INFO L87 Difference]: Start difference. First operand 530 states and 617 transitions. Second operand 17 states. [2018-11-28 13:05:02,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:02,048 INFO L93 Difference]: Finished difference Result 1034 states and 1282 transitions. [2018-11-28 13:05:02,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-28 13:05:02,051 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 92 [2018-11-28 13:05:02,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:02,053 INFO L225 Difference]: With dead ends: 1034 [2018-11-28 13:05:02,053 INFO L226 Difference]: Without dead ends: 1032 [2018-11-28 13:05:02,054 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 [2018-11-28 13:05:02,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2018-11-28 13:05:02,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 569. [2018-11-28 13:05:02,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2018-11-28 13:05:02,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 663 transitions. [2018-11-28 13:05:02,065 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 663 transitions. Word has length 92 [2018-11-28 13:05:02,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:02,065 INFO L480 AbstractCegarLoop]: Abstraction has 569 states and 663 transitions. [2018-11-28 13:05:02,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-28 13:05:02,065 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 663 transitions. [2018-11-28 13:05:02,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-11-28 13:05:02,066 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:02,066 INFO L402 BasicCegarLoop]: trace histogram [15, 14, 14, 9, 9, 9, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:02,067 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:02,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:02,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1815145418, now seen corresponding path program 6 times [2018-11-28 13:05:02,067 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:02,067 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:02,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:02,068 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:02,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 199 proven. 234 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-11-28 13:05:02,128 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:02,128 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:02,139 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:05:02,155 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2018-11-28 13:05:02,155 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:02,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 245 proven. 123 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-11-28 13:05:02,268 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:02,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2018-11-28 13:05:02,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-28 13:05:02,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-28 13:05:02,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-28 13:05:02,269 INFO L87 Difference]: Start difference. First operand 569 states and 663 transitions. Second operand 20 states. [2018-11-28 13:05:02,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:02,325 INFO L93 Difference]: Finished difference Result 1218 states and 1439 transitions. [2018-11-28 13:05:02,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-28 13:05:02,325 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 94 [2018-11-28 13:05:02,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:02,327 INFO L225 Difference]: With dead ends: 1218 [2018-11-28 13:05:02,327 INFO L226 Difference]: Without dead ends: 704 [2018-11-28 13:05:02,328 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 [2018-11-28 13:05:02,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2018-11-28 13:05:02,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 689. [2018-11-28 13:05:02,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2018-11-28 13:05:02,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 802 transitions. [2018-11-28 13:05:02,339 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 802 transitions. Word has length 94 [2018-11-28 13:05:02,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:02,339 INFO L480 AbstractCegarLoop]: Abstraction has 689 states and 802 transitions. [2018-11-28 13:05:02,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-28 13:05:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 802 transitions. [2018-11-28 13:05:02,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-11-28 13:05:02,340 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:02,340 INFO L402 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:02,341 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:02,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:02,341 INFO L82 PathProgramCache]: Analyzing trace with hash -164482498, now seen corresponding path program 15 times [2018-11-28 13:05:02,341 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:02,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:02,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:02,342 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:02,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:02,445 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:02,445 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:02,445 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:02,463 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:05:02,479 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-11-28 13:05:02,479 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:02,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:02,497 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:02,512 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:02,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-11-28 13:05:02,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-28 13:05:02,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-28 13:05:02,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-28 13:05:02,513 INFO L87 Difference]: Start difference. First operand 689 states and 802 transitions. Second operand 18 states. [2018-11-28 13:05:02,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:02,616 INFO L93 Difference]: Finished difference Result 1347 states and 1672 transitions. [2018-11-28 13:05:02,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-28 13:05:02,617 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 98 [2018-11-28 13:05:02,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:02,619 INFO L225 Difference]: With dead ends: 1347 [2018-11-28 13:05:02,619 INFO L226 Difference]: Without dead ends: 1345 [2018-11-28 13:05:02,620 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 [2018-11-28 13:05:02,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2018-11-28 13:05:02,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 740. [2018-11-28 13:05:02,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2018-11-28 13:05:02,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 862 transitions. [2018-11-28 13:05:02,633 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 862 transitions. Word has length 98 [2018-11-28 13:05:02,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:02,634 INFO L480 AbstractCegarLoop]: Abstraction has 740 states and 862 transitions. [2018-11-28 13:05:02,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-28 13:05:02,634 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 862 transitions. [2018-11-28 13:05:02,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-28 13:05:02,635 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:02,635 INFO L402 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:02,635 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:02,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:02,635 INFO L82 PathProgramCache]: Analyzing trace with hash 682960727, now seen corresponding path program 16 times [2018-11-28 13:05:02,635 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:02,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:02,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:02,636 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:02,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:02,757 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:02,757 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:02,757 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:02,767 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:05:02,782 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:05:02,782 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:02,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:02,808 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:02,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-11-28 13:05:02,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-28 13:05:02,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-28 13:05:02,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-28 13:05:02,809 INFO L87 Difference]: Start difference. First operand 740 states and 862 transitions. Second operand 19 states. [2018-11-28 13:05:02,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:02,928 INFO L93 Difference]: Finished difference Result 1450 states and 1801 transitions. [2018-11-28 13:05:02,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-28 13:05:02,929 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 104 [2018-11-28 13:05:02,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:02,931 INFO L225 Difference]: With dead ends: 1450 [2018-11-28 13:05:02,931 INFO L226 Difference]: Without dead ends: 1448 [2018-11-28 13:05:02,932 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 [2018-11-28 13:05:02,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2018-11-28 13:05:02,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 791. [2018-11-28 13:05:02,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2018-11-28 13:05:02,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 922 transitions. [2018-11-28 13:05:02,946 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 922 transitions. Word has length 104 [2018-11-28 13:05:02,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:02,946 INFO L480 AbstractCegarLoop]: Abstraction has 791 states and 922 transitions. [2018-11-28 13:05:02,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-28 13:05:02,946 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 922 transitions. [2018-11-28 13:05:02,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-28 13:05:02,947 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:02,947 INFO L402 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:02,948 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:02,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:02,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1927816624, now seen corresponding path program 17 times [2018-11-28 13:05:02,948 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:02,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:02,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:02,949 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:02,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:03,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:03,080 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:03,088 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:05:03,132 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-11-28 13:05:03,132 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:03,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:03,150 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:03,176 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:03,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-11-28 13:05:03,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-28 13:05:03,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-28 13:05:03,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-28 13:05:03,177 INFO L87 Difference]: Start difference. First operand 791 states and 922 transitions. Second operand 20 states. [2018-11-28 13:05:03,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:03,328 INFO L93 Difference]: Finished difference Result 1553 states and 1930 transitions. [2018-11-28 13:05:03,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-28 13:05:03,329 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 110 [2018-11-28 13:05:03,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:03,331 INFO L225 Difference]: With dead ends: 1553 [2018-11-28 13:05:03,331 INFO L226 Difference]: Without dead ends: 1551 [2018-11-28 13:05:03,332 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 [2018-11-28 13:05:03,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2018-11-28 13:05:03,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 842. [2018-11-28 13:05:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2018-11-28 13:05:03,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 982 transitions. [2018-11-28 13:05:03,347 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 982 transitions. Word has length 110 [2018-11-28 13:05:03,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:03,347 INFO L480 AbstractCegarLoop]: Abstraction has 842 states and 982 transitions. [2018-11-28 13:05:03,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-28 13:05:03,347 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 982 transitions. [2018-11-28 13:05:03,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-28 13:05:03,348 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:03,348 INFO L402 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:03,349 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:03,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:03,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1569768119, now seen corresponding path program 18 times [2018-11-28 13:05:03,349 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:03,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:03,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:03,350 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:03,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:03,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:03,518 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:03,526 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:05:03,546 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-11-28 13:05:03,547 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:03,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:03,575 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:03,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-11-28 13:05:03,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-28 13:05:03,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-28 13:05:03,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-11-28 13:05:03,576 INFO L87 Difference]: Start difference. First operand 842 states and 982 transitions. Second operand 21 states. [2018-11-28 13:05:03,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:03,690 INFO L93 Difference]: Finished difference Result 1656 states and 2059 transitions. [2018-11-28 13:05:03,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-28 13:05:03,691 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 116 [2018-11-28 13:05:03,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:03,694 INFO L225 Difference]: With dead ends: 1656 [2018-11-28 13:05:03,694 INFO L226 Difference]: Without dead ends: 1654 [2018-11-28 13:05:03,695 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 [2018-11-28 13:05:03,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2018-11-28 13:05:03,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 893. [2018-11-28 13:05:03,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2018-11-28 13:05:03,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1042 transitions. [2018-11-28 13:05:03,719 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1042 transitions. Word has length 116 [2018-11-28 13:05:03,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:03,719 INFO L480 AbstractCegarLoop]: Abstraction has 893 states and 1042 transitions. [2018-11-28 13:05:03,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-28 13:05:03,719 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1042 transitions. [2018-11-28 13:05:03,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-28 13:05:03,720 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:03,721 INFO L402 BasicCegarLoop]: trace histogram [19, 18, 18, 11, 11, 11, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:03,721 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:03,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:03,721 INFO L82 PathProgramCache]: Analyzing trace with hash 605044514, now seen corresponding path program 7 times [2018-11-28 13:05:03,721 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:03,721 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:03,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:03,722 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:03,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:03,827 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 333 proven. 352 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-11-28 13:05:03,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:03,827 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:03,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:03,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 333 proven. 352 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-11-28 13:05:03,872 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:03,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-11-28 13:05:03,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 13:05:03,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 13:05:03,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-28 13:05:03,873 INFO L87 Difference]: Start difference. First operand 893 states and 1042 transitions. Second operand 14 states. [2018-11-28 13:05:03,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:03,917 INFO L93 Difference]: Finished difference Result 1729 states and 2028 transitions. [2018-11-28 13:05:03,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 13:05:03,918 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 118 [2018-11-28 13:05:03,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:03,920 INFO L225 Difference]: With dead ends: 1729 [2018-11-28 13:05:03,920 INFO L226 Difference]: Without dead ends: 903 [2018-11-28 13:05:03,921 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 [2018-11-28 13:05:03,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2018-11-28 13:05:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 899. [2018-11-28 13:05:03,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2018-11-28 13:05:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1048 transitions. [2018-11-28 13:05:03,933 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1048 transitions. Word has length 118 [2018-11-28 13:05:03,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:03,934 INFO L480 AbstractCegarLoop]: Abstraction has 899 states and 1048 transitions. [2018-11-28 13:05:03,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 13:05:03,934 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1048 transitions. [2018-11-28 13:05:03,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-28 13:05:03,935 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:03,935 INFO L402 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:03,935 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:03,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:03,935 INFO L82 PathProgramCache]: Analyzing trace with hash 497188386, now seen corresponding path program 19 times [2018-11-28 13:05:03,936 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:03,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:03,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:03,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:03,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:04,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:04,091 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:04,091 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:04,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:04,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:04,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:04,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-11-28 13:05:04,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-28 13:05:04,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-28 13:05:04,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-28 13:05:04,165 INFO L87 Difference]: Start difference. First operand 899 states and 1048 transitions. Second operand 22 states. [2018-11-28 13:05:04,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:04,289 INFO L93 Difference]: Finished difference Result 1765 states and 2194 transitions. [2018-11-28 13:05:04,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-28 13:05:04,289 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 122 [2018-11-28 13:05:04,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:04,291 INFO L225 Difference]: With dead ends: 1765 [2018-11-28 13:05:04,291 INFO L226 Difference]: Without dead ends: 1763 [2018-11-28 13:05:04,292 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 [2018-11-28 13:05:04,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2018-11-28 13:05:04,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 950. [2018-11-28 13:05:04,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2018-11-28 13:05:04,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1108 transitions. [2018-11-28 13:05:04,311 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1108 transitions. Word has length 122 [2018-11-28 13:05:04,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:04,311 INFO L480 AbstractCegarLoop]: Abstraction has 950 states and 1108 transitions. [2018-11-28 13:05:04,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-28 13:05:04,312 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1108 transitions. [2018-11-28 13:05:04,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-28 13:05:04,313 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:04,313 INFO L402 BasicCegarLoop]: trace histogram [20, 19, 19, 12, 12, 12, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:04,314 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:04,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:04,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1619612229, now seen corresponding path program 8 times [2018-11-28 13:05:04,314 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:04,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:04,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:04,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:04,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 362 proven. 420 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-11-28 13:05:04,413 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:04,413 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:04,422 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:05:04,435 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:05:04,435 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:04,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 362 proven. 420 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-11-28 13:05:04,468 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:04,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-28 13:05:04,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 13:05:04,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 13:05:04,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-28 13:05:04,468 INFO L87 Difference]: Start difference. First operand 950 states and 1108 transitions. Second operand 15 states. [2018-11-28 13:05:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:04,506 INFO L93 Difference]: Finished difference Result 1837 states and 2154 transitions. [2018-11-28 13:05:04,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 13:05:04,507 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 124 [2018-11-28 13:05:04,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:04,509 INFO L225 Difference]: With dead ends: 1837 [2018-11-28 13:05:04,509 INFO L226 Difference]: Without dead ends: 960 [2018-11-28 13:05:04,510 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 [2018-11-28 13:05:04,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2018-11-28 13:05:04,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 956. [2018-11-28 13:05:04,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2018-11-28 13:05:04,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1114 transitions. [2018-11-28 13:05:04,528 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1114 transitions. Word has length 124 [2018-11-28 13:05:04,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:04,528 INFO L480 AbstractCegarLoop]: Abstraction has 956 states and 1114 transitions. [2018-11-28 13:05:04,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 13:05:04,528 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1114 transitions. [2018-11-28 13:05:04,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-28 13:05:04,530 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:04,530 INFO L402 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:04,530 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:04,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:04,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1936852933, now seen corresponding path program 20 times [2018-11-28 13:05:04,530 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:04,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:04,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:04,531 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:04,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:04,702 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:04,702 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:04,710 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:05:04,724 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:05:04,724 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:04,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:04,752 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:04,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-11-28 13:05:04,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-28 13:05:04,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-28 13:05:04,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-11-28 13:05:04,753 INFO L87 Difference]: Start difference. First operand 956 states and 1114 transitions. Second operand 23 states. [2018-11-28 13:05:04,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:04,877 INFO L93 Difference]: Finished difference Result 1874 states and 2329 transitions. [2018-11-28 13:05:04,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-28 13:05:04,882 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 128 [2018-11-28 13:05:04,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:04,886 INFO L225 Difference]: With dead ends: 1874 [2018-11-28 13:05:04,886 INFO L226 Difference]: Without dead ends: 1872 [2018-11-28 13:05:04,887 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 [2018-11-28 13:05:04,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2018-11-28 13:05:04,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1007. [2018-11-28 13:05:04,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1007 states. [2018-11-28 13:05:04,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1174 transitions. [2018-11-28 13:05:04,909 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1174 transitions. Word has length 128 [2018-11-28 13:05:04,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:04,910 INFO L480 AbstractCegarLoop]: Abstraction has 1007 states and 1174 transitions. [2018-11-28 13:05:04,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-28 13:05:04,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1174 transitions. [2018-11-28 13:05:04,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-28 13:05:04,911 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:04,911 INFO L402 BasicCegarLoop]: trace histogram [21, 20, 20, 13, 13, 13, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:04,911 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:04,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:04,911 INFO L82 PathProgramCache]: Analyzing trace with hash 23856532, now seen corresponding path program 9 times [2018-11-28 13:05:04,911 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:04,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:04,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:04,912 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:04,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:05,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 391 proven. 494 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-11-28 13:05:05,045 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:05,045 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:05,051 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:05:05,090 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-28 13:05:05,090 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:05,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 436 proven. 176 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-11-28 13:05:05,208 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:05,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 25 [2018-11-28 13:05:05,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-28 13:05:05,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-28 13:05:05,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-11-28 13:05:05,209 INFO L87 Difference]: Start difference. First operand 1007 states and 1174 transitions. Second operand 25 states. [2018-11-28 13:05:05,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:05,277 INFO L93 Difference]: Finished difference Result 2049 states and 2405 transitions. [2018-11-28 13:05:05,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-28 13:05:05,279 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 130 [2018-11-28 13:05:05,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:05,281 INFO L225 Difference]: With dead ends: 2049 [2018-11-28 13:05:05,282 INFO L226 Difference]: Without dead ends: 1121 [2018-11-28 13:05:05,283 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 [2018-11-28 13:05:05,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2018-11-28 13:05:05,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1100. [2018-11-28 13:05:05,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1100 states. [2018-11-28 13:05:05,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1281 transitions. [2018-11-28 13:05:05,309 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1281 transitions. Word has length 130 [2018-11-28 13:05:05,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:05,309 INFO L480 AbstractCegarLoop]: Abstraction has 1100 states and 1281 transitions. [2018-11-28 13:05:05,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-28 13:05:05,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1281 transitions. [2018-11-28 13:05:05,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-28 13:05:05,310 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:05,310 INFO L402 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:05,311 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:05,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:05,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1041122412, now seen corresponding path program 21 times [2018-11-28 13:05:05,311 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:05,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:05,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:05,312 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:05,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:05,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:05,599 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:05,612 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:05:05,643 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-11-28 13:05:05,643 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:05,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:05,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:05,689 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:05,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-11-28 13:05:05,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-28 13:05:05,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-28 13:05:05,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-11-28 13:05:05,690 INFO L87 Difference]: Start difference. First operand 1100 states and 1281 transitions. Second operand 24 states. [2018-11-28 13:05:05,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:05,876 INFO L93 Difference]: Finished difference Result 2154 states and 2677 transitions. [2018-11-28 13:05:05,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-28 13:05:05,878 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 134 [2018-11-28 13:05:05,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:05,882 INFO L225 Difference]: With dead ends: 2154 [2018-11-28 13:05:05,883 INFO L226 Difference]: Without dead ends: 2152 [2018-11-28 13:05:05,883 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-11-28 13:05:05,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2018-11-28 13:05:05,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1157. [2018-11-28 13:05:05,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-11-28 13:05:05,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1348 transitions. [2018-11-28 13:05:05,909 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1348 transitions. Word has length 134 [2018-11-28 13:05:05,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:05,909 INFO L480 AbstractCegarLoop]: Abstraction has 1157 states and 1348 transitions. [2018-11-28 13:05:05,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-28 13:05:05,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1348 transitions. [2018-11-28 13:05:05,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-28 13:05:05,911 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:05,911 INFO L402 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:05,911 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:05,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:05,911 INFO L82 PathProgramCache]: Analyzing trace with hash -465446867, now seen corresponding path program 22 times [2018-11-28 13:05:05,911 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:05,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:05,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:05,912 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:05,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:06,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:06,171 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:06,171 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:06,180 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:05:06,200 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:05:06,201 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:06,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:06,239 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:06,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-11-28 13:05:06,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-28 13:05:06,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-28 13:05:06,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-11-28 13:05:06,240 INFO L87 Difference]: Start difference. First operand 1157 states and 1348 transitions. Second operand 25 states. [2018-11-28 13:05:06,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:06,399 INFO L93 Difference]: Finished difference Result 2269 states and 2821 transitions. [2018-11-28 13:05:06,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-28 13:05:06,399 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 140 [2018-11-28 13:05:06,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:06,403 INFO L225 Difference]: With dead ends: 2269 [2018-11-28 13:05:06,403 INFO L226 Difference]: Without dead ends: 2267 [2018-11-28 13:05:06,404 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-11-28 13:05:06,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2018-11-28 13:05:06,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1214. [2018-11-28 13:05:06,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1214 states. [2018-11-28 13:05:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1415 transitions. [2018-11-28 13:05:06,422 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1415 transitions. Word has length 140 [2018-11-28 13:05:06,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:06,422 INFO L480 AbstractCegarLoop]: Abstraction has 1214 states and 1415 transitions. [2018-11-28 13:05:06,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-28 13:05:06,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1415 transitions. [2018-11-28 13:05:06,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-28 13:05:06,424 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:06,424 INFO L402 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:06,424 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:06,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:06,424 INFO L82 PathProgramCache]: Analyzing trace with hash -693740026, now seen corresponding path program 23 times [2018-11-28 13:05:06,424 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:06,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:06,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:06,425 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:06,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:06,641 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:06,641 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:06,650 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:05:06,708 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-11-28 13:05:06,709 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:06,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:06,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:06,738 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:06,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-11-28 13:05:06,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-28 13:05:06,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-28 13:05:06,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-11-28 13:05:06,739 INFO L87 Difference]: Start difference. First operand 1214 states and 1415 transitions. Second operand 26 states. [2018-11-28 13:05:06,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:06,919 INFO L93 Difference]: Finished difference Result 2384 states and 2965 transitions. [2018-11-28 13:05:06,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-28 13:05:06,920 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 146 [2018-11-28 13:05:06,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:06,923 INFO L225 Difference]: With dead ends: 2384 [2018-11-28 13:05:06,923 INFO L226 Difference]: Without dead ends: 2382 [2018-11-28 13:05:06,924 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 [2018-11-28 13:05:06,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2018-11-28 13:05:06,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 1271. [2018-11-28 13:05:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2018-11-28 13:05:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1482 transitions. [2018-11-28 13:05:06,953 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1482 transitions. Word has length 146 [2018-11-28 13:05:06,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:06,953 INFO L480 AbstractCegarLoop]: Abstraction has 1271 states and 1482 transitions. [2018-11-28 13:05:06,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-28 13:05:06,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1482 transitions. [2018-11-28 13:05:06,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-11-28 13:05:06,955 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:06,955 INFO L402 BasicCegarLoop]: trace histogram [24, 23, 23, 15, 15, 15, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:06,955 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:06,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:06,955 INFO L82 PathProgramCache]: Analyzing trace with hash 2035440153, now seen corresponding path program 10 times [2018-11-28 13:05:06,956 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:06,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:06,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:06,956 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:06,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1363 backedges. 511 proven. 660 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-11-28 13:05:07,106 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:07,107 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:07,113 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:05:07,128 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:05:07,128 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:07,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1363 backedges. 511 proven. 660 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-11-28 13:05:07,159 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:07,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-11-28 13:05:07,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-28 13:05:07,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-28 13:05:07,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-28 13:05:07,160 INFO L87 Difference]: Start difference. First operand 1271 states and 1482 transitions. Second operand 18 states. [2018-11-28 13:05:07,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:07,209 INFO L93 Difference]: Finished difference Result 2461 states and 2884 transitions. [2018-11-28 13:05:07,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-28 13:05:07,210 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 148 [2018-11-28 13:05:07,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:07,212 INFO L225 Difference]: With dead ends: 2461 [2018-11-28 13:05:07,213 INFO L226 Difference]: Without dead ends: 1281 [2018-11-28 13:05:07,214 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-28 13:05:07,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2018-11-28 13:05:07,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1277. [2018-11-28 13:05:07,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1277 states. [2018-11-28 13:05:07,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1488 transitions. [2018-11-28 13:05:07,228 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1488 transitions. Word has length 148 [2018-11-28 13:05:07,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:07,229 INFO L480 AbstractCegarLoop]: Abstraction has 1277 states and 1488 transitions. [2018-11-28 13:05:07,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-28 13:05:07,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1488 transitions. [2018-11-28 13:05:07,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-11-28 13:05:07,230 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:07,230 INFO L402 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:07,230 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:07,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:07,231 INFO L82 PathProgramCache]: Analyzing trace with hash -503620321, now seen corresponding path program 24 times [2018-11-28 13:05:07,231 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:07,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:07,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:07,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:07,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:07,463 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:07,463 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:07,471 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:05:07,503 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-11-28 13:05:07,503 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:07,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:07,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:07,557 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:07,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-11-28 13:05:07,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-28 13:05:07,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-28 13:05:07,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-11-28 13:05:07,558 INFO L87 Difference]: Start difference. First operand 1277 states and 1488 transitions. Second operand 27 states. [2018-11-28 13:05:07,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:07,700 INFO L93 Difference]: Finished difference Result 2505 states and 3115 transitions. [2018-11-28 13:05:07,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-28 13:05:07,700 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 152 [2018-11-28 13:05:07,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:07,703 INFO L225 Difference]: With dead ends: 2505 [2018-11-28 13:05:07,703 INFO L226 Difference]: Without dead ends: 2503 [2018-11-28 13:05:07,704 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 [2018-11-28 13:05:07,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2018-11-28 13:05:07,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 1334. [2018-11-28 13:05:07,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1334 states. [2018-11-28 13:05:07,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1555 transitions. [2018-11-28 13:05:07,732 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1555 transitions. Word has length 152 [2018-11-28 13:05:07,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:07,732 INFO L480 AbstractCegarLoop]: Abstraction has 1334 states and 1555 transitions. [2018-11-28 13:05:07,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-28 13:05:07,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1555 transitions. [2018-11-28 13:05:07,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-11-28 13:05:07,734 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:07,734 INFO L402 BasicCegarLoop]: trace histogram [25, 24, 24, 16, 16, 16, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:07,734 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:07,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:07,734 INFO L82 PathProgramCache]: Analyzing trace with hash 56882930, now seen corresponding path program 11 times [2018-11-28 13:05:07,734 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:07,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:07,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:07,735 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:07,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:07,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 544 proven. 752 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-11-28 13:05:07,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:07,891 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:07,897 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:05:07,917 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-11-28 13:05:07,918 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:07,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 544 proven. 752 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-11-28 13:05:07,949 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:07,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-11-28 13:05:07,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-28 13:05:07,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-28 13:05:07,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-28 13:05:07,950 INFO L87 Difference]: Start difference. First operand 1334 states and 1555 transitions. Second operand 19 states. [2018-11-28 13:05:08,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:08,000 INFO L93 Difference]: Finished difference Result 2581 states and 3024 transitions. [2018-11-28 13:05:08,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-28 13:05:08,000 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2018-11-28 13:05:08,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:08,003 INFO L225 Difference]: With dead ends: 2581 [2018-11-28 13:05:08,003 INFO L226 Difference]: Without dead ends: 1344 [2018-11-28 13:05:08,005 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-28 13:05:08,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2018-11-28 13:05:08,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1340. [2018-11-28 13:05:08,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2018-11-28 13:05:08,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1561 transitions. [2018-11-28 13:05:08,026 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1561 transitions. Word has length 154 [2018-11-28 13:05:08,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:08,026 INFO L480 AbstractCegarLoop]: Abstraction has 1340 states and 1561 transitions. [2018-11-28 13:05:08,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-28 13:05:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1561 transitions. [2018-11-28 13:05:08,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-28 13:05:08,027 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:08,028 INFO L402 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:08,028 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:08,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:08,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1647254152, now seen corresponding path program 25 times [2018-11-28 13:05:08,028 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:08,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:08,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:08,029 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:08,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:08,332 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:08,332 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:08,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:08,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:08,387 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:08,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-11-28 13:05:08,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-28 13:05:08,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-28 13:05:08,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-11-28 13:05:08,388 INFO L87 Difference]: Start difference. First operand 1340 states and 1561 transitions. Second operand 28 states. [2018-11-28 13:05:08,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:08,590 INFO L93 Difference]: Finished difference Result 2626 states and 3265 transitions. [2018-11-28 13:05:08,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-28 13:05:08,591 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 158 [2018-11-28 13:05:08,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:08,595 INFO L225 Difference]: With dead ends: 2626 [2018-11-28 13:05:08,595 INFO L226 Difference]: Without dead ends: 2624 [2018-11-28 13:05:08,596 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-11-28 13:05:08,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2018-11-28 13:05:08,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 1397. [2018-11-28 13:05:08,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1397 states. [2018-11-28 13:05:08,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1628 transitions. [2018-11-28 13:05:08,640 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1628 transitions. Word has length 158 [2018-11-28 13:05:08,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:08,641 INFO L480 AbstractCegarLoop]: Abstraction has 1397 states and 1628 transitions. [2018-11-28 13:05:08,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-28 13:05:08,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1628 transitions. [2018-11-28 13:05:08,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-11-28 13:05:08,642 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:08,642 INFO L402 BasicCegarLoop]: trace histogram [26, 25, 25, 17, 17, 17, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:08,642 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:08,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:08,643 INFO L82 PathProgramCache]: Analyzing trace with hash 536399115, now seen corresponding path program 12 times [2018-11-28 13:05:08,643 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:08,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:08,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:08,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:08,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1619 backedges. 577 proven. 850 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-11-28 13:05:08,831 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:08,831 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:08,841 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:05:08,887 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-11-28 13:05:08,887 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:08,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:09,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1619 backedges. 695 proven. 264 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-11-28 13:05:09,149 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:09,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12] total 31 [2018-11-28 13:05:09,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-28 13:05:09,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-28 13:05:09,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-11-28 13:05:09,150 INFO L87 Difference]: Start difference. First operand 1397 states and 1628 transitions. Second operand 31 states. [2018-11-28 13:05:09,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:09,265 INFO L93 Difference]: Finished difference Result 2933 states and 3457 transitions. [2018-11-28 13:05:09,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-28 13:05:09,266 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 160 [2018-11-28 13:05:09,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:09,268 INFO L225 Difference]: With dead ends: 2933 [2018-11-28 13:05:09,268 INFO L226 Difference]: Without dead ends: 1639 [2018-11-28 13:05:09,270 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-11-28 13:05:09,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2018-11-28 13:05:09,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1613. [2018-11-28 13:05:09,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1613 states. [2018-11-28 13:05:09,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 1879 transitions. [2018-11-28 13:05:09,295 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 1879 transitions. Word has length 160 [2018-11-28 13:05:09,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:09,295 INFO L480 AbstractCegarLoop]: Abstraction has 1613 states and 1879 transitions. [2018-11-28 13:05:09,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-28 13:05:09,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 1879 transitions. [2018-11-28 13:05:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-11-28 13:05:09,296 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:09,296 INFO L402 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:09,296 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:09,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:09,297 INFO L82 PathProgramCache]: Analyzing trace with hash 426444561, now seen corresponding path program 26 times [2018-11-28 13:05:09,297 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:09,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:09,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:09,304 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:09,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:09,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:09,634 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:09,644 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:05:09,666 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:05:09,667 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:09,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:09,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:09,721 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:09,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-11-28 13:05:09,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-11-28 13:05:09,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-11-28 13:05:09,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-11-28 13:05:09,722 INFO L87 Difference]: Start difference. First operand 1613 states and 1879 transitions. Second operand 29 states. [2018-11-28 13:05:09,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:09,987 INFO L93 Difference]: Finished difference Result 3167 states and 3940 transitions. [2018-11-28 13:05:09,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-28 13:05:09,987 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 164 [2018-11-28 13:05:09,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:09,990 INFO L225 Difference]: With dead ends: 3167 [2018-11-28 13:05:09,990 INFO L226 Difference]: Without dead ends: 3165 [2018-11-28 13:05:09,992 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 [2018-11-28 13:05:09,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3165 states. [2018-11-28 13:05:10,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3165 to 1682. [2018-11-28 13:05:10,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2018-11-28 13:05:10,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 1960 transitions. [2018-11-28 13:05:10,040 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 1960 transitions. Word has length 164 [2018-11-28 13:05:10,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:10,040 INFO L480 AbstractCegarLoop]: Abstraction has 1682 states and 1960 transitions. [2018-11-28 13:05:10,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-11-28 13:05:10,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 1960 transitions. [2018-11-28 13:05:10,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-11-28 13:05:10,042 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:10,042 INFO L402 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:10,042 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:10,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:10,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1153552874, now seen corresponding path program 27 times [2018-11-28 13:05:10,043 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:10,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:10,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:10,044 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:10,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:10,384 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:10,384 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:10,391 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:05:10,417 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-11-28 13:05:10,417 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:10,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:10,449 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:10,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-11-28 13:05:10,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-28 13:05:10,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-28 13:05:10,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-11-28 13:05:10,450 INFO L87 Difference]: Start difference. First operand 1682 states and 1960 transitions. Second operand 30 states. [2018-11-28 13:05:10,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:10,617 INFO L93 Difference]: Finished difference Result 3306 states and 4114 transitions. [2018-11-28 13:05:10,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-28 13:05:10,617 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 170 [2018-11-28 13:05:10,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:10,622 INFO L225 Difference]: With dead ends: 3306 [2018-11-28 13:05:10,622 INFO L226 Difference]: Without dead ends: 3304 [2018-11-28 13:05:10,623 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 [2018-11-28 13:05:10,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3304 states. [2018-11-28 13:05:10,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3304 to 1751. [2018-11-28 13:05:10,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1751 states. [2018-11-28 13:05:10,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2041 transitions. [2018-11-28 13:05:10,668 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2041 transitions. Word has length 170 [2018-11-28 13:05:10,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:10,668 INFO L480 AbstractCegarLoop]: Abstraction has 1751 states and 2041 transitions. [2018-11-28 13:05:10,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-11-28 13:05:10,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2041 transitions. [2018-11-28 13:05:10,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-28 13:05:10,669 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:10,670 INFO L402 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:10,670 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:10,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:10,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1719577085, now seen corresponding path program 28 times [2018-11-28 13:05:10,670 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:10,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:10,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:10,671 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:10,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:10,949 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:10,949 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:10,956 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:05:10,973 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:05:10,973 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:10,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:11,006 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:11,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-11-28 13:05:11,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-28 13:05:11,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-28 13:05:11,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-11-28 13:05:11,007 INFO L87 Difference]: Start difference. First operand 1751 states and 2041 transitions. Second operand 31 states. [2018-11-28 13:05:11,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:11,163 INFO L93 Difference]: Finished difference Result 3445 states and 4288 transitions. [2018-11-28 13:05:11,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-28 13:05:11,164 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 176 [2018-11-28 13:05:11,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:11,167 INFO L225 Difference]: With dead ends: 3445 [2018-11-28 13:05:11,167 INFO L226 Difference]: Without dead ends: 3443 [2018-11-28 13:05:11,169 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 [2018-11-28 13:05:11,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3443 states. [2018-11-28 13:05:11,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3443 to 1820. [2018-11-28 13:05:11,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1820 states. [2018-11-28 13:05:11,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2122 transitions. [2018-11-28 13:05:11,203 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2122 transitions. Word has length 176 [2018-11-28 13:05:11,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:11,203 INFO L480 AbstractCegarLoop]: Abstraction has 1820 states and 2122 transitions. [2018-11-28 13:05:11,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-28 13:05:11,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2122 transitions. [2018-11-28 13:05:11,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-11-28 13:05:11,204 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:11,204 INFO L402 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:11,205 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:11,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:11,205 INFO L82 PathProgramCache]: Analyzing trace with hash 67740508, now seen corresponding path program 29 times [2018-11-28 13:05:11,205 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:11,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:11,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:11,206 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:11,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:11,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:11,511 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:11,511 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:11,517 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:05:11,546 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-11-28 13:05:11,547 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:11,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:11,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:11,588 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:11,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-11-28 13:05:11,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-28 13:05:11,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-28 13:05:11,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-11-28 13:05:11,589 INFO L87 Difference]: Start difference. First operand 1820 states and 2122 transitions. Second operand 32 states. [2018-11-28 13:05:11,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:11,753 INFO L93 Difference]: Finished difference Result 3584 states and 4462 transitions. [2018-11-28 13:05:11,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-28 13:05:11,753 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 182 [2018-11-28 13:05:11,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:11,755 INFO L225 Difference]: With dead ends: 3584 [2018-11-28 13:05:11,755 INFO L226 Difference]: Without dead ends: 3582 [2018-11-28 13:05:11,756 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 [2018-11-28 13:05:11,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2018-11-28 13:05:11,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 1889. [2018-11-28 13:05:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2018-11-28 13:05:11,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2203 transitions. [2018-11-28 13:05:11,783 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2203 transitions. Word has length 182 [2018-11-28 13:05:11,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:11,783 INFO L480 AbstractCegarLoop]: Abstraction has 1889 states and 2203 transitions. [2018-11-28 13:05:11,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-11-28 13:05:11,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2203 transitions. [2018-11-28 13:05:11,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-11-28 13:05:11,784 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:11,784 INFO L402 BasicCegarLoop]: trace histogram [30, 29, 29, 19, 19, 19, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:11,785 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:11,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:11,785 INFO L82 PathProgramCache]: Analyzing trace with hash 912269923, now seen corresponding path program 13 times [2018-11-28 13:05:11,785 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:11,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:11,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:11,786 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:11,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:11,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 799 proven. 1064 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-11-28 13:05:11,988 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:11,988 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:11,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:12,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 799 proven. 1064 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-11-28 13:05:12,046 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:12,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-11-28 13:05:12,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-28 13:05:12,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-28 13:05:12,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-28 13:05:12,047 INFO L87 Difference]: Start difference. First operand 1889 states and 2203 transitions. Second operand 22 states. [2018-11-28 13:05:12,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:12,105 INFO L93 Difference]: Finished difference Result 3673 states and 4302 transitions. [2018-11-28 13:05:12,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-28 13:05:12,105 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 184 [2018-11-28 13:05:12,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:12,107 INFO L225 Difference]: With dead ends: 3673 [2018-11-28 13:05:12,107 INFO L226 Difference]: Without dead ends: 1899 [2018-11-28 13:05:12,109 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 [2018-11-28 13:05:12,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2018-11-28 13:05:12,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1895. [2018-11-28 13:05:12,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2018-11-28 13:05:12,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2209 transitions. [2018-11-28 13:05:12,135 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2209 transitions. Word has length 184 [2018-11-28 13:05:12,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:12,135 INFO L480 AbstractCegarLoop]: Abstraction has 1895 states and 2209 transitions. [2018-11-28 13:05:12,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-28 13:05:12,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2209 transitions. [2018-11-28 13:05:12,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-11-28 13:05:12,137 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:12,137 INFO L402 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:12,137 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:12,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:12,137 INFO L82 PathProgramCache]: Analyzing trace with hash 208587253, now seen corresponding path program 30 times [2018-11-28 13:05:12,137 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:12,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:12,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:12,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:12,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:12,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:12,480 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:12,487 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:05:12,520 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-11-28 13:05:12,520 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:12,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:12,580 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:12,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-11-28 13:05:12,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-28 13:05:12,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-28 13:05:12,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-11-28 13:05:12,581 INFO L87 Difference]: Start difference. First operand 1895 states and 2209 transitions. Second operand 33 states. [2018-11-28 13:05:12,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:12,786 INFO L93 Difference]: Finished difference Result 3729 states and 4642 transitions. [2018-11-28 13:05:12,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-28 13:05:12,786 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 188 [2018-11-28 13:05:12,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:12,789 INFO L225 Difference]: With dead ends: 3729 [2018-11-28 13:05:12,789 INFO L226 Difference]: Without dead ends: 3727 [2018-11-28 13:05:12,790 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-11-28 13:05:12,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2018-11-28 13:05:12,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 1964. [2018-11-28 13:05:12,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1964 states. [2018-11-28 13:05:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 2290 transitions. [2018-11-28 13:05:12,821 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 2290 transitions. Word has length 188 [2018-11-28 13:05:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:12,821 INFO L480 AbstractCegarLoop]: Abstraction has 1964 states and 2290 transitions. [2018-11-28 13:05:12,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-28 13:05:12,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 2290 transitions. [2018-11-28 13:05:12,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-11-28 13:05:12,822 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:12,822 INFO L402 BasicCegarLoop]: trace histogram [31, 30, 30, 20, 20, 20, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:12,822 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:12,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:12,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1172961604, now seen corresponding path program 14 times [2018-11-28 13:05:12,822 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:12,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:12,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:12,823 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:12,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 840 proven. 1180 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-11-28 13:05:13,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:13,080 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:13,088 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:05:13,108 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:05:13,108 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:13,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:13,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 840 proven. 1180 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-11-28 13:05:13,144 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:13,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-11-28 13:05:13,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-28 13:05:13,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-28 13:05:13,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-11-28 13:05:13,145 INFO L87 Difference]: Start difference. First operand 1964 states and 2290 transitions. Second operand 23 states. [2018-11-28 13:05:13,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:13,199 INFO L93 Difference]: Finished difference Result 3817 states and 4470 transitions. [2018-11-28 13:05:13,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-28 13:05:13,200 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 190 [2018-11-28 13:05:13,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:13,202 INFO L225 Difference]: With dead ends: 3817 [2018-11-28 13:05:13,202 INFO L226 Difference]: Without dead ends: 1974 [2018-11-28 13:05:13,204 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-11-28 13:05:13,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2018-11-28 13:05:13,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1970. [2018-11-28 13:05:13,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1970 states. [2018-11-28 13:05:13,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 2296 transitions. [2018-11-28 13:05:13,233 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 2296 transitions. Word has length 190 [2018-11-28 13:05:13,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:13,234 INFO L480 AbstractCegarLoop]: Abstraction has 1970 states and 2296 transitions. [2018-11-28 13:05:13,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-28 13:05:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 2296 transitions. [2018-11-28 13:05:13,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-11-28 13:05:13,235 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:13,235 INFO L402 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:13,235 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:13,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:13,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1064884686, now seen corresponding path program 31 times [2018-11-28 13:05:13,236 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:13,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:13,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:13,236 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:13,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:13,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:13,584 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:13,584 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:13,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:13,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:13,656 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:13,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-11-28 13:05:13,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-28 13:05:13,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-28 13:05:13,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-11-28 13:05:13,657 INFO L87 Difference]: Start difference. First operand 1970 states and 2296 transitions. Second operand 34 states. [2018-11-28 13:05:13,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:13,853 INFO L93 Difference]: Finished difference Result 3874 states and 4822 transitions. [2018-11-28 13:05:13,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-28 13:05:13,854 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 194 [2018-11-28 13:05:13,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:13,856 INFO L225 Difference]: With dead ends: 3874 [2018-11-28 13:05:13,857 INFO L226 Difference]: Without dead ends: 3872 [2018-11-28 13:05:13,858 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-11-28 13:05:13,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2018-11-28 13:05:13,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2039. [2018-11-28 13:05:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2039 states. [2018-11-28 13:05:13,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2377 transitions. [2018-11-28 13:05:13,887 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2377 transitions. Word has length 194 [2018-11-28 13:05:13,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:13,888 INFO L480 AbstractCegarLoop]: Abstraction has 2039 states and 2377 transitions. [2018-11-28 13:05:13,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-28 13:05:13,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2377 transitions. [2018-11-28 13:05:13,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-11-28 13:05:13,889 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:13,889 INFO L402 BasicCegarLoop]: trace histogram [32, 31, 31, 21, 21, 21, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:13,889 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:13,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:13,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1390117973, now seen corresponding path program 15 times [2018-11-28 13:05:13,890 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:13,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:13,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:13,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:13,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 881 proven. 1302 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-11-28 13:05:14,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:14,079 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:14,090 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:05:14,119 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-11-28 13:05:14,119 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:14,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 962 proven. 341 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2018-11-28 13:05:14,312 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:14,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 13] total 36 [2018-11-28 13:05:14,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-11-28 13:05:14,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-11-28 13:05:14,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-11-28 13:05:14,313 INFO L87 Difference]: Start difference. First operand 2039 states and 2377 transitions. Second operand 36 states. [2018-11-28 13:05:14,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:14,405 INFO L93 Difference]: Finished difference Result 4124 states and 4835 transitions. [2018-11-28 13:05:14,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-28 13:05:14,405 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 196 [2018-11-28 13:05:14,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:14,407 INFO L225 Difference]: With dead ends: 4124 [2018-11-28 13:05:14,407 INFO L226 Difference]: Without dead ends: 2212 [2018-11-28 13:05:14,409 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 [2018-11-28 13:05:14,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2018-11-28 13:05:14,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 2180. [2018-11-28 13:05:14,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2180 states. [2018-11-28 13:05:14,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 2540 transitions. [2018-11-28 13:05:14,432 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 2540 transitions. Word has length 196 [2018-11-28 13:05:14,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:14,432 INFO L480 AbstractCegarLoop]: Abstraction has 2180 states and 2540 transitions. [2018-11-28 13:05:14,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-11-28 13:05:14,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 2540 transitions. [2018-11-28 13:05:14,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-11-28 13:05:14,433 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:14,433 INFO L402 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:14,433 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:14,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:14,434 INFO L82 PathProgramCache]: Analyzing trace with hash -677125401, now seen corresponding path program 32 times [2018-11-28 13:05:14,434 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:14,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:14,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:14,434 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:14,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:14,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 3072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:14,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:14,834 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:14,840 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:05:14,858 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:05:14,858 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:14,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:14,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 3072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:14,895 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:14,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-11-28 13:05:14,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-11-28 13:05:14,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-11-28 13:05:14,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-11-28 13:05:14,896 INFO L87 Difference]: Start difference. First operand 2180 states and 2540 transitions. Second operand 35 states. [2018-11-28 13:05:15,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:15,101 INFO L93 Difference]: Finished difference Result 4286 states and 5335 transitions. [2018-11-28 13:05:15,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-11-28 13:05:15,101 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 200 [2018-11-28 13:05:15,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:15,104 INFO L225 Difference]: With dead ends: 4286 [2018-11-28 13:05:15,104 INFO L226 Difference]: Without dead ends: 4284 [2018-11-28 13:05:15,105 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-11-28 13:05:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4284 states. [2018-11-28 13:05:15,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4284 to 2255. [2018-11-28 13:05:15,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2255 states. [2018-11-28 13:05:15,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 2628 transitions. [2018-11-28 13:05:15,138 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 2628 transitions. Word has length 200 [2018-11-28 13:05:15,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:15,138 INFO L480 AbstractCegarLoop]: Abstraction has 2255 states and 2628 transitions. [2018-11-28 13:05:15,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-11-28 13:05:15,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 2628 transitions. [2018-11-28 13:05:15,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-11-28 13:05:15,139 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:15,139 INFO L402 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:15,139 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:15,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:15,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1507855040, now seen corresponding path program 33 times [2018-11-28 13:05:15,139 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:15,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:15,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:15,140 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:15,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:15,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:15,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:15,486 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:15,493 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:05:15,535 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-11-28 13:05:15,535 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:15,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:15,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:15,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-11-28 13:05:15,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-11-28 13:05:15,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-11-28 13:05:15,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-11-28 13:05:15,577 INFO L87 Difference]: Start difference. First operand 2255 states and 2628 transitions. Second operand 36 states. [2018-11-28 13:05:15,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:15,828 INFO L93 Difference]: Finished difference Result 4437 states and 5524 transitions. [2018-11-28 13:05:15,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-28 13:05:15,828 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 206 [2018-11-28 13:05:15,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:15,830 INFO L225 Difference]: With dead ends: 4437 [2018-11-28 13:05:15,831 INFO L226 Difference]: Without dead ends: 4435 [2018-11-28 13:05:15,831 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-11-28 13:05:15,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4435 states. [2018-11-28 13:05:15,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4435 to 2330. [2018-11-28 13:05:15,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2330 states. [2018-11-28 13:05:15,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 2716 transitions. [2018-11-28 13:05:15,864 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 2716 transitions. Word has length 206 [2018-11-28 13:05:15,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:15,865 INFO L480 AbstractCegarLoop]: Abstraction has 2330 states and 2716 transitions. [2018-11-28 13:05:15,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-11-28 13:05:15,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 2716 transitions. [2018-11-28 13:05:15,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-28 13:05:15,866 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:15,866 INFO L402 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:15,866 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:15,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:15,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1003561177, now seen corresponding path program 34 times [2018-11-28 13:05:15,866 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:15,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:15,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:15,867 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:15,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:16,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:16,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:16,226 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:16,233 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:05:16,251 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:05:16,251 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:16,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:16,316 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:16,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-11-28 13:05:16,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-11-28 13:05:16,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-11-28 13:05:16,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-11-28 13:05:16,317 INFO L87 Difference]: Start difference. First operand 2330 states and 2716 transitions. Second operand 37 states. [2018-11-28 13:05:16,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:16,553 INFO L93 Difference]: Finished difference Result 4588 states and 5713 transitions. [2018-11-28 13:05:16,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-28 13:05:16,554 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 212 [2018-11-28 13:05:16,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:16,556 INFO L225 Difference]: With dead ends: 4588 [2018-11-28 13:05:16,556 INFO L226 Difference]: Without dead ends: 4586 [2018-11-28 13:05:16,557 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 [2018-11-28 13:05:16,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2018-11-28 13:05:16,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 2405. [2018-11-28 13:05:16,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2405 states. [2018-11-28 13:05:16,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 2804 transitions. [2018-11-28 13:05:16,592 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 2804 transitions. Word has length 212 [2018-11-28 13:05:16,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:16,593 INFO L480 AbstractCegarLoop]: Abstraction has 2405 states and 2804 transitions. [2018-11-28 13:05:16,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-11-28 13:05:16,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 2804 transitions. [2018-11-28 13:05:16,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-11-28 13:05:16,594 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:16,594 INFO L402 BasicCegarLoop]: trace histogram [35, 34, 34, 23, 23, 23, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:16,594 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:16,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:16,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1107148698, now seen corresponding path program 16 times [2018-11-28 13:05:16,594 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:16,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:16,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:16,595 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:16,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2984 backedges. 1057 proven. 1564 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-11-28 13:05:16,801 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:16,802 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:16,810 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:05:16,830 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:05:16,830 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:16,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2984 backedges. 1057 proven. 1564 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-11-28 13:05:16,898 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:16,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-11-28 13:05:16,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-28 13:05:16,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-28 13:05:16,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-11-28 13:05:16,899 INFO L87 Difference]: Start difference. First operand 2405 states and 2804 transitions. Second operand 26 states. [2018-11-28 13:05:17,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:17,011 INFO L93 Difference]: Finished difference Result 4681 states and 5480 transitions. [2018-11-28 13:05:17,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-28 13:05:17,011 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 214 [2018-11-28 13:05:17,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:17,012 INFO L225 Difference]: With dead ends: 4681 [2018-11-28 13:05:17,012 INFO L226 Difference]: Without dead ends: 2415 [2018-11-28 13:05:17,014 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 [2018-11-28 13:05:17,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2018-11-28 13:05:17,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 2411. [2018-11-28 13:05:17,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2411 states. [2018-11-28 13:05:17,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 2810 transitions. [2018-11-28 13:05:17,042 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 2810 transitions. Word has length 214 [2018-11-28 13:05:17,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:17,042 INFO L480 AbstractCegarLoop]: Abstraction has 2411 states and 2810 transitions. [2018-11-28 13:05:17,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-28 13:05:17,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 2810 transitions. [2018-11-28 13:05:17,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-28 13:05:17,043 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:17,043 INFO L402 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:17,043 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:17,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:17,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1380939186, now seen corresponding path program 35 times [2018-11-28 13:05:17,044 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:17,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:17,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:17,044 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:17,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:17,431 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:17,431 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:17,436 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:05:17,474 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-11-28 13:05:17,474 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:17,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:17,516 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:17,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-11-28 13:05:17,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-11-28 13:05:17,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-11-28 13:05:17,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-11-28 13:05:17,517 INFO L87 Difference]: Start difference. First operand 2411 states and 2810 transitions. Second operand 38 states. [2018-11-28 13:05:17,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:17,724 INFO L93 Difference]: Finished difference Result 4745 states and 5908 transitions. [2018-11-28 13:05:17,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-28 13:05:17,725 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 218 [2018-11-28 13:05:17,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:17,728 INFO L225 Difference]: With dead ends: 4745 [2018-11-28 13:05:17,728 INFO L226 Difference]: Without dead ends: 4743 [2018-11-28 13:05:17,730 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-11-28 13:05:17,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4743 states. [2018-11-28 13:05:17,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4743 to 2486. [2018-11-28 13:05:17,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2486 states. [2018-11-28 13:05:17,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 2898 transitions. [2018-11-28 13:05:17,772 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 2898 transitions. Word has length 218 [2018-11-28 13:05:17,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:17,773 INFO L480 AbstractCegarLoop]: Abstraction has 2486 states and 2898 transitions. [2018-11-28 13:05:17,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-11-28 13:05:17,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 2898 transitions. [2018-11-28 13:05:17,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-28 13:05:17,774 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:17,774 INFO L402 BasicCegarLoop]: trace histogram [36, 35, 35, 24, 24, 24, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:17,774 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:17,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:17,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1304804813, now seen corresponding path program 17 times [2018-11-28 13:05:17,774 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:17,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:17,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:17,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:17,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:17,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3169 backedges. 1450 proven. 1299 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-11-28 13:05:17,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:17,966 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:17,973 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:05:18,003 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2018-11-28 13:05:18,004 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:18,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:18,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3169 backedges. 1102 proven. 1704 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-11-28 13:05:18,217 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:18,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27] total 51 [2018-11-28 13:05:18,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-11-28 13:05:18,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-11-28 13:05:18,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-11-28 13:05:18,218 INFO L87 Difference]: Start difference. First operand 2486 states and 2898 transitions. Second operand 51 states. [2018-11-28 13:05:18,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:18,375 INFO L93 Difference]: Finished difference Result 6243 states and 7514 transitions. [2018-11-28 13:05:18,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-11-28 13:05:18,375 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 220 [2018-11-28 13:05:18,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:18,377 INFO L225 Difference]: With dead ends: 6243 [2018-11-28 13:05:18,377 INFO L226 Difference]: Without dead ends: 3902 [2018-11-28 13:05:18,379 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 [2018-11-28 13:05:18,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2018-11-28 13:05:18,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3866. [2018-11-28 13:05:18,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3866 states. [2018-11-28 13:05:18,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3866 states to 3866 states and 4512 transitions. [2018-11-28 13:05:18,420 INFO L78 Accepts]: Start accepts. Automaton has 3866 states and 4512 transitions. Word has length 220 [2018-11-28 13:05:18,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:18,420 INFO L480 AbstractCegarLoop]: Abstraction has 3866 states and 4512 transitions. [2018-11-28 13:05:18,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-11-28 13:05:18,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3866 states and 4512 transitions. [2018-11-28 13:05:18,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-28 13:05:18,421 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:18,421 INFO L402 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:18,421 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:18,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:18,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1961296843, now seen corresponding path program 36 times [2018-11-28 13:05:18,421 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:18,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:18,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:18,422 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:18,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3888 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:18,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:18,795 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:18,804 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:05:18,841 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-11-28 13:05:18,841 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:18,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3888 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:18,885 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:18,886 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-11-28 13:05:18,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-11-28 13:05:18,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-11-28 13:05:18,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-11-28 13:05:18,886 INFO L87 Difference]: Start difference. First operand 3866 states and 4512 transitions. Second operand 39 states. [2018-11-28 13:05:19,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:19,108 INFO L93 Difference]: Finished difference Result 7680 states and 9583 transitions. [2018-11-28 13:05:19,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-28 13:05:19,109 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 224 [2018-11-28 13:05:19,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:19,113 INFO L225 Difference]: With dead ends: 7680 [2018-11-28 13:05:19,113 INFO L226 Difference]: Without dead ends: 7678 [2018-11-28 13:05:19,114 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 [2018-11-28 13:05:19,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7678 states. [2018-11-28 13:05:19,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7678 to 4013. [2018-11-28 13:05:19,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4013 states. [2018-11-28 13:05:19,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4013 states to 4013 states and 4684 transitions. [2018-11-28 13:05:19,197 INFO L78 Accepts]: Start accepts. Automaton has 4013 states and 4684 transitions. Word has length 224 [2018-11-28 13:05:19,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:19,198 INFO L480 AbstractCegarLoop]: Abstraction has 4013 states and 4684 transitions. [2018-11-28 13:05:19,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-11-28 13:05:19,198 INFO L276 IsEmpty]: Start isEmpty. Operand 4013 states and 4684 transitions. [2018-11-28 13:05:19,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-28 13:05:19,199 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:19,199 INFO L402 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:19,200 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:19,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:19,200 INFO L82 PathProgramCache]: Analyzing trace with hash -375923932, now seen corresponding path program 37 times [2018-11-28 13:05:19,200 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:19,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:19,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:19,201 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:19,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:19,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:19,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:19,646 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:19,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:19,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:19,728 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:19,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-11-28 13:05:19,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-11-28 13:05:19,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-11-28 13:05:19,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-11-28 13:05:19,729 INFO L87 Difference]: Start difference. First operand 4013 states and 4684 transitions. Second operand 40 states. [2018-11-28 13:05:19,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:19,979 INFO L93 Difference]: Finished difference Result 7975 states and 9952 transitions. [2018-11-28 13:05:19,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-28 13:05:19,979 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 230 [2018-11-28 13:05:19,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:19,984 INFO L225 Difference]: With dead ends: 7975 [2018-11-28 13:05:19,984 INFO L226 Difference]: Without dead ends: 7973 [2018-11-28 13:05:19,987 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-11-28 13:05:19,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7973 states. [2018-11-28 13:05:20,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7973 to 4160. [2018-11-28 13:05:20,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4160 states. [2018-11-28 13:05:20,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4160 states to 4160 states and 4856 transitions. [2018-11-28 13:05:20,073 INFO L78 Accepts]: Start accepts. Automaton has 4160 states and 4856 transitions. Word has length 230 [2018-11-28 13:05:20,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:20,073 INFO L480 AbstractCegarLoop]: Abstraction has 4160 states and 4856 transitions. [2018-11-28 13:05:20,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-11-28 13:05:20,073 INFO L276 IsEmpty]: Start isEmpty. Operand 4160 states and 4856 transitions. [2018-11-28 13:05:20,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-11-28 13:05:20,075 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:20,075 INFO L402 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:20,075 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:20,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:20,075 INFO L82 PathProgramCache]: Analyzing trace with hash -636089411, now seen corresponding path program 38 times [2018-11-28 13:05:20,076 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:20,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:20,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:20,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:20,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 4332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:20,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:20,481 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:20,488 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:05:20,513 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:05:20,513 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:20,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 4332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:20,582 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:20,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-11-28 13:05:20,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-11-28 13:05:20,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-11-28 13:05:20,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-11-28 13:05:20,583 INFO L87 Difference]: Start difference. First operand 4160 states and 4856 transitions. Second operand 41 states. [2018-11-28 13:05:20,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:20,822 INFO L93 Difference]: Finished difference Result 8270 states and 10321 transitions. [2018-11-28 13:05:20,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-11-28 13:05:20,823 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 236 [2018-11-28 13:05:20,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:20,828 INFO L225 Difference]: With dead ends: 8270 [2018-11-28 13:05:20,828 INFO L226 Difference]: Without dead ends: 8268 [2018-11-28 13:05:20,830 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-11-28 13:05:20,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8268 states. [2018-11-28 13:05:20,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8268 to 4307. [2018-11-28 13:05:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4307 states. [2018-11-28 13:05:20,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 5028 transitions. [2018-11-28 13:05:20,924 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 5028 transitions. Word has length 236 [2018-11-28 13:05:20,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:20,924 INFO L480 AbstractCegarLoop]: Abstraction has 4307 states and 5028 transitions. [2018-11-28 13:05:20,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-11-28 13:05:20,924 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 5028 transitions. [2018-11-28 13:05:20,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-11-28 13:05:20,925 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:20,925 INFO L402 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:20,925 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:20,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:20,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1127635562, now seen corresponding path program 39 times [2018-11-28 13:05:20,926 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:20,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:20,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:20,926 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:20,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:21,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:21,344 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:21,344 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:21,350 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:05:21,390 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-11-28 13:05:21,390 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:21,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:21,435 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:21,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-11-28 13:05:21,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-11-28 13:05:21,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-11-28 13:05:21,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-11-28 13:05:21,436 INFO L87 Difference]: Start difference. First operand 4307 states and 5028 transitions. Second operand 42 states. [2018-11-28 13:05:21,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:21,659 INFO L93 Difference]: Finished difference Result 8565 states and 10690 transitions. [2018-11-28 13:05:21,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-28 13:05:21,659 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 242 [2018-11-28 13:05:21,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:21,663 INFO L225 Difference]: With dead ends: 8565 [2018-11-28 13:05:21,664 INFO L226 Difference]: Without dead ends: 8563 [2018-11-28 13:05:21,665 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 [2018-11-28 13:05:21,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8563 states. [2018-11-28 13:05:21,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8563 to 4454. [2018-11-28 13:05:21,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4454 states. [2018-11-28 13:05:21,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 5200 transitions. [2018-11-28 13:05:21,746 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 5200 transitions. Word has length 242 [2018-11-28 13:05:21,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:21,746 INFO L480 AbstractCegarLoop]: Abstraction has 4454 states and 5200 transitions. [2018-11-28 13:05:21,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-11-28 13:05:21,746 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 5200 transitions. [2018-11-28 13:05:21,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-11-28 13:05:21,748 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:21,748 INFO L402 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:21,748 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:21,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:21,748 INFO L82 PathProgramCache]: Analyzing trace with hash -36783953, now seen corresponding path program 40 times [2018-11-28 13:05:21,748 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:21,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:21,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:21,749 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:21,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:22,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 4800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:22,208 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:22,208 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:22,214 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:05:22,237 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:05:22,237 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:22,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 4800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:22,282 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:22,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-11-28 13:05:22,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-11-28 13:05:22,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-11-28 13:05:22,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-11-28 13:05:22,283 INFO L87 Difference]: Start difference. First operand 4454 states and 5200 transitions. Second operand 43 states. [2018-11-28 13:05:22,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:22,554 INFO L93 Difference]: Finished difference Result 8860 states and 11059 transitions. [2018-11-28 13:05:22,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-11-28 13:05:22,554 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 248 [2018-11-28 13:05:22,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:22,559 INFO L225 Difference]: With dead ends: 8860 [2018-11-28 13:05:22,559 INFO L226 Difference]: Without dead ends: 8858 [2018-11-28 13:05:22,560 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 [2018-11-28 13:05:22,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8858 states. [2018-11-28 13:05:22,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8858 to 4601. [2018-11-28 13:05:22,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4601 states. [2018-11-28 13:05:22,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 5372 transitions. [2018-11-28 13:05:22,644 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 5372 transitions. Word has length 248 [2018-11-28 13:05:22,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:22,644 INFO L480 AbstractCegarLoop]: Abstraction has 4601 states and 5372 transitions. [2018-11-28 13:05:22,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-11-28 13:05:22,645 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 5372 transitions. [2018-11-28 13:05:22,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-11-28 13:05:22,646 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:22,646 INFO L402 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:22,646 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:22,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:22,646 INFO L82 PathProgramCache]: Analyzing trace with hash -403352312, now seen corresponding path program 41 times [2018-11-28 13:05:22,646 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:22,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:22,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:22,647 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:22,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5043 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:23,123 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:23,123 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:23,130 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:05:23,175 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-11-28 13:05:23,175 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:23,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5043 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:23,223 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:23,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-11-28 13:05:23,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-11-28 13:05:23,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-11-28 13:05:23,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-11-28 13:05:23,224 INFO L87 Difference]: Start difference. First operand 4601 states and 5372 transitions. Second operand 44 states. [2018-11-28 13:05:23,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:23,516 INFO L93 Difference]: Finished difference Result 9155 states and 11428 transitions. [2018-11-28 13:05:23,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-11-28 13:05:23,517 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 254 [2018-11-28 13:05:23,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:23,521 INFO L225 Difference]: With dead ends: 9155 [2018-11-28 13:05:23,522 INFO L226 Difference]: Without dead ends: 9153 [2018-11-28 13:05:23,523 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 [2018-11-28 13:05:23,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9153 states. [2018-11-28 13:05:23,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9153 to 4748. [2018-11-28 13:05:23,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4748 states. [2018-11-28 13:05:23,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4748 states to 4748 states and 5544 transitions. [2018-11-28 13:05:23,609 INFO L78 Accepts]: Start accepts. Automaton has 4748 states and 5544 transitions. Word has length 254 [2018-11-28 13:05:23,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:23,609 INFO L480 AbstractCegarLoop]: Abstraction has 4748 states and 5544 transitions. [2018-11-28 13:05:23,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-11-28 13:05:23,609 INFO L276 IsEmpty]: Start isEmpty. Operand 4748 states and 5544 transitions. [2018-11-28 13:05:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-11-28 13:05:23,611 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:23,611 INFO L402 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:23,611 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:23,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:23,611 INFO L82 PathProgramCache]: Analyzing trace with hash -842954079, now seen corresponding path program 42 times [2018-11-28 13:05:23,611 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:23,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:23,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:23,612 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:23,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:24,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5292 backedges. 0 proven. 5292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:24,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:24,094 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:24,101 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:05:24,148 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-11-28 13:05:24,148 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:24,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:24,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5292 backedges. 0 proven. 5292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:24,202 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:24,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-11-28 13:05:24,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-11-28 13:05:24,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-11-28 13:05:24,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-11-28 13:05:24,203 INFO L87 Difference]: Start difference. First operand 4748 states and 5544 transitions. Second operand 45 states. [2018-11-28 13:05:24,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:24,487 INFO L93 Difference]: Finished difference Result 9450 states and 11797 transitions. [2018-11-28 13:05:24,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-11-28 13:05:24,488 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 260 [2018-11-28 13:05:24,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:24,507 INFO L225 Difference]: With dead ends: 9450 [2018-11-28 13:05:24,507 INFO L226 Difference]: Without dead ends: 9448 [2018-11-28 13:05:24,508 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 [2018-11-28 13:05:24,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9448 states. [2018-11-28 13:05:24,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9448 to 4895. [2018-11-28 13:05:24,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4895 states. [2018-11-28 13:05:24,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4895 states to 4895 states and 5716 transitions. [2018-11-28 13:05:24,594 INFO L78 Accepts]: Start accepts. Automaton has 4895 states and 5716 transitions. Word has length 260 [2018-11-28 13:05:24,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:24,594 INFO L480 AbstractCegarLoop]: Abstraction has 4895 states and 5716 transitions. [2018-11-28 13:05:24,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-11-28 13:05:24,594 INFO L276 IsEmpty]: Start isEmpty. Operand 4895 states and 5716 transitions. [2018-11-28 13:05:24,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-11-28 13:05:24,597 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:24,597 INFO L402 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:24,597 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:24,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:24,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1919641978, now seen corresponding path program 43 times [2018-11-28 13:05:24,598 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:24,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:24,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:24,598 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:24,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:25,098 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:25,098 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:25,098 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:25,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:25,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:25,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:25,177 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:25,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-11-28 13:05:25,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-11-28 13:05:25,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-11-28 13:05:25,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-11-28 13:05:25,178 INFO L87 Difference]: Start difference. First operand 4895 states and 5716 transitions. Second operand 46 states. [2018-11-28 13:05:25,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:25,477 INFO L93 Difference]: Finished difference Result 9745 states and 12166 transitions. [2018-11-28 13:05:25,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-28 13:05:25,477 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 266 [2018-11-28 13:05:25,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:25,482 INFO L225 Difference]: With dead ends: 9745 [2018-11-28 13:05:25,482 INFO L226 Difference]: Without dead ends: 9743 [2018-11-28 13:05:25,484 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 [2018-11-28 13:05:25,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9743 states. [2018-11-28 13:05:25,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9743 to 5042. [2018-11-28 13:05:25,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5042 states. [2018-11-28 13:05:25,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5042 states to 5042 states and 5888 transitions. [2018-11-28 13:05:25,581 INFO L78 Accepts]: Start accepts. Automaton has 5042 states and 5888 transitions. Word has length 266 [2018-11-28 13:05:25,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:25,581 INFO L480 AbstractCegarLoop]: Abstraction has 5042 states and 5888 transitions. [2018-11-28 13:05:25,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-11-28 13:05:25,581 INFO L276 IsEmpty]: Start isEmpty. Operand 5042 states and 5888 transitions. [2018-11-28 13:05:25,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-11-28 13:05:25,583 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:25,583 INFO L402 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:25,583 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:25,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:25,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1294007917, now seen corresponding path program 44 times [2018-11-28 13:05:25,583 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:25,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:25,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:25,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:25,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:26,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:26,162 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:26,162 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:26,169 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:05:26,194 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:05:26,194 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:26,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:26,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:26,246 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:26,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-11-28 13:05:26,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-11-28 13:05:26,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-11-28 13:05:26,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-11-28 13:05:26,247 INFO L87 Difference]: Start difference. First operand 5042 states and 5888 transitions. Second operand 47 states. [2018-11-28 13:05:26,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:26,513 INFO L93 Difference]: Finished difference Result 10040 states and 12535 transitions. [2018-11-28 13:05:26,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-11-28 13:05:26,513 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 272 [2018-11-28 13:05:26,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:26,519 INFO L225 Difference]: With dead ends: 10040 [2018-11-28 13:05:26,519 INFO L226 Difference]: Without dead ends: 10038 [2018-11-28 13:05:26,522 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-11-28 13:05:26,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10038 states. [2018-11-28 13:05:26,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10038 to 5189. [2018-11-28 13:05:26,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5189 states. [2018-11-28 13:05:26,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 6060 transitions. [2018-11-28 13:05:26,627 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 6060 transitions. Word has length 272 [2018-11-28 13:05:26,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:26,627 INFO L480 AbstractCegarLoop]: Abstraction has 5189 states and 6060 transitions. [2018-11-28 13:05:26,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-11-28 13:05:26,627 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 6060 transitions. [2018-11-28 13:05:26,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-11-28 13:05:26,629 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:26,629 INFO L402 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:26,629 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:26,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:26,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1857839852, now seen corresponding path program 45 times [2018-11-28 13:05:26,630 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:26,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:26,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:26,630 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:26,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 0 proven. 6075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:27,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:27,180 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:27,199 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:05:27,248 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-11-28 13:05:27,248 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:27,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 0 proven. 6075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:27,301 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:27,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-11-28 13:05:27,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-11-28 13:05:27,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-11-28 13:05:27,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-11-28 13:05:27,302 INFO L87 Difference]: Start difference. First operand 5189 states and 6060 transitions. Second operand 48 states. [2018-11-28 13:05:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:27,551 INFO L93 Difference]: Finished difference Result 10335 states and 12904 transitions. [2018-11-28 13:05:27,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-28 13:05:27,551 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 278 [2018-11-28 13:05:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:27,557 INFO L225 Difference]: With dead ends: 10335 [2018-11-28 13:05:27,557 INFO L226 Difference]: Without dead ends: 10333 [2018-11-28 13:05:27,559 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 [2018-11-28 13:05:27,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10333 states. [2018-11-28 13:05:27,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10333 to 5336. [2018-11-28 13:05:27,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5336 states. [2018-11-28 13:05:27,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5336 states to 5336 states and 6232 transitions. [2018-11-28 13:05:27,680 INFO L78 Accepts]: Start accepts. Automaton has 5336 states and 6232 transitions. Word has length 278 [2018-11-28 13:05:27,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:27,680 INFO L480 AbstractCegarLoop]: Abstraction has 5336 states and 6232 transitions. [2018-11-28 13:05:27,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-11-28 13:05:27,680 INFO L276 IsEmpty]: Start isEmpty. Operand 5336 states and 6232 transitions. [2018-11-28 13:05:27,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-11-28 13:05:27,682 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:27,682 INFO L402 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:27,682 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:27,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:27,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1319658107, now seen corresponding path program 46 times [2018-11-28 13:05:27,683 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:27,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:27,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:27,683 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:27,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:28,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:28,247 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:28,247 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:28,254 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:05:28,278 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:05:28,278 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:28,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:28,349 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:28,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-11-28 13:05:28,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-11-28 13:05:28,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-11-28 13:05:28,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-11-28 13:05:28,350 INFO L87 Difference]: Start difference. First operand 5336 states and 6232 transitions. Second operand 49 states. [2018-11-28 13:05:28,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:28,682 INFO L93 Difference]: Finished difference Result 10630 states and 13273 transitions. [2018-11-28 13:05:28,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-28 13:05:28,682 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 284 [2018-11-28 13:05:28,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:28,688 INFO L225 Difference]: With dead ends: 10630 [2018-11-28 13:05:28,688 INFO L226 Difference]: Without dead ends: 10628 [2018-11-28 13:05:28,690 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-11-28 13:05:28,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10628 states. [2018-11-28 13:05:28,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10628 to 5483. [2018-11-28 13:05:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5483 states. [2018-11-28 13:05:28,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5483 states to 5483 states and 6404 transitions. [2018-11-28 13:05:28,800 INFO L78 Accepts]: Start accepts. Automaton has 5483 states and 6404 transitions. Word has length 284 [2018-11-28 13:05:28,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:28,800 INFO L480 AbstractCegarLoop]: Abstraction has 5483 states and 6404 transitions. [2018-11-28 13:05:28,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-11-28 13:05:28,801 INFO L276 IsEmpty]: Start isEmpty. Operand 5483 states and 6404 transitions. [2018-11-28 13:05:28,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-11-28 13:05:28,804 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:28,804 INFO L402 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:28,804 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:28,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:28,805 INFO L82 PathProgramCache]: Analyzing trace with hash 448315742, now seen corresponding path program 47 times [2018-11-28 13:05:28,805 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:28,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:28,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:28,805 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:28,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6627 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:29,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:29,443 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:29,451 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:05:29,505 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-11-28 13:05:29,506 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:29,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6627 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:29,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:29,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-11-28 13:05:29,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-11-28 13:05:29,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-11-28 13:05:29,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-11-28 13:05:29,563 INFO L87 Difference]: Start difference. First operand 5483 states and 6404 transitions. Second operand 50 states. [2018-11-28 13:05:29,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:29,829 INFO L93 Difference]: Finished difference Result 10925 states and 13642 transitions. [2018-11-28 13:05:29,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-11-28 13:05:29,829 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 290 [2018-11-28 13:05:29,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:29,836 INFO L225 Difference]: With dead ends: 10925 [2018-11-28 13:05:29,836 INFO L226 Difference]: Without dead ends: 10923 [2018-11-28 13:05:29,839 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 [2018-11-28 13:05:29,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10923 states. [2018-11-28 13:05:29,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10923 to 5630. [2018-11-28 13:05:29,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5630 states. [2018-11-28 13:05:29,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5630 states to 5630 states and 6576 transitions. [2018-11-28 13:05:29,967 INFO L78 Accepts]: Start accepts. Automaton has 5630 states and 6576 transitions. Word has length 290 [2018-11-28 13:05:29,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:29,968 INFO L480 AbstractCegarLoop]: Abstraction has 5630 states and 6576 transitions. [2018-11-28 13:05:29,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-11-28 13:05:29,968 INFO L276 IsEmpty]: Start isEmpty. Operand 5630 states and 6576 transitions. [2018-11-28 13:05:29,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-11-28 13:05:29,972 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:29,972 INFO L402 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:29,972 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:29,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:29,972 INFO L82 PathProgramCache]: Analyzing trace with hash -2003050889, now seen corresponding path program 48 times [2018-11-28 13:05:29,972 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:29,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:29,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:29,973 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:29,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:30,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6912 backedges. 0 proven. 6912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:30,604 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:30,604 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:30,612 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:05:30,666 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-11-28 13:05:30,666 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:30,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:30,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6912 backedges. 0 proven. 6912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:30,730 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:30,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-11-28 13:05:30,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-11-28 13:05:30,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-11-28 13:05:30,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-11-28 13:05:30,731 INFO L87 Difference]: Start difference. First operand 5630 states and 6576 transitions. Second operand 51 states. [2018-11-28 13:05:31,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:31,010 INFO L93 Difference]: Finished difference Result 11220 states and 14011 transitions. [2018-11-28 13:05:31,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-11-28 13:05:31,011 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 296 [2018-11-28 13:05:31,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:31,017 INFO L225 Difference]: With dead ends: 11220 [2018-11-28 13:05:31,017 INFO L226 Difference]: Without dead ends: 11218 [2018-11-28 13:05:31,019 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 [2018-11-28 13:05:31,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11218 states. [2018-11-28 13:05:31,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11218 to 5777. [2018-11-28 13:05:31,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5777 states. [2018-11-28 13:05:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5777 states to 5777 states and 6748 transitions. [2018-11-28 13:05:31,133 INFO L78 Accepts]: Start accepts. Automaton has 5777 states and 6748 transitions. Word has length 296 [2018-11-28 13:05:31,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:31,134 INFO L480 AbstractCegarLoop]: Abstraction has 5777 states and 6748 transitions. [2018-11-28 13:05:31,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-11-28 13:05:31,134 INFO L276 IsEmpty]: Start isEmpty. Operand 5777 states and 6748 transitions. [2018-11-28 13:05:31,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-11-28 13:05:31,136 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:31,136 INFO L402 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:31,137 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:31,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:31,137 INFO L82 PathProgramCache]: Analyzing trace with hash -9370416, now seen corresponding path program 49 times [2018-11-28 13:05:31,137 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:31,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:31,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:31,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:31,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 7203 backedges. 0 proven. 7203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:31,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:31,791 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:31,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:31,826 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:31,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7203 backedges. 0 proven. 7203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:31,883 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:31,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-11-28 13:05:31,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-11-28 13:05:31,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-11-28 13:05:31,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-11-28 13:05:31,884 INFO L87 Difference]: Start difference. First operand 5777 states and 6748 transitions. Second operand 52 states. [2018-11-28 13:05:32,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:32,184 INFO L93 Difference]: Finished difference Result 11515 states and 14380 transitions. [2018-11-28 13:05:32,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-11-28 13:05:32,185 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 302 [2018-11-28 13:05:32,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:32,191 INFO L225 Difference]: With dead ends: 11515 [2018-11-28 13:05:32,191 INFO L226 Difference]: Without dead ends: 11513 [2018-11-28 13:05:32,193 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 [2018-11-28 13:05:32,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11513 states. [2018-11-28 13:05:32,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11513 to 5924. [2018-11-28 13:05:32,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5924 states. [2018-11-28 13:05:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5924 states to 5924 states and 6920 transitions. [2018-11-28 13:05:32,314 INFO L78 Accepts]: Start accepts. Automaton has 5924 states and 6920 transitions. Word has length 302 [2018-11-28 13:05:32,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:32,314 INFO L480 AbstractCegarLoop]: Abstraction has 5924 states and 6920 transitions. [2018-11-28 13:05:32,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-11-28 13:05:32,315 INFO L276 IsEmpty]: Start isEmpty. Operand 5924 states and 6920 transitions. [2018-11-28 13:05:32,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-11-28 13:05:32,317 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:32,317 INFO L402 BasicCegarLoop]: trace histogram [50, 49, 49, 26, 26, 26, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:32,318 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:32,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:32,318 INFO L82 PathProgramCache]: Analyzing trace with hash -933628791, now seen corresponding path program 18 times [2018-11-28 13:05:32,318 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:32,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:32,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:32,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:32,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6053 backedges. 2464 proven. 2002 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-11-28 13:05:32,550 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:32,551 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:32,559 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:05:32,600 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-11-28 13:05:32,600 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:32,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:32,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6053 backedges. 2464 proven. 2002 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-11-28 13:05:32,649 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:32,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-11-28 13:05:32,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-11-28 13:05:32,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-11-28 13:05:32,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-11-28 13:05:32,649 INFO L87 Difference]: Start difference. First operand 5924 states and 6920 transitions. Second operand 29 states. [2018-11-28 13:05:32,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:32,732 INFO L93 Difference]: Finished difference Result 11701 states and 13694 transitions. [2018-11-28 13:05:32,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-28 13:05:32,732 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 304 [2018-11-28 13:05:32,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:32,736 INFO L225 Difference]: With dead ends: 11701 [2018-11-28 13:05:32,736 INFO L226 Difference]: Without dead ends: 5934 [2018-11-28 13:05:32,740 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-11-28 13:05:32,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5934 states. [2018-11-28 13:05:32,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5934 to 5930. [2018-11-28 13:05:32,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5930 states. [2018-11-28 13:05:32,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5930 states to 5930 states and 6926 transitions. [2018-11-28 13:05:32,835 INFO L78 Accepts]: Start accepts. Automaton has 5930 states and 6926 transitions. Word has length 304 [2018-11-28 13:05:32,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:32,836 INFO L480 AbstractCegarLoop]: Abstraction has 5930 states and 6926 transitions. [2018-11-28 13:05:32,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-11-28 13:05:32,836 INFO L276 IsEmpty]: Start isEmpty. Operand 5930 states and 6926 transitions. [2018-11-28 13:05:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-11-28 13:05:32,838 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:32,838 INFO L402 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:32,839 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:32,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:32,839 INFO L82 PathProgramCache]: Analyzing trace with hash -748927895, now seen corresponding path program 50 times [2018-11-28 13:05:32,839 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:32,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:32,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:32,839 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:32,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:33,479 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:33,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:33,479 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:33,487 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:05:33,513 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:05:33,513 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:33,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:33,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:33,573 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:33,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-11-28 13:05:33,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-11-28 13:05:33,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-11-28 13:05:33,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-11-28 13:05:33,574 INFO L87 Difference]: Start difference. First operand 5930 states and 6926 transitions. Second operand 53 states. [2018-11-28 13:05:33,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:33,852 INFO L93 Difference]: Finished difference Result 11816 states and 14755 transitions. [2018-11-28 13:05:33,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-11-28 13:05:33,853 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 308 [2018-11-28 13:05:33,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:33,859 INFO L225 Difference]: With dead ends: 11816 [2018-11-28 13:05:33,859 INFO L226 Difference]: Without dead ends: 11814 [2018-11-28 13:05:33,861 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-11-28 13:05:33,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11814 states. [2018-11-28 13:05:33,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11814 to 6077. [2018-11-28 13:05:33,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6077 states. [2018-11-28 13:05:33,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6077 states to 6077 states and 7098 transitions. [2018-11-28 13:05:33,988 INFO L78 Accepts]: Start accepts. Automaton has 6077 states and 7098 transitions. Word has length 308 [2018-11-28 13:05:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:33,988 INFO L480 AbstractCegarLoop]: Abstraction has 6077 states and 7098 transitions. [2018-11-28 13:05:33,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-11-28 13:05:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 6077 states and 7098 transitions. [2018-11-28 13:05:33,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-11-28 13:05:33,991 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:33,991 INFO L402 BasicCegarLoop]: trace histogram [51, 50, 50, 27, 27, 27, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:33,991 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:33,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:33,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1316205026, now seen corresponding path program 19 times [2018-11-28 13:05:33,991 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:33,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:33,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:33,992 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:33,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:34,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6304 backedges. 2557 proven. 2160 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-11-28 13:05:34,248 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:34,248 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:34,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:34,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6304 backedges. 2557 proven. 2160 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-11-28 13:05:34,348 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:34,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-11-28 13:05:34,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-28 13:05:34,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-28 13:05:34,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-11-28 13:05:34,349 INFO L87 Difference]: Start difference. First operand 6077 states and 7098 transitions. Second operand 30 states. [2018-11-28 13:05:34,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:34,449 INFO L93 Difference]: Finished difference Result 12001 states and 14044 transitions. [2018-11-28 13:05:34,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-28 13:05:34,449 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 310 [2018-11-28 13:05:34,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:34,453 INFO L225 Difference]: With dead ends: 12001 [2018-11-28 13:05:34,453 INFO L226 Difference]: Without dead ends: 6087 [2018-11-28 13:05:34,457 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-11-28 13:05:34,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6087 states. [2018-11-28 13:05:34,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6087 to 6083. [2018-11-28 13:05:34,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6083 states. [2018-11-28 13:05:34,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6083 states to 6083 states and 7104 transitions. [2018-11-28 13:05:34,531 INFO L78 Accepts]: Start accepts. Automaton has 6083 states and 7104 transitions. Word has length 310 [2018-11-28 13:05:34,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:34,531 INFO L480 AbstractCegarLoop]: Abstraction has 6083 states and 7104 transitions. [2018-11-28 13:05:34,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-11-28 13:05:34,531 INFO L276 IsEmpty]: Start isEmpty. Operand 6083 states and 7104 transitions. [2018-11-28 13:05:34,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-11-28 13:05:34,535 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:34,536 INFO L402 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:34,536 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:34,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:34,536 INFO L82 PathProgramCache]: Analyzing trace with hash 288730434, now seen corresponding path program 51 times [2018-11-28 13:05:34,536 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:34,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:34,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:34,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:34,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:35,209 INFO L134 CoverageAnalysis]: Checked inductivity of 7803 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:35,209 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:35,209 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:35,217 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:05:35,275 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-11-28 13:05:35,275 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:35,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7803 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:35,337 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:35,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-11-28 13:05:35,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-11-28 13:05:35,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-11-28 13:05:35,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-11-28 13:05:35,338 INFO L87 Difference]: Start difference. First operand 6083 states and 7104 transitions. Second operand 54 states. [2018-11-28 13:05:35,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:35,612 INFO L93 Difference]: Finished difference Result 12117 states and 15130 transitions. [2018-11-28 13:05:35,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-28 13:05:35,613 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 314 [2018-11-28 13:05:35,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:35,620 INFO L225 Difference]: With dead ends: 12117 [2018-11-28 13:05:35,620 INFO L226 Difference]: Without dead ends: 12115 [2018-11-28 13:05:35,622 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 [2018-11-28 13:05:35,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12115 states. [2018-11-28 13:05:35,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12115 to 6230. [2018-11-28 13:05:35,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6230 states. [2018-11-28 13:05:35,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 7276 transitions. [2018-11-28 13:05:35,781 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 7276 transitions. Word has length 314 [2018-11-28 13:05:35,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:35,781 INFO L480 AbstractCegarLoop]: Abstraction has 6230 states and 7276 transitions. [2018-11-28 13:05:35,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-11-28 13:05:35,781 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 7276 transitions. [2018-11-28 13:05:35,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-11-28 13:05:35,784 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:35,784 INFO L402 BasicCegarLoop]: trace histogram [52, 51, 51, 28, 28, 28, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:35,785 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:35,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:35,785 INFO L82 PathProgramCache]: Analyzing trace with hash 2073446523, now seen corresponding path program 20 times [2018-11-28 13:05:35,785 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:35,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:35,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:35,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:35,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:36,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 2650 proven. 2324 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-11-28 13:05:36,036 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:36,036 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:36,044 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:05:36,073 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:05:36,073 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:36,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 2650 proven. 2324 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-11-28 13:05:36,125 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:36,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-11-28 13:05:36,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-28 13:05:36,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-28 13:05:36,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-11-28 13:05:36,125 INFO L87 Difference]: Start difference. First operand 6230 states and 7276 transitions. Second operand 31 states. [2018-11-28 13:05:36,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:36,218 INFO L93 Difference]: Finished difference Result 12301 states and 14394 transitions. [2018-11-28 13:05:36,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-28 13:05:36,219 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 316 [2018-11-28 13:05:36,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:36,223 INFO L225 Difference]: With dead ends: 12301 [2018-11-28 13:05:36,223 INFO L226 Difference]: Without dead ends: 6240 [2018-11-28 13:05:36,228 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 [2018-11-28 13:05:36,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2018-11-28 13:05:36,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 6236. [2018-11-28 13:05:36,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6236 states. [2018-11-28 13:05:36,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 7282 transitions. [2018-11-28 13:05:36,304 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 7282 transitions. Word has length 316 [2018-11-28 13:05:36,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:36,305 INFO L480 AbstractCegarLoop]: Abstraction has 6236 states and 7282 transitions. [2018-11-28 13:05:36,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-28 13:05:36,305 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 7282 transitions. [2018-11-28 13:05:36,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-11-28 13:05:36,308 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:36,308 INFO L402 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:36,309 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:36,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:36,309 INFO L82 PathProgramCache]: Analyzing trace with hash 663310171, now seen corresponding path program 52 times [2018-11-28 13:05:36,309 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:36,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:36,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:36,310 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:36,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8112 backedges. 0 proven. 8112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:05:37,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:37,004 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:37,010 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:05:37,039 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:05:37,040 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:37,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8112 backedges. 8111 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 13:05:38,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 13:05:38,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [54] imperfect sequences [54] total 107 [2018-11-28 13:05:38,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-11-28 13:05:38,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-11-28 13:05:38,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2915, Invalid=8427, Unknown=0, NotChecked=0, Total=11342 [2018-11-28 13:05:38,409 INFO L87 Difference]: Start difference. First operand 6236 states and 7282 transitions. Second operand 107 states. [2018-11-28 13:05:42,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:42,275 INFO L93 Difference]: Finished difference Result 9680 states and 11284 transitions. [2018-11-28 13:05:42,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-11-28 13:05:42,275 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 320 [2018-11-28 13:05:42,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:42,278 INFO L225 Difference]: With dead ends: 9680 [2018-11-28 13:05:42,278 INFO L226 Difference]: Without dead ends: 3619 [2018-11-28 13:05:42,283 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16750 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=16944, Invalid=50916, Unknown=0, NotChecked=0, Total=67860 [2018-11-28 13:05:42,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3619 states. [2018-11-28 13:05:42,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3619 to 455. [2018-11-28 13:05:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-11-28 13:05:42,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 477 transitions. [2018-11-28 13:05:42,300 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 477 transitions. Word has length 320 [2018-11-28 13:05:42,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:42,300 INFO L480 AbstractCegarLoop]: Abstraction has 455 states and 477 transitions. [2018-11-28 13:05:42,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-11-28 13:05:42,301 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 477 transitions. [2018-11-28 13:05:42,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-11-28 13:05:42,302 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:42,302 INFO L402 BasicCegarLoop]: trace histogram [53, 52, 52, 29, 29, 29, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:42,302 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:42,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:42,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1267320916, now seen corresponding path program 21 times [2018-11-28 13:05:42,302 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:42,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:42,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:42,303 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:42,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:42,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 2743 proven. 2494 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-11-28 13:05:42,588 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:42,588 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:42,594 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:05:42,633 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2018-11-28 13:05:42,633 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:42,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:43,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 2820 proven. 1680 refuted. 0 times theorem prover too weak. 2324 trivial. 0 not checked. [2018-11-28 13:05:43,168 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:43,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 26] total 57 [2018-11-28 13:05:43,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-11-28 13:05:43,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-11-28 13:05:43,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-11-28 13:05:43,170 INFO L87 Difference]: Start difference. First operand 455 states and 477 transitions. Second operand 57 states. [2018-11-28 13:05:43,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:43,305 INFO L93 Difference]: Finished difference Result 604 states and 627 transitions. [2018-11-28 13:05:43,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-11-28 13:05:43,305 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 322 [2018-11-28 13:05:43,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:43,306 INFO L225 Difference]: With dead ends: 604 [2018-11-28 13:05:43,306 INFO L226 Difference]: Without dead ends: 462 [2018-11-28 13:05:43,307 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-11-28 13:05:43,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2018-11-28 13:05:43,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 461. [2018-11-28 13:05:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-11-28 13:05:43,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 481 transitions. [2018-11-28 13:05:43,318 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 481 transitions. Word has length 322 [2018-11-28 13:05:43,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:43,319 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 481 transitions. [2018-11-28 13:05:43,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-11-28 13:05:43,319 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 481 transitions. [2018-11-28 13:05:43,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-11-28 13:05:43,320 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:43,320 INFO L402 BasicCegarLoop]: trace histogram [56, 55, 55, 31, 31, 31, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:43,320 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:43,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:43,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1022796583, now seen corresponding path program 22 times [2018-11-28 13:05:43,321 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:43,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:43,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:43,321 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:43,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7635 backedges. 3055 proven. 2852 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-11-28 13:05:43,630 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:43,630 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:43,636 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:05:43,665 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:05:43,665 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:43,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7635 backedges. 3055 proven. 2852 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-11-28 13:05:43,723 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:43,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-11-28 13:05:43,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-28 13:05:43,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-28 13:05:43,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-11-28 13:05:43,724 INFO L87 Difference]: Start difference. First operand 461 states and 481 transitions. Second operand 34 states. [2018-11-28 13:05:43,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:43,803 INFO L93 Difference]: Finished difference Result 609 states and 629 transitions. [2018-11-28 13:05:43,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-28 13:05:43,803 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 340 [2018-11-28 13:05:43,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:43,804 INFO L225 Difference]: With dead ends: 609 [2018-11-28 13:05:43,804 INFO L226 Difference]: Without dead ends: 461 [2018-11-28 13:05:43,804 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 [2018-11-28 13:05:43,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-11-28 13:05:43,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-11-28 13:05:43,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-11-28 13:05:43,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 480 transitions. [2018-11-28 13:05:43,815 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 480 transitions. Word has length 340 [2018-11-28 13:05:43,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:43,815 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 480 transitions. [2018-11-28 13:05:43,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-28 13:05:43,816 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 480 transitions. [2018-11-28 13:05:43,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-11-28 13:05:43,817 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:43,817 INFO L402 BasicCegarLoop]: trace histogram [57, 56, 56, 32, 32, 32, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:43,817 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:43,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:43,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1390337614, now seen corresponding path program 23 times [2018-11-28 13:05:43,817 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:43,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:43,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:43,818 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:43,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:44,140 INFO L134 CoverageAnalysis]: Checked inductivity of 7920 backedges. 3152 proven. 3040 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-11-28 13:05:44,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:44,141 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:44,148 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:05:44,200 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-11-28 13:05:44,200 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:44,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7920 backedges. 3152 proven. 3040 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-11-28 13:05:44,259 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:44,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-11-28 13:05:44,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-11-28 13:05:44,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-11-28 13:05:44,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-11-28 13:05:44,260 INFO L87 Difference]: Start difference. First operand 461 states and 480 transitions. Second operand 35 states. [2018-11-28 13:05:44,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:44,337 INFO L93 Difference]: Finished difference Result 609 states and 628 transitions. [2018-11-28 13:05:44,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-11-28 13:05:44,337 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 346 [2018-11-28 13:05:44,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:44,337 INFO L225 Difference]: With dead ends: 609 [2018-11-28 13:05:44,337 INFO L226 Difference]: Without dead ends: 461 [2018-11-28 13:05:44,338 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 [2018-11-28 13:05:44,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-11-28 13:05:44,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-11-28 13:05:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-11-28 13:05:44,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 479 transitions. [2018-11-28 13:05:44,347 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 479 transitions. Word has length 346 [2018-11-28 13:05:44,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:44,347 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 479 transitions. [2018-11-28 13:05:44,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-11-28 13:05:44,347 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 479 transitions. [2018-11-28 13:05:44,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-11-28 13:05:44,348 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:44,348 INFO L402 BasicCegarLoop]: trace histogram [58, 57, 57, 33, 33, 33, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:44,348 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:44,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:44,348 INFO L82 PathProgramCache]: Analyzing trace with hash -2038554677, now seen corresponding path program 24 times [2018-11-28 13:05:44,348 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:44,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:44,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:44,349 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:44,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 8211 backedges. 3249 proven. 3234 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-11-28 13:05:44,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:44,698 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:44,706 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:05:44,758 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2018-11-28 13:05:44,758 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:44,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 8211 backedges. 3249 proven. 3234 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-11-28 13:05:44,819 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:44,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-11-28 13:05:44,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-11-28 13:05:44,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-11-28 13:05:44,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-11-28 13:05:44,820 INFO L87 Difference]: Start difference. First operand 461 states and 479 transitions. Second operand 36 states. [2018-11-28 13:05:44,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:44,888 INFO L93 Difference]: Finished difference Result 609 states and 627 transitions. [2018-11-28 13:05:44,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-28 13:05:44,888 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 352 [2018-11-28 13:05:44,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:44,889 INFO L225 Difference]: With dead ends: 609 [2018-11-28 13:05:44,889 INFO L226 Difference]: Without dead ends: 461 [2018-11-28 13:05:44,889 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 [2018-11-28 13:05:44,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-11-28 13:05:44,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-11-28 13:05:44,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-11-28 13:05:44,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 478 transitions. [2018-11-28 13:05:44,898 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 478 transitions. Word has length 352 [2018-11-28 13:05:44,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:44,899 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 478 transitions. [2018-11-28 13:05:44,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-11-28 13:05:44,899 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 478 transitions. [2018-11-28 13:05:44,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-11-28 13:05:44,900 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:44,900 INFO L402 BasicCegarLoop]: trace histogram [59, 58, 58, 34, 34, 34, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:44,900 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:44,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:44,900 INFO L82 PathProgramCache]: Analyzing trace with hash -2078251228, now seen corresponding path program 25 times [2018-11-28 13:05:44,900 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:44,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:44,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:44,901 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:44,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8508 backedges. 3346 proven. 3434 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-11-28 13:05:45,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:45,253 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:45,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:45,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 8508 backedges. 3346 proven. 3434 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-11-28 13:05:45,363 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:45,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-11-28 13:05:45,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-11-28 13:05:45,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-11-28 13:05:45,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-11-28 13:05:45,364 INFO L87 Difference]: Start difference. First operand 461 states and 478 transitions. Second operand 37 states. [2018-11-28 13:05:45,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:45,446 INFO L93 Difference]: Finished difference Result 609 states and 626 transitions. [2018-11-28 13:05:45,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-28 13:05:45,446 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 358 [2018-11-28 13:05:45,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:45,446 INFO L225 Difference]: With dead ends: 609 [2018-11-28 13:05:45,446 INFO L226 Difference]: Without dead ends: 461 [2018-11-28 13:05:45,447 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 [2018-11-28 13:05:45,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-11-28 13:05:45,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-11-28 13:05:45,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-11-28 13:05:45,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 477 transitions. [2018-11-28 13:05:45,456 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 477 transitions. Word has length 358 [2018-11-28 13:05:45,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:45,456 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 477 transitions. [2018-11-28 13:05:45,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-11-28 13:05:45,456 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 477 transitions. [2018-11-28 13:05:45,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-11-28 13:05:45,457 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:45,457 INFO L402 BasicCegarLoop]: trace histogram [60, 59, 59, 35, 35, 35, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:45,457 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:45,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:45,457 INFO L82 PathProgramCache]: Analyzing trace with hash 2126251965, now seen corresponding path program 26 times [2018-11-28 13:05:45,457 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:45,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:45,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:45,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:45,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:45,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8811 backedges. 3443 proven. 3640 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-11-28 13:05:45,832 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:45,832 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:45,840 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:05:45,870 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:05:45,870 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:45,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:45,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8811 backedges. 3443 proven. 3640 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-11-28 13:05:45,941 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:45,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-11-28 13:05:45,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-11-28 13:05:45,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-11-28 13:05:45,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-11-28 13:05:45,942 INFO L87 Difference]: Start difference. First operand 461 states and 477 transitions. Second operand 38 states. [2018-11-28 13:05:46,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:46,027 INFO L93 Difference]: Finished difference Result 609 states and 625 transitions. [2018-11-28 13:05:46,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-28 13:05:46,028 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 364 [2018-11-28 13:05:46,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:46,028 INFO L225 Difference]: With dead ends: 609 [2018-11-28 13:05:46,028 INFO L226 Difference]: Without dead ends: 461 [2018-11-28 13:05:46,029 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-11-28 13:05:46,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-11-28 13:05:46,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-11-28 13:05:46,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-11-28 13:05:46,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 476 transitions. [2018-11-28 13:05:46,040 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 476 transitions. Word has length 364 [2018-11-28 13:05:46,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:46,040 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 476 transitions. [2018-11-28 13:05:46,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-11-28 13:05:46,040 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 476 transitions. [2018-11-28 13:05:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-11-28 13:05:46,042 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:46,042 INFO L402 BasicCegarLoop]: trace histogram [61, 60, 60, 36, 36, 36, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:46,042 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:46,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:46,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1538855318, now seen corresponding path program 27 times [2018-11-28 13:05:46,042 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:46,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:46,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:46,043 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:46,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:46,448 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 3540 proven. 3852 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-11-28 13:05:46,449 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:46,449 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:46,457 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:05:46,498 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2018-11-28 13:05:46,498 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:46,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:47,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 3758 proven. 1928 refuted. 0 times theorem prover too weak. 3434 trivial. 0 not checked. [2018-11-28 13:05:47,157 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:47,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 28] total 66 [2018-11-28 13:05:47,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-11-28 13:05:47,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-11-28 13:05:47,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-11-28 13:05:47,158 INFO L87 Difference]: Start difference. First operand 461 states and 476 transitions. Second operand 66 states. [2018-11-28 13:05:47,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:47,349 INFO L93 Difference]: Finished difference Result 622 states and 639 transitions. [2018-11-28 13:05:47,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-11-28 13:05:47,349 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 370 [2018-11-28 13:05:47,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:47,350 INFO L225 Difference]: With dead ends: 622 [2018-11-28 13:05:47,350 INFO L226 Difference]: Without dead ends: 474 [2018-11-28 13:05:47,350 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 [2018-11-28 13:05:47,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2018-11-28 13:05:47,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 473. [2018-11-28 13:05:47,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-11-28 13:05:47,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 486 transitions. [2018-11-28 13:05:47,360 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 486 transitions. Word has length 370 [2018-11-28 13:05:47,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:47,360 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 486 transitions. [2018-11-28 13:05:47,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-11-28 13:05:47,360 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 486 transitions. [2018-11-28 13:05:47,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-11-28 13:05:47,361 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:47,361 INFO L402 BasicCegarLoop]: trace histogram [65, 64, 64, 38, 38, 38, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:47,361 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:47,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:47,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1801280018, now seen corresponding path program 28 times [2018-11-28 13:05:47,362 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:47,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:47,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:47,362 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:47,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 10364 backedges. 4042 proven. 4294 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-11-28 13:05:47,826 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:47,826 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:47,835 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:05:47,869 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:05:47,869 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:47,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:47,926 INFO L134 CoverageAnalysis]: Checked inductivity of 10364 backedges. 4042 proven. 4294 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-11-28 13:05:47,941 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:47,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-11-28 13:05:47,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-11-28 13:05:47,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-11-28 13:05:47,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-11-28 13:05:47,942 INFO L87 Difference]: Start difference. First operand 473 states and 486 transitions. Second operand 41 states. [2018-11-28 13:05:48,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:48,021 INFO L93 Difference]: Finished difference Result 633 states and 646 transitions. [2018-11-28 13:05:48,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-11-28 13:05:48,021 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 394 [2018-11-28 13:05:48,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:48,022 INFO L225 Difference]: With dead ends: 633 [2018-11-28 13:05:48,022 INFO L226 Difference]: Without dead ends: 473 [2018-11-28 13:05:48,022 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 [2018-11-28 13:05:48,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-11-28 13:05:48,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2018-11-28 13:05:48,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-11-28 13:05:48,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 485 transitions. [2018-11-28 13:05:48,032 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 485 transitions. Word has length 394 [2018-11-28 13:05:48,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:48,032 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 485 transitions. [2018-11-28 13:05:48,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-11-28 13:05:48,032 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 485 transitions. [2018-11-28 13:05:48,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-11-28 13:05:48,033 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:48,033 INFO L402 BasicCegarLoop]: trace histogram [66, 65, 65, 39, 39, 39, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:48,033 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:48,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:48,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1094430215, now seen corresponding path program 29 times [2018-11-28 13:05:48,034 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:48,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:48,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:48,034 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:48,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:48,482 INFO L134 CoverageAnalysis]: Checked inductivity of 10699 backedges. 4147 proven. 4524 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-11-28 13:05:48,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:48,483 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:48,490 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:05:48,554 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2018-11-28 13:05:48,554 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:48,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10699 backedges. 4147 proven. 4524 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-11-28 13:05:48,628 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:48,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-11-28 13:05:48,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-11-28 13:05:48,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-11-28 13:05:48,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-11-28 13:05:48,629 INFO L87 Difference]: Start difference. First operand 473 states and 485 transitions. Second operand 42 states. [2018-11-28 13:05:48,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:48,714 INFO L93 Difference]: Finished difference Result 633 states and 645 transitions. [2018-11-28 13:05:48,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-28 13:05:48,714 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 400 [2018-11-28 13:05:48,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:48,714 INFO L225 Difference]: With dead ends: 633 [2018-11-28 13:05:48,714 INFO L226 Difference]: Without dead ends: 473 [2018-11-28 13:05:48,715 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 [2018-11-28 13:05:48,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-11-28 13:05:48,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2018-11-28 13:05:48,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-11-28 13:05:48,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 484 transitions. [2018-11-28 13:05:48,725 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 484 transitions. Word has length 400 [2018-11-28 13:05:48,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:48,725 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 484 transitions. [2018-11-28 13:05:48,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-11-28 13:05:48,726 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 484 transitions. [2018-11-28 13:05:48,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-11-28 13:05:48,727 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:48,727 INFO L402 BasicCegarLoop]: trace histogram [67, 66, 66, 40, 40, 40, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:48,727 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:48,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:48,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1284866208, now seen corresponding path program 30 times [2018-11-28 13:05:48,727 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:48,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:48,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:48,728 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:48,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 11040 backedges. 4252 proven. 4760 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-11-28 13:05:49,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:49,191 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:49,198 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:05:49,261 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2018-11-28 13:05:49,262 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:49,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:49,323 INFO L134 CoverageAnalysis]: Checked inductivity of 11040 backedges. 4252 proven. 4760 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-11-28 13:05:49,337 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:49,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-11-28 13:05:49,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-11-28 13:05:49,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-11-28 13:05:49,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-11-28 13:05:49,338 INFO L87 Difference]: Start difference. First operand 473 states and 484 transitions. Second operand 43 states. [2018-11-28 13:05:49,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:49,417 INFO L93 Difference]: Finished difference Result 633 states and 644 transitions. [2018-11-28 13:05:49,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-11-28 13:05:49,418 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 406 [2018-11-28 13:05:49,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:49,418 INFO L225 Difference]: With dead ends: 633 [2018-11-28 13:05:49,418 INFO L226 Difference]: Without dead ends: 473 [2018-11-28 13:05:49,418 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 [2018-11-28 13:05:49,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-11-28 13:05:49,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2018-11-28 13:05:49,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-11-28 13:05:49,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 483 transitions. [2018-11-28 13:05:49,428 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 483 transitions. Word has length 406 [2018-11-28 13:05:49,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:49,428 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 483 transitions. [2018-11-28 13:05:49,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-11-28 13:05:49,428 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 483 transitions. [2018-11-28 13:05:49,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-11-28 13:05:49,429 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:49,429 INFO L402 BasicCegarLoop]: trace histogram [68, 67, 67, 41, 41, 41, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:49,430 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:49,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:49,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1518130695, now seen corresponding path program 31 times [2018-11-28 13:05:49,430 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:49,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:49,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:49,431 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:49,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:49,912 INFO L134 CoverageAnalysis]: Checked inductivity of 11387 backedges. 4357 proven. 5002 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-11-28 13:05:49,912 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:49,912 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:49,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:49,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 11387 backedges. 4357 proven. 5002 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-11-28 13:05:50,030 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:50,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-11-28 13:05:50,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-11-28 13:05:50,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-11-28 13:05:50,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-11-28 13:05:50,031 INFO L87 Difference]: Start difference. First operand 473 states and 483 transitions. Second operand 44 states. [2018-11-28 13:05:50,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:50,114 INFO L93 Difference]: Finished difference Result 633 states and 643 transitions. [2018-11-28 13:05:50,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-11-28 13:05:50,114 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 412 [2018-11-28 13:05:50,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:50,114 INFO L225 Difference]: With dead ends: 633 [2018-11-28 13:05:50,114 INFO L226 Difference]: Without dead ends: 473 [2018-11-28 13:05:50,115 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 [2018-11-28 13:05:50,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-11-28 13:05:50,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2018-11-28 13:05:50,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-11-28 13:05:50,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 482 transitions. [2018-11-28 13:05:50,124 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 482 transitions. Word has length 412 [2018-11-28 13:05:50,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:50,125 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 482 transitions. [2018-11-28 13:05:50,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-11-28 13:05:50,125 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 482 transitions. [2018-11-28 13:05:50,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-11-28 13:05:50,126 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:50,126 INFO L402 BasicCegarLoop]: trace histogram [69, 68, 68, 42, 42, 42, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:50,126 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:50,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:50,126 INFO L82 PathProgramCache]: Analyzing trace with hash 646823378, now seen corresponding path program 32 times [2018-11-28 13:05:50,126 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:50,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:50,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:50,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:50,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 11740 backedges. 4462 proven. 5250 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-11-28 13:05:50,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:50,665 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:50,672 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:05:50,706 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:05:50,706 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:50,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:50,790 INFO L134 CoverageAnalysis]: Checked inductivity of 11740 backedges. 4462 proven. 5250 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-11-28 13:05:50,805 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:50,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-11-28 13:05:50,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-11-28 13:05:50,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-11-28 13:05:50,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-11-28 13:05:50,806 INFO L87 Difference]: Start difference. First operand 473 states and 482 transitions. Second operand 45 states. [2018-11-28 13:05:50,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:50,899 INFO L93 Difference]: Finished difference Result 633 states and 642 transitions. [2018-11-28 13:05:50,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-11-28 13:05:50,900 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 418 [2018-11-28 13:05:50,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:50,900 INFO L225 Difference]: With dead ends: 633 [2018-11-28 13:05:50,900 INFO L226 Difference]: Without dead ends: 473 [2018-11-28 13:05:50,900 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 [2018-11-28 13:05:50,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-11-28 13:05:50,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2018-11-28 13:05:50,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-11-28 13:05:50,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 481 transitions. [2018-11-28 13:05:50,910 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 481 transitions. Word has length 418 [2018-11-28 13:05:50,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:50,910 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 481 transitions. [2018-11-28 13:05:50,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-11-28 13:05:50,910 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 481 transitions. [2018-11-28 13:05:50,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-11-28 13:05:50,911 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:50,912 INFO L402 BasicCegarLoop]: trace histogram [70, 69, 69, 43, 43, 43, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:50,912 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:50,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:50,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1128680171, now seen corresponding path program 33 times [2018-11-28 13:05:50,912 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:50,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:50,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:50,912 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:50,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12099 backedges. 4567 proven. 5504 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-11-28 13:05:51,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:51,435 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:51,443 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:05:51,490 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-11-28 13:05:51,490 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:51,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:52,258 INFO L134 CoverageAnalysis]: Checked inductivity of 12099 backedges. 4716 proven. 2133 refuted. 0 times theorem prover too weak. 5250 trivial. 0 not checked. [2018-11-28 13:05:52,273 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:52,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 29] total 74 [2018-11-28 13:05:52,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-11-28 13:05:52,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-11-28 13:05:52,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-11-28 13:05:52,274 INFO L87 Difference]: Start difference. First operand 473 states and 481 transitions. Second operand 74 states. [2018-11-28 13:05:52,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:52,507 INFO L93 Difference]: Finished difference Result 640 states and 649 transitions. [2018-11-28 13:05:52,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-11-28 13:05:52,507 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 424 [2018-11-28 13:05:52,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:52,507 INFO L225 Difference]: With dead ends: 640 [2018-11-28 13:05:52,507 INFO L226 Difference]: Without dead ends: 480 [2018-11-28 13:05:52,508 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 [2018-11-28 13:05:52,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-11-28 13:05:52,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2018-11-28 13:05:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-11-28 13:05:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 485 transitions. [2018-11-28 13:05:52,518 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 485 transitions. Word has length 424 [2018-11-28 13:05:52,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:52,518 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 485 transitions. [2018-11-28 13:05:52,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-11-28 13:05:52,518 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 485 transitions. [2018-11-28 13:05:52,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-11-28 13:05:52,519 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:52,519 INFO L402 BasicCegarLoop]: trace histogram [73, 72, 72, 45, 45, 45, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:52,519 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:52,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:52,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1209580720, now seen corresponding path program 34 times [2018-11-28 13:05:52,520 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:52,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:52,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:52,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:52,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:53,084 INFO L134 CoverageAnalysis]: Checked inductivity of 13176 backedges. 4959 proven. 6030 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-11-28 13:05:53,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:53,084 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:53,093 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:05:53,138 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:05:53,139 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:53,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 13176 backedges. 4959 proven. 6030 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-11-28 13:05:53,226 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:53,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-11-28 13:05:53,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-11-28 13:05:53,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-11-28 13:05:53,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-11-28 13:05:53,228 INFO L87 Difference]: Start difference. First operand 479 states and 485 transitions. Second operand 48 states. [2018-11-28 13:05:53,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:53,318 INFO L93 Difference]: Finished difference Result 645 states and 651 transitions. [2018-11-28 13:05:53,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-28 13:05:53,319 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 442 [2018-11-28 13:05:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:53,319 INFO L225 Difference]: With dead ends: 645 [2018-11-28 13:05:53,319 INFO L226 Difference]: Without dead ends: 479 [2018-11-28 13:05:53,320 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-11-28 13:05:53,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-11-28 13:05:53,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-11-28 13:05:53,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-11-28 13:05:53,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 484 transitions. [2018-11-28 13:05:53,330 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 484 transitions. Word has length 442 [2018-11-28 13:05:53,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:53,330 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 484 transitions. [2018-11-28 13:05:53,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-11-28 13:05:53,330 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 484 transitions. [2018-11-28 13:05:53,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-11-28 13:05:53,331 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:53,331 INFO L402 BasicCegarLoop]: trace histogram [74, 73, 73, 46, 46, 46, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:53,331 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:53,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:53,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1072811721, now seen corresponding path program 35 times [2018-11-28 13:05:53,331 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:53,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:53,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:53,332 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:53,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:53,935 INFO L134 CoverageAnalysis]: Checked inductivity of 13557 backedges. 5068 proven. 6302 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-11-28 13:05:53,936 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:53,936 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:53,942 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:05:54,020 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-11-28 13:05:54,021 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:54,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:54,095 INFO L134 CoverageAnalysis]: Checked inductivity of 13557 backedges. 5068 proven. 6302 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-11-28 13:05:54,109 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:54,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-11-28 13:05:54,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-11-28 13:05:54,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-11-28 13:05:54,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-11-28 13:05:54,110 INFO L87 Difference]: Start difference. First operand 479 states and 484 transitions. Second operand 49 states. [2018-11-28 13:05:54,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:54,213 INFO L93 Difference]: Finished difference Result 645 states and 650 transitions. [2018-11-28 13:05:54,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-28 13:05:54,213 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 448 [2018-11-28 13:05:54,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:54,214 INFO L225 Difference]: With dead ends: 645 [2018-11-28 13:05:54,214 INFO L226 Difference]: Without dead ends: 479 [2018-11-28 13:05:54,214 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-11-28 13:05:54,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-11-28 13:05:54,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-11-28 13:05:54,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-11-28 13:05:54,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 483 transitions. [2018-11-28 13:05:54,227 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 483 transitions. Word has length 448 [2018-11-28 13:05:54,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:54,227 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 483 transitions. [2018-11-28 13:05:54,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-11-28 13:05:54,227 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 483 transitions. [2018-11-28 13:05:54,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-11-28 13:05:54,229 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:54,229 INFO L402 BasicCegarLoop]: trace histogram [75, 74, 74, 47, 47, 47, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:54,229 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:54,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:54,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1951323614, now seen corresponding path program 36 times [2018-11-28 13:05:54,229 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:54,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:54,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:54,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:54,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:54,846 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 5177 proven. 6580 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-11-28 13:05:54,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:54,846 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:54,855 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:05:54,932 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-11-28 13:05:54,932 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:54,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 5177 proven. 6580 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-11-28 13:05:55,024 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:55,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-11-28 13:05:55,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-11-28 13:05:55,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-11-28 13:05:55,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-11-28 13:05:55,025 INFO L87 Difference]: Start difference. First operand 479 states and 483 transitions. Second operand 50 states. [2018-11-28 13:05:55,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:55,146 INFO L93 Difference]: Finished difference Result 645 states and 649 transitions. [2018-11-28 13:05:55,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-11-28 13:05:55,146 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 454 [2018-11-28 13:05:55,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:55,147 INFO L225 Difference]: With dead ends: 645 [2018-11-28 13:05:55,147 INFO L226 Difference]: Without dead ends: 479 [2018-11-28 13:05:55,148 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 [2018-11-28 13:05:55,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-11-28 13:05:55,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-11-28 13:05:55,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-11-28 13:05:55,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 482 transitions. [2018-11-28 13:05:55,160 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 482 transitions. Word has length 454 [2018-11-28 13:05:55,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:55,160 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 482 transitions. [2018-11-28 13:05:55,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-11-28 13:05:55,160 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 482 transitions. [2018-11-28 13:05:55,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-11-28 13:05:55,162 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:55,162 INFO L402 BasicCegarLoop]: trace histogram [76, 75, 75, 48, 48, 48, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:55,162 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:55,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:55,163 INFO L82 PathProgramCache]: Analyzing trace with hash 122347195, now seen corresponding path program 37 times [2018-11-28 13:05:55,163 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:55,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:55,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:55,163 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:55,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 14337 backedges. 5286 proven. 6864 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-11-28 13:05:55,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:55,805 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:55,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:55,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:55,929 INFO L134 CoverageAnalysis]: Checked inductivity of 14337 backedges. 5286 proven. 6864 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-11-28 13:05:55,944 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:55,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-11-28 13:05:55,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-11-28 13:05:55,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-11-28 13:05:55,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-11-28 13:05:55,945 INFO L87 Difference]: Start difference. First operand 479 states and 482 transitions. Second operand 51 states. [2018-11-28 13:05:56,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:56,049 INFO L93 Difference]: Finished difference Result 645 states and 648 transitions. [2018-11-28 13:05:56,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-11-28 13:05:56,049 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 460 [2018-11-28 13:05:56,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:56,050 INFO L225 Difference]: With dead ends: 645 [2018-11-28 13:05:56,050 INFO L226 Difference]: Without dead ends: 479 [2018-11-28 13:05:56,050 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 [2018-11-28 13:05:56,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-11-28 13:05:56,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-11-28 13:05:56,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-11-28 13:05:56,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 481 transitions. [2018-11-28 13:05:56,063 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 481 transitions. Word has length 460 [2018-11-28 13:05:56,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:56,063 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 481 transitions. [2018-11-28 13:05:56,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-11-28 13:05:56,063 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 481 transitions. [2018-11-28 13:05:56,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-11-28 13:05:56,065 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:56,065 INFO L402 BasicCegarLoop]: trace histogram [77, 76, 76, 49, 49, 49, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:56,065 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:56,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:56,066 INFO L82 PathProgramCache]: Analyzing trace with hash 728169620, now seen corresponding path program 38 times [2018-11-28 13:05:56,066 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:56,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:56,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:56,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:05:56,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 14736 backedges. 5395 proven. 7154 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-11-28 13:05:56,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:56,736 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:56,744 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:05:56,783 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:05:56,783 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:56,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 14736 backedges. 5395 proven. 7154 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-11-28 13:05:56,893 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:56,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-11-28 13:05:56,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-11-28 13:05:56,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-11-28 13:05:56,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-11-28 13:05:56,894 INFO L87 Difference]: Start difference. First operand 479 states and 481 transitions. Second operand 52 states. [2018-11-28 13:05:56,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:56,999 INFO L93 Difference]: Finished difference Result 645 states and 647 transitions. [2018-11-28 13:05:56,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-11-28 13:05:57,000 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 466 [2018-11-28 13:05:57,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:57,000 INFO L225 Difference]: With dead ends: 645 [2018-11-28 13:05:57,000 INFO L226 Difference]: Without dead ends: 479 [2018-11-28 13:05:57,001 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 [2018-11-28 13:05:57,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-11-28 13:05:57,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-11-28 13:05:57,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-11-28 13:05:57,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 480 transitions. [2018-11-28 13:05:57,014 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 480 transitions. Word has length 466 [2018-11-28 13:05:57,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:57,014 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 480 transitions. [2018-11-28 13:05:57,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-11-28 13:05:57,014 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 480 transitions. [2018-11-28 13:05:57,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-11-28 13:05:57,016 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:57,016 INFO L402 BasicCegarLoop]: trace histogram [78, 77, 77, 50, 50, 50, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:57,016 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:57,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:57,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1235119187, now seen corresponding path program 39 times [2018-11-28 13:05:57,017 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:57,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:57,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:57,017 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:57,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:57,706 INFO L134 CoverageAnalysis]: Checked inductivity of 15141 backedges. 5504 proven. 7450 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-11-28 13:05:57,706 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:57,707 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:57,714 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:05:57,773 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2018-11-28 13:05:57,773 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:57,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:05:58,673 INFO L134 CoverageAnalysis]: Checked inductivity of 15141 backedges. 5866 proven. 2411 refuted. 0 times theorem prover too weak. 6864 trivial. 0 not checked. [2018-11-28 13:05:58,687 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:05:58,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 31] total 82 [2018-11-28 13:05:58,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-11-28 13:05:58,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-11-28 13:05:58,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-11-28 13:05:58,689 INFO L87 Difference]: Start difference. First operand 479 states and 480 transitions. Second operand 82 states. [2018-11-28 13:05:58,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:05:58,948 INFO L93 Difference]: Finished difference Result 658 states and 661 transitions. [2018-11-28 13:05:58,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-11-28 13:05:58,948 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 472 [2018-11-28 13:05:58,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:05:58,949 INFO L225 Difference]: With dead ends: 658 [2018-11-28 13:05:58,949 INFO L226 Difference]: Without dead ends: 492 [2018-11-28 13:05:58,950 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 [2018-11-28 13:05:58,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2018-11-28 13:05:58,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2018-11-28 13:05:58,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2018-11-28 13:05:58,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 491 transitions. [2018-11-28 13:05:58,961 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 491 transitions. Word has length 472 [2018-11-28 13:05:58,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:05:58,961 INFO L480 AbstractCegarLoop]: Abstraction has 491 states and 491 transitions. [2018-11-28 13:05:58,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-11-28 13:05:58,961 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 491 transitions. [2018-11-28 13:05:58,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-11-28 13:05:58,962 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:05:58,962 INFO L402 BasicCegarLoop]: trace histogram [81, 80, 80, 51, 51, 51, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-11-28 13:05:58,963 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:05:58,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:05:58,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1075368980, now seen corresponding path program 40 times [2018-11-28 13:05:58,963 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:05:58,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:05:58,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:58,963 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:05:58,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:05:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:05:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 16300 backedges. 6693 proven. 3027 refuted. 0 times theorem prover too weak. 6580 trivial. 0 not checked. [2018-11-28 13:05:59,343 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:05:59,343 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:05:59,352 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:05:59,393 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:05:59,393 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:05:59,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:06:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 16300 backedges. 160 proven. 16140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:06:00,747 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:06:00,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 82] total 82 [2018-11-28 13:06:00,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-11-28 13:06:00,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-11-28 13:06:00,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-11-28 13:06:00,749 INFO L87 Difference]: Start difference. First operand 491 states and 491 transitions. Second operand 83 states. [2018-11-28 13:06:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:06:01,031 INFO L93 Difference]: Finished difference Result 799 states and 849 transitions. [2018-11-28 13:06:01,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-11-28 13:06:01,031 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 490 [2018-11-28 13:06:01,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:06:01,032 INFO L225 Difference]: With dead ends: 799 [2018-11-28 13:06:01,032 INFO L226 Difference]: Without dead ends: 798 [2018-11-28 13:06:01,032 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-11-28 13:06:01,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2018-11-28 13:06:01,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 797. [2018-11-28 13:06:01,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2018-11-28 13:06:01,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 797 transitions. [2018-11-28 13:06:01,065 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 797 transitions. Word has length 490 [2018-11-28 13:06:01,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:06:01,065 INFO L480 AbstractCegarLoop]: Abstraction has 797 states and 797 transitions. [2018-11-28 13:06:01,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-11-28 13:06:01,066 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 797 transitions. [2018-11-28 13:06:01,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2018-11-28 13:06:01,068 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:06:01,068 INFO L402 BasicCegarLoop]: trace histogram [132, 131, 131, 81, 81, 81, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-11-28 13:06:01,068 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:06:01,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:06:01,069 INFO L82 PathProgramCache]: Analyzing trace with hash -720631691, now seen corresponding path program 41 times [2018-11-28 13:06:01,069 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:06:01,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:06:01,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:06:01,069 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:06:01,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:06:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:06:02,276 INFO L134 CoverageAnalysis]: Checked inductivity of 43483 backedges. 30529 proven. 12752 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2018-11-28 13:06:02,276 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:06:02,276 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/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 [2018-11-28 13:06:02,285 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:06:02,479 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2018-11-28 13:06:02,479 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:06:02,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:06:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 43483 backedges. 30525 proven. 12752 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2018-11-28 13:06:02,787 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:06:02,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 83 [2018-11-28 13:06:02,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-11-28 13:06:02,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-11-28 13:06:02,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-11-28 13:06:02,788 INFO L87 Difference]: Start difference. First operand 797 states and 797 transitions. Second operand 83 states. [2018-11-28 13:06:03,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:06:03,161 INFO L93 Difference]: Finished difference Result 797 states and 797 transitions. [2018-11-28 13:06:03,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-11-28 13:06:03,161 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 796 [2018-11-28 13:06:03,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:06:03,162 INFO L225 Difference]: With dead ends: 797 [2018-11-28 13:06:03,162 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 13:06:03,163 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 [2018-11-28 13:06:03,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 13:06:03,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 13:06:03,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 13:06:03,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 13:06:03,163 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 796 [2018-11-28 13:06:03,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:06:03,163 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:06:03,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-11-28 13:06:03,164 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 13:06:03,164 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 13:06:03,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 13:06:03,545 WARN L180 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 982 DAG size of output: 455 [2018-11-28 13:06:05,287 WARN L180 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 451 DAG size of output: 400 [2018-11-28 13:06:05,292 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 13:06:05,292 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 13:06:05,292 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 13:06:05,292 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 13:06:05,292 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 13:06:05,292 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 13:06:05,292 INFO L448 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-28 13:06:05,292 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 14 27) no Hoare annotation was computed. [2018-11-28 13:06:05,293 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-28 13:06:05,293 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-28 13:06:05,293 INFO L448 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2018-11-28 13:06:05,293 INFO L448 ceAbstractionStarter]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2018-11-28 13:06:05,293 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 14 27) no Hoare annotation was computed. [2018-11-28 13:06:05,293 INFO L448 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-28 13:06:05,293 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 14 27) the Hoare annotation is: true [2018-11-28 13:06:05,293 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-28 13:06:05,293 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-28 13:06:05,293 INFO L448 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-28 13:06:05,293 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-28 13:06:05,293 INFO L448 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-28 13:06:05,293 INFO L448 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-28 13:06:05,294 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-28 13:06:05,295 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)))) [2018-11-28 13:06:05,295 INFO L448 ceAbstractionStarter]: For program point L18-3(lines 18 25) no Hoare annotation was computed. [2018-11-28 13:06:05,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 01:06:05 BoogieIcfgContainer [2018-11-28 13:06:05,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 13:06:05,331 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:06:05,331 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:06:05,332 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:06:05,332 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:04:57" (3/4) ... [2018-11-28 13:06:05,336 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 13:06:05,345 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 13:06:05,345 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 13:06:05,348 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 13:06:05,349 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-28 13:06:05,349 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 13:06:05,382 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_879c62e2-76f1-4c82-a0b0-a5589bd1b238/bin-2019/uautomizer/witness.graphml [2018-11-28 13:06:05,382 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:06:05,383 INFO L168 Benchmark]: Toolchain (without parser) took 67909.44 ms. Allocated memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: 1.4 GB). Free memory was 958.7 MB in the beginning and 1.8 GB in the end (delta: -889.4 MB). Peak memory consumption was 472.2 MB. Max. memory is 11.5 GB. [2018-11-28 13:06:05,383 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:06:05,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 131.31 ms. Allocated memory is still 1.0 GB. Free memory was 958.7 MB in the beginning and 950.5 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. [2018-11-28 13:06:05,384 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.43 ms. Allocated memory is still 1.0 GB. Free memory is still 947.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:06:05,384 INFO L168 Benchmark]: Boogie Preprocessor took 13.92 ms. Allocated memory is still 1.0 GB. Free memory is still 947.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:06:05,384 INFO L168 Benchmark]: RCFGBuilder took 196.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 947.8 MB in the beginning and 1.1 GB in the end (delta: -171.7 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-11-28 13:06:05,384 INFO L168 Benchmark]: TraceAbstraction took 67500.28 ms. Allocated memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: 1.2 GB). Free memory was 1.1 GB in the beginning and 1.9 GB in the end (delta: -758.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 11.5 GB. [2018-11-28 13:06:05,385 INFO L168 Benchmark]: Witness Printer took 51.07 ms. Allocated memory is still 2.4 GB. Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 11.5 GB. [2018-11-28 13:06:05,397 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 131.31 ms. Allocated memory is still 1.0 GB. Free memory was 958.7 MB in the beginning and 950.5 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.43 ms. Allocated memory is still 1.0 GB. Free memory is still 947.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.92 ms. Allocated memory is still 1.0 GB. Free memory is still 947.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 196.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 947.8 MB in the beginning and 1.1 GB in the end (delta: -171.7 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 67500.28 ms. Allocated memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: 1.2 GB). Free memory was 1.1 GB in the beginning and 1.9 GB in the end (delta: -758.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 11.5 GB. * Witness Printer took 51.07 ms. Allocated memory is still 2.4 GB. Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 24]: 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: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - 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, 67.4s OverallTime, 98 OverallIterations, 132 TraceHistogramMax, 17.5s AutomataDifference, 0.0s DeadEndRemovalTime, 2.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 2428 SDtfs, 15784 SDslu, 19119 SDs, 0 SdLazy, 27994 SolverSat, 3230 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23612 GetRequests, 20525 SyntacticMatches, 0 SemanticMatches, 3087 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20928 ImplicationChecksByTransitivity, 32.6s 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: 3.2s 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, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 35.5s 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...