./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.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 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 0.1.23-1dbac8b [2018-11-10 04:51:03,092 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 04:51:03,093 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 04:51:03,102 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 04:51:03,102 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 04:51:03,103 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 04:51:03,103 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 04:51:03,105 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 04:51:03,106 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 04:51:03,106 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 04:51:03,107 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 04:51:03,107 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 04:51:03,108 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 04:51:03,108 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 04:51:03,109 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 04:51:03,109 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 04:51:03,110 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 04:51:03,111 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 04:51:03,112 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 04:51:03,113 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 04:51:03,114 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 04:51:03,115 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 04:51:03,116 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 04:51:03,116 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 04:51:03,116 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 04:51:03,117 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 04:51:03,118 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 04:51:03,118 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 04:51:03,119 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 04:51:03,119 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 04:51:03,119 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 04:51:03,120 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 04:51:03,120 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 04:51:03,120 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 04:51:03,121 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 04:51:03,121 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 04:51:03,121 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-10 04:51:03,130 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 04:51:03,131 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 04:51:03,131 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 04:51:03,131 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 04:51:03,132 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 04:51:03,132 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 04:51:03,132 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 04:51:03,132 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 04:51:03,132 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 04:51:03,132 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 04:51:03,133 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 04:51:03,133 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 04:51:03,133 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 04:51:03,133 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 04:51:03,133 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 04:51:03,133 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 04:51:03,133 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 04:51:03,133 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 04:51:03,134 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 04:51:03,134 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 04:51:03,134 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 04:51:03,134 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:51:03,134 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 04:51:03,134 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 04:51:03,134 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 04:51:03,134 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 04:51:03,135 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 04:51:03,135 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 04:51:03,135 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_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:03,157 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 04:51:03,167 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 04:51:03,169 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 04:51:03,170 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 04:51:03,171 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 04:51:03,171 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-11-10 04:51:03,217 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/bin-2019/uautomizer/data/b8f434aba/82ec00d5cd6e4163ad20c5f88d8982a0/FLAG581b7fc20 [2018-11-10 04:51:03,568 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 04:51:03,568 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-11-10 04:51:03,573 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/bin-2019/uautomizer/data/b8f434aba/82ec00d5cd6e4163ad20c5f88d8982a0/FLAG581b7fc20 [2018-11-10 04:51:03,583 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/bin-2019/uautomizer/data/b8f434aba/82ec00d5cd6e4163ad20c5f88d8982a0 [2018-11-10 04:51:03,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 04:51:03,586 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 04:51:03,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 04:51:03,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 04:51:03,591 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 04:51:03,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:51:03" (1/1) ... [2018-11-10 04:51:03,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@606eadf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:51:03, skipping insertion in model container [2018-11-10 04:51:03,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:51:03" (1/1) ... [2018-11-10 04:51:03,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 04:51:03,617 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 04:51:03,710 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:51:03,714 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 04:51:03,722 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:51:03,730 INFO L193 MainTranslator]: Completed translation [2018-11-10 04:51:03,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:51:03 WrapperNode [2018-11-10 04:51:03,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 04:51:03,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 04:51:03,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 04:51:03,731 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 04:51:03,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:51:03" (1/1) ... [2018-11-10 04:51:03,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:51:03" (1/1) ... [2018-11-10 04:51:03,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:51:03" (1/1) ... [2018-11-10 04:51:03,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:51:03" (1/1) ... [2018-11-10 04:51:03,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:51:03" (1/1) ... [2018-11-10 04:51:03,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:51:03" (1/1) ... [2018-11-10 04:51:03,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:51:03" (1/1) ... [2018-11-10 04:51:03,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 04:51:03,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 04:51:03,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 04:51:03,749 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 04:51:03,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:51:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:03,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 04:51:03,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 04:51:03,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 04:51:03,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 04:51:03,834 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 04:51:03,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 04:51:03,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 04:51:03,952 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 04:51:03,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:51:03 BoogieIcfgContainer [2018-11-10 04:51:03,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 04:51:03,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 04:51:03,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 04:51:03,956 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 04:51:03,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 04:51:03" (1/3) ... [2018-11-10 04:51:03,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f43d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:51:03, skipping insertion in model container [2018-11-10 04:51:03,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:51:03" (2/3) ... [2018-11-10 04:51:03,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f43d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:51:03, skipping insertion in model container [2018-11-10 04:51:03,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:51:03" (3/3) ... [2018-11-10 04:51:03,959 INFO L112 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-11-10 04:51:03,968 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 04:51:03,975 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-10 04:51:03,991 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-10 04:51:04,019 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 04:51:04,020 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 04:51:04,020 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 04:51:04,020 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 04:51:04,020 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 04:51:04,020 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 04:51:04,021 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 04:51:04,021 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 04:51:04,021 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 04:51:04,036 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-11-10 04:51:04,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 04:51:04,041 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:04,042 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:04,043 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:04,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:04,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1241711279, now seen corresponding path program 1 times [2018-11-10 04:51:04,050 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:04,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:04,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:04,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:04,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:51:04,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 04:51:04,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 04:51:04,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 04:51:04,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:51:04,153 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2018-11-10 04:51:04,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:04,210 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2018-11-10 04:51:04,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 04:51:04,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-10 04:51:04,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:04,218 INFO L225 Difference]: With dead ends: 43 [2018-11-10 04:51:04,219 INFO L226 Difference]: Without dead ends: 31 [2018-11-10 04:51:04,221 INFO L605 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 [2018-11-10 04:51:04,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-10 04:51:04,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2018-11-10 04:51:04,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-10 04:51:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2018-11-10 04:51:04,245 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 9 [2018-11-10 04:51:04,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:04,245 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2018-11-10 04:51:04,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 04:51:04,246 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2018-11-10 04:51:04,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 04:51:04,246 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:04,246 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:04,247 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:04,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:04,247 INFO L82 PathProgramCache]: Analyzing trace with hash -161655964, now seen corresponding path program 1 times [2018-11-10 04:51:04,247 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:04,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:04,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:04,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:04,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:04,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:51:04,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 04:51:04,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 04:51:04,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 04:51:04,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:51:04,263 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 3 states. [2018-11-10 04:51:04,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:04,276 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2018-11-10 04:51:04,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 04:51:04,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-10 04:51:04,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:04,277 INFO L225 Difference]: With dead ends: 36 [2018-11-10 04:51:04,277 INFO L226 Difference]: Without dead ends: 34 [2018-11-10 04:51:04,278 INFO L605 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 [2018-11-10 04:51:04,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-10 04:51:04,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2018-11-10 04:51:04,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-10 04:51:04,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-11-10 04:51:04,282 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 10 [2018-11-10 04:51:04,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:04,282 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-11-10 04:51:04,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 04:51:04,283 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-11-10 04:51:04,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 04:51:04,283 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:04,283 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:04,284 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:04,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:04,284 INFO L82 PathProgramCache]: Analyzing trace with hash -716367528, now seen corresponding path program 1 times [2018-11-10 04:51:04,284 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:04,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:04,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:04,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:04,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:04,301 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:51:04,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 04:51:04,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 04:51:04,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 04:51:04,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:51:04,302 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 3 states. [2018-11-10 04:51:04,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:04,320 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-11-10 04:51:04,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 04:51:04,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-10 04:51:04,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:04,321 INFO L225 Difference]: With dead ends: 46 [2018-11-10 04:51:04,321 INFO L226 Difference]: Without dead ends: 25 [2018-11-10 04:51:04,321 INFO L605 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 [2018-11-10 04:51:04,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-10 04:51:04,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-11-10 04:51:04,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-10 04:51:04,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-11-10 04:51:04,325 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2018-11-10 04:51:04,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:04,325 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-11-10 04:51:04,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 04:51:04,326 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-11-10 04:51:04,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 04:51:04,326 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:04,326 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:04,327 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:04,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:04,327 INFO L82 PathProgramCache]: Analyzing trace with hash -732556826, now seen corresponding path program 1 times [2018-11-10 04:51:04,327 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:04,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:04,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:04,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:04,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:51:04,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 04:51:04,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 04:51:04,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 04:51:04,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:51:04,349 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 3 states. [2018-11-10 04:51:04,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:04,361 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-11-10 04:51:04,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 04:51:04,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-10 04:51:04,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:04,363 INFO L225 Difference]: With dead ends: 24 [2018-11-10 04:51:04,364 INFO L226 Difference]: Without dead ends: 23 [2018-11-10 04:51:04,364 INFO L605 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 [2018-11-10 04:51:04,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-10 04:51:04,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-10 04:51:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-10 04:51:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-11-10 04:51:04,367 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 12 [2018-11-10 04:51:04,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:04,367 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-11-10 04:51:04,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 04:51:04,368 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-11-10 04:51:04,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 04:51:04,368 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:04,368 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:04,369 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:04,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:04,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1247764466, now seen corresponding path program 1 times [2018-11-10 04:51:04,369 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:04,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:04,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:04,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:04,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:04,405 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:04,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:04,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:04,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:04,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-11-10 04:51:04,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 04:51:04,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 04:51:04,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 04:51:04,462 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 4 states. [2018-11-10 04:51:04,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:04,519 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2018-11-10 04:51:04,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 04:51:04,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-10 04:51:04,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:04,520 INFO L225 Difference]: With dead ends: 45 [2018-11-10 04:51:04,520 INFO L226 Difference]: Without dead ends: 43 [2018-11-10 04:51:04,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 04:51:04,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-10 04:51:04,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2018-11-10 04:51:04,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-10 04:51:04,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-11-10 04:51:04,525 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 16 [2018-11-10 04:51:04,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:04,526 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-11-10 04:51:04,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 04:51:04,526 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-11-10 04:51:04,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-10 04:51:04,526 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:04,526 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:04,527 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:04,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:04,527 INFO L82 PathProgramCache]: Analyzing trace with hash -805774601, now seen corresponding path program 1 times [2018-11-10 04:51:04,527 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:04,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:04,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:04,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 04:51:04,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:51:04,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 04:51:04,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 04:51:04,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 04:51:04,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:51:04,547 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 3 states. [2018-11-10 04:51:04,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:04,568 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2018-11-10 04:51:04,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 04:51:04,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-10 04:51:04,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:04,570 INFO L225 Difference]: With dead ends: 41 [2018-11-10 04:51:04,570 INFO L226 Difference]: Without dead ends: 40 [2018-11-10 04:51:04,570 INFO L605 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 [2018-11-10 04:51:04,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-10 04:51:04,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2018-11-10 04:51:04,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-10 04:51:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-11-10 04:51:04,574 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 18 [2018-11-10 04:51:04,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:04,574 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-11-10 04:51:04,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 04:51:04,574 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-11-10 04:51:04,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-10 04:51:04,575 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:04,575 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:04,577 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:04,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:04,577 INFO L82 PathProgramCache]: Analyzing trace with hash -805589903, now seen corresponding path program 1 times [2018-11-10 04:51:04,577 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:04,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:04,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:04,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:04,613 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:04,613 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:04,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:04,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:04,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:04,672 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:04,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-11-10 04:51:04,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 04:51:04,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 04:51:04,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-10 04:51:04,673 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 6 states. [2018-11-10 04:51:04,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:04,699 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2018-11-10 04:51:04,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 04:51:04,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-11-10 04:51:04,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:04,699 INFO L225 Difference]: With dead ends: 72 [2018-11-10 04:51:04,699 INFO L226 Difference]: Without dead ends: 44 [2018-11-10 04:51:04,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-10 04:51:04,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-10 04:51:04,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2018-11-10 04:51:04,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-10 04:51:04,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2018-11-10 04:51:04,704 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 18 [2018-11-10 04:51:04,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:04,704 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2018-11-10 04:51:04,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 04:51:04,705 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2018-11-10 04:51:04,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-10 04:51:04,705 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:04,705 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:04,705 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:04,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:04,706 INFO L82 PathProgramCache]: Analyzing trace with hash 343411151, now seen corresponding path program 2 times [2018-11-10 04:51:04,706 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:04,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:04,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:04,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:04,740 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:04,741 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:04,741 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:04,747 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:51:04,761 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:51:04,762 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:04,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:04,767 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:04,787 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:04,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-10 04:51:04,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 04:51:04,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 04:51:04,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-10 04:51:04,788 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 5 states. [2018-11-10 04:51:04,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:04,819 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-11-10 04:51:04,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 04:51:04,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-11-10 04:51:04,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:04,820 INFO L225 Difference]: With dead ends: 45 [2018-11-10 04:51:04,820 INFO L226 Difference]: Without dead ends: 44 [2018-11-10 04:51:04,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-10 04:51:04,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-10 04:51:04,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-11-10 04:51:04,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-10 04:51:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2018-11-10 04:51:04,824 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 23 [2018-11-10 04:51:04,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:04,825 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2018-11-10 04:51:04,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 04:51:04,825 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2018-11-10 04:51:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-10 04:51:04,825 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:04,825 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:04,826 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:04,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:04,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1374377198, now seen corresponding path program 3 times [2018-11-10 04:51:04,826 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:04,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:04,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,827 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:04,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:04,868 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:04,868 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:04,868 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:04,874 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 04:51:04,881 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-10 04:51:04,881 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:04,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:04,905 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:04,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-10 04:51:04,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 04:51:04,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 04:51:04,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-10 04:51:04,905 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 6 states. [2018-11-10 04:51:04,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:04,936 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2018-11-10 04:51:04,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 04:51:04,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-11-10 04:51:04,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:04,937 INFO L225 Difference]: With dead ends: 99 [2018-11-10 04:51:04,937 INFO L226 Difference]: Without dead ends: 97 [2018-11-10 04:51:04,938 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-10 04:51:04,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-11-10 04:51:04,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2018-11-10 04:51:04,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-11-10 04:51:04,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2018-11-10 04:51:04,945 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 30 [2018-11-10 04:51:04,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:04,945 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2018-11-10 04:51:04,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 04:51:04,945 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2018-11-10 04:51:04,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-10 04:51:04,946 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:04,946 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:04,946 INFO L424 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:04,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:04,947 INFO L82 PathProgramCache]: Analyzing trace with hash 696391919, now seen corresponding path program 4 times [2018-11-10 04:51:04,947 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:04,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:04,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,950 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:04,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:04,998 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:04,998 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:04,998 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:05,004 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:51:05,031 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:51:05,031 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:05,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:05,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:05,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-10 04:51:05,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 04:51:05,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 04:51:05,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-10 04:51:05,056 INFO L87 Difference]: Start difference. First operand 91 states and 102 transitions. Second operand 7 states. [2018-11-10 04:51:05,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:05,106 INFO L93 Difference]: Finished difference Result 167 states and 197 transitions. [2018-11-10 04:51:05,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 04:51:05,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2018-11-10 04:51:05,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:05,108 INFO L225 Difference]: With dead ends: 167 [2018-11-10 04:51:05,108 INFO L226 Difference]: Without dead ends: 165 [2018-11-10 04:51:05,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-10 04:51:05,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-11-10 04:51:05,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 108. [2018-11-10 04:51:05,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-11-10 04:51:05,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2018-11-10 04:51:05,115 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 37 [2018-11-10 04:51:05,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:05,116 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2018-11-10 04:51:05,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 04:51:05,116 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2018-11-10 04:51:05,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-10 04:51:05,117 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:05,117 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:05,117 INFO L424 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:05,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:05,118 INFO L82 PathProgramCache]: Analyzing trace with hash -2112757160, now seen corresponding path program 2 times [2018-11-10 04:51:05,118 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:05,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:05,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:05,119 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:05,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:05,166 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 04:51:05,166 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:05,166 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:05,188 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:51:05,196 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:51:05,196 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:05,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 04:51:05,231 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:05,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-10 04:51:05,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 04:51:05,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 04:51:05,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-10 04:51:05,233 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand 6 states. [2018-11-10 04:51:05,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:05,264 INFO L93 Difference]: Finished difference Result 205 states and 234 transitions. [2018-11-10 04:51:05,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 04:51:05,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2018-11-10 04:51:05,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:05,267 INFO L225 Difference]: With dead ends: 205 [2018-11-10 04:51:05,267 INFO L226 Difference]: Without dead ends: 119 [2018-11-10 04:51:05,268 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-10 04:51:05,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-11-10 04:51:05,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2018-11-10 04:51:05,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-11-10 04:51:05,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2018-11-10 04:51:05,277 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 39 [2018-11-10 04:51:05,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:05,277 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2018-11-10 04:51:05,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 04:51:05,277 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2018-11-10 04:51:05,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-10 04:51:05,278 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:05,278 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:05,279 INFO L424 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:05,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:05,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1956118066, now seen corresponding path program 5 times [2018-11-10 04:51:05,282 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:05,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:05,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:05,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:05,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:05,343 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:05,343 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:05,349 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 04:51:05,363 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-10 04:51:05,363 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:05,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:05,393 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:05,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-10 04:51:05,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 04:51:05,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 04:51:05,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-10 04:51:05,394 INFO L87 Difference]: Start difference. First operand 115 states and 129 transitions. Second operand 8 states. [2018-11-10 04:51:05,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:05,452 INFO L93 Difference]: Finished difference Result 209 states and 247 transitions. [2018-11-10 04:51:05,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 04:51:05,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2018-11-10 04:51:05,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:05,454 INFO L225 Difference]: With dead ends: 209 [2018-11-10 04:51:05,454 INFO L226 Difference]: Without dead ends: 207 [2018-11-10 04:51:05,454 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-10 04:51:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-11-10 04:51:05,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 132. [2018-11-10 04:51:05,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-11-10 04:51:05,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 149 transitions. [2018-11-10 04:51:05,464 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 149 transitions. Word has length 44 [2018-11-10 04:51:05,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:05,464 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 149 transitions. [2018-11-10 04:51:05,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 04:51:05,465 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 149 transitions. [2018-11-10 04:51:05,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-10 04:51:05,465 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:05,466 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:05,466 INFO L424 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:05,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:05,466 INFO L82 PathProgramCache]: Analyzing trace with hash 35721079, now seen corresponding path program 3 times [2018-11-10 04:51:05,466 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:05,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:05,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:05,468 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:05,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:05,519 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 04:51:05,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:05,519 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:05,524 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 04:51:05,531 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-10 04:51:05,532 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:05,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 45 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-10 04:51:05,577 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:05,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 10 [2018-11-10 04:51:05,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 04:51:05,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 04:51:05,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-10 04:51:05,578 INFO L87 Difference]: Start difference. First operand 132 states and 149 transitions. Second operand 10 states. [2018-11-10 04:51:05,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:05,609 INFO L93 Difference]: Finished difference Result 177 states and 200 transitions. [2018-11-10 04:51:05,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 04:51:05,609 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2018-11-10 04:51:05,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:05,610 INFO L225 Difference]: With dead ends: 177 [2018-11-10 04:51:05,610 INFO L226 Difference]: Without dead ends: 74 [2018-11-10 04:51:05,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-10 04:51:05,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-11-10 04:51:05,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2018-11-10 04:51:05,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-11-10 04:51:05,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2018-11-10 04:51:05,614 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 46 [2018-11-10 04:51:05,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:05,614 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2018-11-10 04:51:05,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 04:51:05,615 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2018-11-10 04:51:05,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-10 04:51:05,615 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:05,615 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:05,616 INFO L424 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:05,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:05,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1145884657, now seen corresponding path program 6 times [2018-11-10 04:51:05,616 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:05,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:05,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:05,617 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:05,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:05,677 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:05,677 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:05,677 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:05,683 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 04:51:05,693 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-10 04:51:05,693 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:05,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:05,702 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:05,718 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:05,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-10 04:51:05,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 04:51:05,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 04:51:05,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-10 04:51:05,719 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand 9 states. [2018-11-10 04:51:05,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:05,773 INFO L93 Difference]: Finished difference Result 214 states and 258 transitions. [2018-11-10 04:51:05,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 04:51:05,773 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2018-11-10 04:51:05,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:05,774 INFO L225 Difference]: With dead ends: 214 [2018-11-10 04:51:05,774 INFO L226 Difference]: Without dead ends: 212 [2018-11-10 04:51:05,775 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-10 04:51:05,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-11-10 04:51:05,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 202. [2018-11-10 04:51:05,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-11-10 04:51:05,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 228 transitions. [2018-11-10 04:51:05,783 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 228 transitions. Word has length 51 [2018-11-10 04:51:05,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:05,783 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 228 transitions. [2018-11-10 04:51:05,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 04:51:05,783 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 228 transitions. [2018-11-10 04:51:05,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-10 04:51:05,784 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:05,784 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:05,785 INFO L424 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:05,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:05,785 INFO L82 PathProgramCache]: Analyzing trace with hash -2025544018, now seen corresponding path program 7 times [2018-11-10 04:51:05,785 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:05,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:05,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:05,786 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:05,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:05,855 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:05,855 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:05,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:05,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:05,881 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:05,897 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:05,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-10 04:51:05,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 04:51:05,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 04:51:05,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-10 04:51:05,899 INFO L87 Difference]: Start difference. First operand 202 states and 228 transitions. Second operand 10 states. [2018-11-10 04:51:05,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:05,965 INFO L93 Difference]: Finished difference Result 374 states and 446 transitions. [2018-11-10 04:51:05,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 04:51:05,966 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2018-11-10 04:51:05,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:05,967 INFO L225 Difference]: With dead ends: 374 [2018-11-10 04:51:05,967 INFO L226 Difference]: Without dead ends: 372 [2018-11-10 04:51:05,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-10 04:51:05,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-11-10 04:51:05,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 226. [2018-11-10 04:51:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-11-10 04:51:05,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 256 transitions. [2018-11-10 04:51:05,975 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 256 transitions. Word has length 58 [2018-11-10 04:51:05,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:05,975 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 256 transitions. [2018-11-10 04:51:05,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 04:51:05,975 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 256 transitions. [2018-11-10 04:51:05,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-10 04:51:05,978 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:05,978 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:05,978 INFO L424 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:05,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:05,978 INFO L82 PathProgramCache]: Analyzing trace with hash 371019567, now seen corresponding path program 8 times [2018-11-10 04:51:05,979 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:05,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:05,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:05,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:05,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:06,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:06,051 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:06,070 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:51:06,082 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:51:06,082 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:06,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:06,094 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:06,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:06,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-10 04:51:06,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 04:51:06,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 04:51:06,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-10 04:51:06,113 INFO L87 Difference]: Start difference. First operand 226 states and 256 transitions. Second operand 11 states. [2018-11-10 04:51:06,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:06,174 INFO L93 Difference]: Finished difference Result 423 states and 506 transitions. [2018-11-10 04:51:06,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 04:51:06,176 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2018-11-10 04:51:06,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:06,177 INFO L225 Difference]: With dead ends: 423 [2018-11-10 04:51:06,177 INFO L226 Difference]: Without dead ends: 421 [2018-11-10 04:51:06,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-10 04:51:06,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-11-10 04:51:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 250. [2018-11-10 04:51:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-11-10 04:51:06,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 284 transitions. [2018-11-10 04:51:06,192 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 284 transitions. Word has length 65 [2018-11-10 04:51:06,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:06,192 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 284 transitions. [2018-11-10 04:51:06,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 04:51:06,192 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 284 transitions. [2018-11-10 04:51:06,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-10 04:51:06,193 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:06,193 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:06,193 INFO L424 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:06,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:06,194 INFO L82 PathProgramCache]: Analyzing trace with hash 2106211474, now seen corresponding path program 4 times [2018-11-10 04:51:06,194 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:06,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:06,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:06,195 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:06,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 111 proven. 67 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-10 04:51:06,252 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:06,252 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:06,259 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:51:06,269 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:51:06,269 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:06,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 72 proven. 123 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-10 04:51:06,328 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:06,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2018-11-10 04:51:06,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-10 04:51:06,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-10 04:51:06,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-10 04:51:06,329 INFO L87 Difference]: Start difference. First operand 250 states and 284 transitions. Second operand 15 states. [2018-11-10 04:51:06,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:06,379 INFO L93 Difference]: Finished difference Result 597 states and 698 transitions. [2018-11-10 04:51:06,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-10 04:51:06,384 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2018-11-10 04:51:06,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:06,385 INFO L225 Difference]: With dead ends: 597 [2018-11-10 04:51:06,385 INFO L226 Difference]: Without dead ends: 390 [2018-11-10 04:51:06,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-10 04:51:06,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2018-11-10 04:51:06,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 381. [2018-11-10 04:51:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-11-10 04:51:06,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 433 transitions. [2018-11-10 04:51:06,395 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 433 transitions. Word has length 67 [2018-11-10 04:51:06,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:06,395 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 433 transitions. [2018-11-10 04:51:06,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-10 04:51:06,395 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 433 transitions. [2018-11-10 04:51:06,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-10 04:51:06,396 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:06,396 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:06,396 INFO L424 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:06,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:06,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1037089906, now seen corresponding path program 9 times [2018-11-10 04:51:06,396 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:06,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:06,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:06,397 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:06,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:06,463 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:06,463 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:06,477 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 04:51:06,511 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-10 04:51:06,511 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:06,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:06,523 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:06,541 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:06,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-10 04:51:06,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-10 04:51:06,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-10 04:51:06,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-10 04:51:06,542 INFO L87 Difference]: Start difference. First operand 381 states and 433 transitions. Second operand 12 states. [2018-11-10 04:51:06,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:06,610 INFO L93 Difference]: Finished difference Result 729 states and 877 transitions. [2018-11-10 04:51:06,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 04:51:06,611 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2018-11-10 04:51:06,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:06,612 INFO L225 Difference]: With dead ends: 729 [2018-11-10 04:51:06,612 INFO L226 Difference]: Without dead ends: 727 [2018-11-10 04:51:06,613 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-10 04:51:06,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2018-11-10 04:51:06,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 426. [2018-11-10 04:51:06,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2018-11-10 04:51:06,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 485 transitions. [2018-11-10 04:51:06,622 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 485 transitions. Word has length 72 [2018-11-10 04:51:06,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:06,623 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 485 transitions. [2018-11-10 04:51:06,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-10 04:51:06,623 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 485 transitions. [2018-11-10 04:51:06,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-11-10 04:51:06,623 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:06,623 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:06,624 INFO L424 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:06,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:06,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1135446449, now seen corresponding path program 10 times [2018-11-10 04:51:06,624 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:06,624 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:06,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:06,625 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:06,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:06,699 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:06,699 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:06,716 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:51:06,733 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:51:06,733 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:06,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:06,743 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:06,760 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:06,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-10 04:51:06,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-10 04:51:06,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-10 04:51:06,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-10 04:51:06,761 INFO L87 Difference]: Start difference. First operand 426 states and 485 transitions. Second operand 13 states. [2018-11-10 04:51:06,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:06,848 INFO L93 Difference]: Finished difference Result 820 states and 988 transitions. [2018-11-10 04:51:06,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-10 04:51:06,849 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 79 [2018-11-10 04:51:06,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:06,851 INFO L225 Difference]: With dead ends: 820 [2018-11-10 04:51:06,851 INFO L226 Difference]: Without dead ends: 818 [2018-11-10 04:51:06,851 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-10 04:51:06,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2018-11-10 04:51:06,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 471. [2018-11-10 04:51:06,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2018-11-10 04:51:06,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 537 transitions. [2018-11-10 04:51:06,861 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 537 transitions. Word has length 79 [2018-11-10 04:51:06,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:06,862 INFO L481 AbstractCegarLoop]: Abstraction has 471 states and 537 transitions. [2018-11-10 04:51:06,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-10 04:51:06,862 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 537 transitions. [2018-11-10 04:51:06,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-11-10 04:51:06,862 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:06,862 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:06,863 INFO L424 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:06,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:06,863 INFO L82 PathProgramCache]: Analyzing trace with hash -262809490, now seen corresponding path program 11 times [2018-11-10 04:51:06,863 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:06,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:06,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:06,864 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:06,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:06,946 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:06,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:06,946 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:06,960 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 04:51:06,996 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-11-10 04:51:06,996 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:06,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:07,024 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:07,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-11-10 04:51:07,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-10 04:51:07,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 04:51:07,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-10 04:51:07,025 INFO L87 Difference]: Start difference. First operand 471 states and 537 transitions. Second operand 14 states. [2018-11-10 04:51:07,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:07,104 INFO L93 Difference]: Finished difference Result 911 states and 1099 transitions. [2018-11-10 04:51:07,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 04:51:07,105 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 86 [2018-11-10 04:51:07,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:07,107 INFO L225 Difference]: With dead ends: 911 [2018-11-10 04:51:07,107 INFO L226 Difference]: Without dead ends: 909 [2018-11-10 04:51:07,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-10 04:51:07,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2018-11-10 04:51:07,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 516. [2018-11-10 04:51:07,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2018-11-10 04:51:07,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 589 transitions. [2018-11-10 04:51:07,121 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 589 transitions. Word has length 86 [2018-11-10 04:51:07,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:07,121 INFO L481 AbstractCegarLoop]: Abstraction has 516 states and 589 transitions. [2018-11-10 04:51:07,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-10 04:51:07,121 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 589 transitions. [2018-11-10 04:51:07,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-10 04:51:07,122 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:07,122 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:07,123 INFO L424 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:07,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:07,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1973115537, now seen corresponding path program 12 times [2018-11-10 04:51:07,123 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:07,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:07,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:07,124 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:07,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:07,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:07,224 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:07,231 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 04:51:07,269 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-11-10 04:51:07,269 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:07,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:07,290 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:07,306 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:07,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-11-10 04:51:07,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-10 04:51:07,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-10 04:51:07,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-10 04:51:07,307 INFO L87 Difference]: Start difference. First operand 516 states and 589 transitions. Second operand 15 states. [2018-11-10 04:51:07,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:07,383 INFO L93 Difference]: Finished difference Result 1002 states and 1210 transitions. [2018-11-10 04:51:07,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-10 04:51:07,383 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 93 [2018-11-10 04:51:07,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:07,385 INFO L225 Difference]: With dead ends: 1002 [2018-11-10 04:51:07,385 INFO L226 Difference]: Without dead ends: 1000 [2018-11-10 04:51:07,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-10 04:51:07,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2018-11-10 04:51:07,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 561. [2018-11-10 04:51:07,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2018-11-10 04:51:07,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 641 transitions. [2018-11-10 04:51:07,399 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 641 transitions. Word has length 93 [2018-11-10 04:51:07,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:07,399 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 641 transitions. [2018-11-10 04:51:07,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-10 04:51:07,399 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 641 transitions. [2018-11-10 04:51:07,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-10 04:51:07,400 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:07,400 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:07,400 INFO L424 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:07,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:07,401 INFO L82 PathProgramCache]: Analyzing trace with hash -580491954, now seen corresponding path program 13 times [2018-11-10 04:51:07,401 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:07,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:07,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:07,402 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:07,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:07,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:07,496 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:07,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:07,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:07,543 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:07,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-10 04:51:07,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-10 04:51:07,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-10 04:51:07,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-10 04:51:07,544 INFO L87 Difference]: Start difference. First operand 561 states and 641 transitions. Second operand 16 states. [2018-11-10 04:51:07,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:07,634 INFO L93 Difference]: Finished difference Result 1093 states and 1321 transitions. [2018-11-10 04:51:07,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-10 04:51:07,635 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 100 [2018-11-10 04:51:07,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:07,638 INFO L225 Difference]: With dead ends: 1093 [2018-11-10 04:51:07,638 INFO L226 Difference]: Without dead ends: 1091 [2018-11-10 04:51:07,639 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-10 04:51:07,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2018-11-10 04:51:07,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 606. [2018-11-10 04:51:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2018-11-10 04:51:07,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 693 transitions. [2018-11-10 04:51:07,652 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 693 transitions. Word has length 100 [2018-11-10 04:51:07,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:07,653 INFO L481 AbstractCegarLoop]: Abstraction has 606 states and 693 transitions. [2018-11-10 04:51:07,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-10 04:51:07,653 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 693 transitions. [2018-11-10 04:51:07,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-10 04:51:07,654 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:07,654 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 8, 8, 8, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:07,654 INFO L424 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:07,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:07,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2076289143, now seen corresponding path program 5 times [2018-11-10 04:51:07,655 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:07,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:07,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:07,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:07,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:07,713 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 223 proven. 220 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-10 04:51:07,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:07,713 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:07,736 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 04:51:07,755 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2018-11-10 04:51:07,755 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:07,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:07,765 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 223 proven. 220 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-10 04:51:07,783 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:07,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-10 04:51:07,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 04:51:07,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 04:51:07,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-10 04:51:07,784 INFO L87 Difference]: Start difference. First operand 606 states and 693 transitions. Second operand 11 states. [2018-11-10 04:51:07,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:07,817 INFO L93 Difference]: Finished difference Result 1166 states and 1341 transitions. [2018-11-10 04:51:07,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 04:51:07,817 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2018-11-10 04:51:07,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:07,819 INFO L225 Difference]: With dead ends: 1166 [2018-11-10 04:51:07,819 INFO L226 Difference]: Without dead ends: 617 [2018-11-10 04:51:07,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-10 04:51:07,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2018-11-10 04:51:07,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 613. [2018-11-10 04:51:07,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2018-11-10 04:51:07,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 700 transitions. [2018-11-10 04:51:07,832 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 700 transitions. Word has length 102 [2018-11-10 04:51:07,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:07,832 INFO L481 AbstractCegarLoop]: Abstraction has 613 states and 700 transitions. [2018-11-10 04:51:07,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 04:51:07,833 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 700 transitions. [2018-11-10 04:51:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-11-10 04:51:07,833 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:07,834 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:07,834 INFO L424 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:07,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:07,834 INFO L82 PathProgramCache]: Analyzing trace with hash -723133297, now seen corresponding path program 14 times [2018-11-10 04:51:07,834 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:07,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:07,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:07,835 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:07,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:07,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:07,946 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:07,954 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:51:07,983 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:51:07,983 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:07,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:07,996 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:08,013 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:08,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-11-10 04:51:08,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-10 04:51:08,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-10 04:51:08,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-11-10 04:51:08,014 INFO L87 Difference]: Start difference. First operand 613 states and 700 transitions. Second operand 17 states. [2018-11-10 04:51:08,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:08,106 INFO L93 Difference]: Finished difference Result 1191 states and 1439 transitions. [2018-11-10 04:51:08,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-10 04:51:08,107 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 107 [2018-11-10 04:51:08,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:08,109 INFO L225 Difference]: With dead ends: 1191 [2018-11-10 04:51:08,109 INFO L226 Difference]: Without dead ends: 1189 [2018-11-10 04:51:08,110 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-11-10 04:51:08,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2018-11-10 04:51:08,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 658. [2018-11-10 04:51:08,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2018-11-10 04:51:08,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 752 transitions. [2018-11-10 04:51:08,123 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 752 transitions. Word has length 107 [2018-11-10 04:51:08,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:08,124 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 752 transitions. [2018-11-10 04:51:08,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-10 04:51:08,124 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 752 transitions. [2018-11-10 04:51:08,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-10 04:51:08,125 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:08,125 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 9, 9, 9, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:08,125 INFO L424 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:08,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:08,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1858055304, now seen corresponding path program 6 times [2018-11-10 04:51:08,126 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:08,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:08,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:08,126 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:08,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 249 proven. 279 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-10 04:51:08,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:08,187 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:08,205 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 04:51:08,239 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2018-11-10 04:51:08,239 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:08,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 282 proven. 111 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-11-10 04:51:08,367 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:08,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 19 [2018-11-10 04:51:08,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-10 04:51:08,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-10 04:51:08,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-10 04:51:08,369 INFO L87 Difference]: Start difference. First operand 658 states and 752 transitions. Second operand 19 states. [2018-11-10 04:51:08,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:08,445 INFO L93 Difference]: Finished difference Result 1348 states and 1552 transitions. [2018-11-10 04:51:08,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-10 04:51:08,446 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 109 [2018-11-10 04:51:08,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:08,448 INFO L225 Difference]: With dead ends: 1348 [2018-11-10 04:51:08,448 INFO L226 Difference]: Without dead ends: 754 [2018-11-10 04:51:08,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-10 04:51:08,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2018-11-10 04:51:08,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 739. [2018-11-10 04:51:08,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2018-11-10 04:51:08,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 843 transitions. [2018-11-10 04:51:08,466 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 843 transitions. Word has length 109 [2018-11-10 04:51:08,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:08,467 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 843 transitions. [2018-11-10 04:51:08,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-10 04:51:08,467 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 843 transitions. [2018-11-10 04:51:08,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-10 04:51:08,468 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:08,468 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:08,469 INFO L424 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:08,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:08,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1284434478, now seen corresponding path program 15 times [2018-11-10 04:51:08,469 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:08,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:08,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:08,470 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:08,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:08,612 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:08,612 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:08,619 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 04:51:08,664 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-11-10 04:51:08,664 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:08,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:08,692 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:08,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-11-10 04:51:08,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-10 04:51:08,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-10 04:51:08,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-10 04:51:08,693 INFO L87 Difference]: Start difference. First operand 739 states and 843 transitions. Second operand 18 states. [2018-11-10 04:51:08,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:08,801 INFO L93 Difference]: Finished difference Result 1433 states and 1731 transitions. [2018-11-10 04:51:08,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-10 04:51:08,802 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 114 [2018-11-10 04:51:08,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:08,804 INFO L225 Difference]: With dead ends: 1433 [2018-11-10 04:51:08,804 INFO L226 Difference]: Without dead ends: 1431 [2018-11-10 04:51:08,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-10 04:51:08,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2018-11-10 04:51:08,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 791. [2018-11-10 04:51:08,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2018-11-10 04:51:08,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 903 transitions. [2018-11-10 04:51:08,820 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 903 transitions. Word has length 114 [2018-11-10 04:51:08,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:08,820 INFO L481 AbstractCegarLoop]: Abstraction has 791 states and 903 transitions. [2018-11-10 04:51:08,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-10 04:51:08,820 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 903 transitions. [2018-11-10 04:51:08,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-10 04:51:08,821 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:08,821 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:08,822 INFO L424 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:08,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:08,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1998054481, now seen corresponding path program 16 times [2018-11-10 04:51:08,822 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:08,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:08,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:08,823 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:08,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:08,950 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:08,950 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:08,960 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:51:08,973 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:51:08,973 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:08,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:09,003 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:09,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-11-10 04:51:09,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-10 04:51:09,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-10 04:51:09,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-10 04:51:09,004 INFO L87 Difference]: Start difference. First operand 791 states and 903 transitions. Second operand 19 states. [2018-11-10 04:51:09,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:09,125 INFO L93 Difference]: Finished difference Result 1538 states and 1859 transitions. [2018-11-10 04:51:09,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-10 04:51:09,125 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 121 [2018-11-10 04:51:09,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:09,128 INFO L225 Difference]: With dead ends: 1538 [2018-11-10 04:51:09,128 INFO L226 Difference]: Without dead ends: 1536 [2018-11-10 04:51:09,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-10 04:51:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2018-11-10 04:51:09,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 843. [2018-11-10 04:51:09,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2018-11-10 04:51:09,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 963 transitions. [2018-11-10 04:51:09,144 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 963 transitions. Word has length 121 [2018-11-10 04:51:09,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:09,144 INFO L481 AbstractCegarLoop]: Abstraction has 843 states and 963 transitions. [2018-11-10 04:51:09,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-10 04:51:09,144 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 963 transitions. [2018-11-10 04:51:09,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-10 04:51:09,145 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:09,145 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:09,146 INFO L424 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:09,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:09,146 INFO L82 PathProgramCache]: Analyzing trace with hash -662870258, now seen corresponding path program 17 times [2018-11-10 04:51:09,146 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:09,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:09,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:09,147 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:09,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:09,286 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:09,286 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:09,293 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 04:51:09,351 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-11-10 04:51:09,351 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:09,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:09,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:09,381 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:09,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-11-10 04:51:09,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-10 04:51:09,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-10 04:51:09,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-10 04:51:09,382 INFO L87 Difference]: Start difference. First operand 843 states and 963 transitions. Second operand 20 states. [2018-11-10 04:51:09,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:09,484 INFO L93 Difference]: Finished difference Result 1643 states and 1987 transitions. [2018-11-10 04:51:09,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-10 04:51:09,485 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 128 [2018-11-10 04:51:09,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:09,487 INFO L225 Difference]: With dead ends: 1643 [2018-11-10 04:51:09,488 INFO L226 Difference]: Without dead ends: 1641 [2018-11-10 04:51:09,488 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-10 04:51:09,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2018-11-10 04:51:09,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 895. [2018-11-10 04:51:09,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2018-11-10 04:51:09,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1023 transitions. [2018-11-10 04:51:09,504 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1023 transitions. Word has length 128 [2018-11-10 04:51:09,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:09,504 INFO L481 AbstractCegarLoop]: Abstraction has 895 states and 1023 transitions. [2018-11-10 04:51:09,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-10 04:51:09,504 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1023 transitions. [2018-11-10 04:51:09,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-10 04:51:09,505 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:09,506 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 11, 11, 11, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:09,506 INFO L424 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:09,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:09,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1757703375, now seen corresponding path program 7 times [2018-11-10 04:51:09,506 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:09,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:09,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:09,507 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:09,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:09,595 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 359 proven. 418 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-10 04:51:09,595 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:09,595 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:09,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:09,617 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 359 proven. 418 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-10 04:51:09,652 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:09,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-11-10 04:51:09,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-10 04:51:09,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 04:51:09,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-10 04:51:09,653 INFO L87 Difference]: Start difference. First operand 895 states and 1023 transitions. Second operand 14 states. [2018-11-10 04:51:09,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:09,697 INFO L93 Difference]: Finished difference Result 1723 states and 1980 transitions. [2018-11-10 04:51:09,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 04:51:09,697 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 130 [2018-11-10 04:51:09,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:09,699 INFO L225 Difference]: With dead ends: 1723 [2018-11-10 04:51:09,699 INFO L226 Difference]: Without dead ends: 906 [2018-11-10 04:51:09,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-10 04:51:09,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2018-11-10 04:51:09,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 902. [2018-11-10 04:51:09,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902 states. [2018-11-10 04:51:09,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1030 transitions. [2018-11-10 04:51:09,712 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1030 transitions. Word has length 130 [2018-11-10 04:51:09,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:09,712 INFO L481 AbstractCegarLoop]: Abstraction has 902 states and 1030 transitions. [2018-11-10 04:51:09,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-10 04:51:09,712 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1030 transitions. [2018-11-10 04:51:09,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-10 04:51:09,714 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:09,714 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:09,714 INFO L424 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:09,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:09,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1274897103, now seen corresponding path program 18 times [2018-11-10 04:51:09,714 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:09,714 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:09,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:09,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:09,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:09,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:09,870 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:09,877 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 04:51:09,917 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-11-10 04:51:09,917 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:09,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:09,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:09,948 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:09,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-11-10 04:51:09,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-10 04:51:09,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-10 04:51:09,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-11-10 04:51:09,949 INFO L87 Difference]: Start difference. First operand 902 states and 1030 transitions. Second operand 21 states. [2018-11-10 04:51:10,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:10,070 INFO L93 Difference]: Finished difference Result 1755 states and 2122 transitions. [2018-11-10 04:51:10,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-10 04:51:10,071 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 135 [2018-11-10 04:51:10,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:10,075 INFO L225 Difference]: With dead ends: 1755 [2018-11-10 04:51:10,076 INFO L226 Difference]: Without dead ends: 1753 [2018-11-10 04:51:10,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-11-10 04:51:10,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2018-11-10 04:51:10,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 954. [2018-11-10 04:51:10,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 954 states. [2018-11-10 04:51:10,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1090 transitions. [2018-11-10 04:51:10,102 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1090 transitions. Word has length 135 [2018-11-10 04:51:10,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:10,103 INFO L481 AbstractCegarLoop]: Abstraction has 954 states and 1090 transitions. [2018-11-10 04:51:10,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-10 04:51:10,103 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1090 transitions. [2018-11-10 04:51:10,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-10 04:51:10,104 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:10,105 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 12, 12, 12, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:10,105 INFO L424 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:10,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:10,105 INFO L82 PathProgramCache]: Analyzing trace with hash 715891378, now seen corresponding path program 8 times [2018-11-10 04:51:10,105 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:10,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:10,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:10,106 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:10,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 390 proven. 498 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-10 04:51:10,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:10,221 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:10,228 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:51:10,249 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:51:10,249 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:10,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:10,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 390 proven. 498 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-10 04:51:10,295 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:10,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-10 04:51:10,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-10 04:51:10,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-10 04:51:10,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-10 04:51:10,296 INFO L87 Difference]: Start difference. First operand 954 states and 1090 transitions. Second operand 15 states. [2018-11-10 04:51:10,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:10,344 INFO L93 Difference]: Finished difference Result 1834 states and 2107 transitions. [2018-11-10 04:51:10,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-10 04:51:10,345 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 137 [2018-11-10 04:51:10,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:10,346 INFO L225 Difference]: With dead ends: 1834 [2018-11-10 04:51:10,346 INFO L226 Difference]: Without dead ends: 965 [2018-11-10 04:51:10,348 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-10 04:51:10,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2018-11-10 04:51:10,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 961. [2018-11-10 04:51:10,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2018-11-10 04:51:10,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1097 transitions. [2018-11-10 04:51:10,361 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1097 transitions. Word has length 137 [2018-11-10 04:51:10,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:10,361 INFO L481 AbstractCegarLoop]: Abstraction has 961 states and 1097 transitions. [2018-11-10 04:51:10,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-10 04:51:10,361 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1097 transitions. [2018-11-10 04:51:10,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-11-10 04:51:10,363 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:10,363 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:10,363 INFO L424 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:10,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:10,363 INFO L82 PathProgramCache]: Analyzing trace with hash -748692498, now seen corresponding path program 19 times [2018-11-10 04:51:10,364 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:10,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:10,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:10,364 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:10,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:10,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:10,526 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:10,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:10,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:10,580 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:10,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-11-10 04:51:10,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-10 04:51:10,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-10 04:51:10,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-10 04:51:10,581 INFO L87 Difference]: Start difference. First operand 961 states and 1097 transitions. Second operand 22 states. [2018-11-10 04:51:10,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:10,709 INFO L93 Difference]: Finished difference Result 1867 states and 2257 transitions. [2018-11-10 04:51:10,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-10 04:51:10,710 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 142 [2018-11-10 04:51:10,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:10,713 INFO L225 Difference]: With dead ends: 1867 [2018-11-10 04:51:10,714 INFO L226 Difference]: Without dead ends: 1865 [2018-11-10 04:51:10,714 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-10 04:51:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2018-11-10 04:51:10,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1013. [2018-11-10 04:51:10,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2018-11-10 04:51:10,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1157 transitions. [2018-11-10 04:51:10,734 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1157 transitions. Word has length 142 [2018-11-10 04:51:10,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:10,735 INFO L481 AbstractCegarLoop]: Abstraction has 1013 states and 1157 transitions. [2018-11-10 04:51:10,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-10 04:51:10,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1157 transitions. [2018-11-10 04:51:10,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-10 04:51:10,737 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:10,737 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 13, 13, 13, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:10,737 INFO L424 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:10,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:10,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1666469905, now seen corresponding path program 9 times [2018-11-10 04:51:10,737 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:10,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:10,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:10,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:10,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:10,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 421 proven. 585 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-10 04:51:10,875 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:10,875 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:10,883 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 04:51:10,912 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-11-10 04:51:10,912 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:10,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 519 proven. 192 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2018-11-10 04:51:11,070 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:11,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 25 [2018-11-10 04:51:11,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-10 04:51:11,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-10 04:51:11,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-11-10 04:51:11,071 INFO L87 Difference]: Start difference. First operand 1013 states and 1157 transitions. Second operand 25 states. [2018-11-10 04:51:11,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:11,188 INFO L93 Difference]: Finished difference Result 2151 states and 2487 transitions. [2018-11-10 04:51:11,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-10 04:51:11,192 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 144 [2018-11-10 04:51:11,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:11,194 INFO L225 Difference]: With dead ends: 2151 [2018-11-10 04:51:11,195 INFO L226 Difference]: Without dead ends: 1230 [2018-11-10 04:51:11,196 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-11-10 04:51:11,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2018-11-10 04:51:11,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1210. [2018-11-10 04:51:11,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2018-11-10 04:51:11,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1381 transitions. [2018-11-10 04:51:11,216 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1381 transitions. Word has length 144 [2018-11-10 04:51:11,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:11,216 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1381 transitions. [2018-11-10 04:51:11,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-10 04:51:11,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1381 transitions. [2018-11-10 04:51:11,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-10 04:51:11,218 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:11,218 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:11,218 INFO L424 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:11,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:11,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1674071569, now seen corresponding path program 20 times [2018-11-10 04:51:11,219 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:11,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:11,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:11,219 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:11,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:11,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:11,447 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:11,447 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:11,456 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:51:11,475 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:51:11,476 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:11,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:11,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:11,526 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:11,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-11-10 04:51:11,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-10 04:51:11,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-10 04:51:11,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-11-10 04:51:11,527 INFO L87 Difference]: Start difference. First operand 1210 states and 1381 transitions. Second operand 23 states. [2018-11-10 04:51:11,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:11,774 INFO L93 Difference]: Finished difference Result 2358 states and 2852 transitions. [2018-11-10 04:51:11,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-10 04:51:11,775 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 149 [2018-11-10 04:51:11,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:11,779 INFO L225 Difference]: With dead ends: 2358 [2018-11-10 04:51:11,780 INFO L226 Difference]: Without dead ends: 2356 [2018-11-10 04:51:11,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-11-10 04:51:11,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2018-11-10 04:51:11,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 1276. [2018-11-10 04:51:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2018-11-10 04:51:11,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1457 transitions. [2018-11-10 04:51:11,805 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1457 transitions. Word has length 149 [2018-11-10 04:51:11,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:11,806 INFO L481 AbstractCegarLoop]: Abstraction has 1276 states and 1457 transitions. [2018-11-10 04:51:11,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-10 04:51:11,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1457 transitions. [2018-11-10 04:51:11,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-11-10 04:51:11,807 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:11,807 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:11,807 INFO L424 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:11,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:11,808 INFO L82 PathProgramCache]: Analyzing trace with hash 652495054, now seen corresponding path program 21 times [2018-11-10 04:51:11,808 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:11,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:11,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:11,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:11,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:12,019 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:12,020 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:12,025 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 04:51:12,065 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-11-10 04:51:12,065 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:12,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:12,100 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:12,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-11-10 04:51:12,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-10 04:51:12,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-10 04:51:12,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-11-10 04:51:12,101 INFO L87 Difference]: Start difference. First operand 1276 states and 1457 transitions. Second operand 24 states. [2018-11-10 04:51:12,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:12,227 INFO L93 Difference]: Finished difference Result 2491 states and 3014 transitions. [2018-11-10 04:51:12,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-10 04:51:12,227 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 156 [2018-11-10 04:51:12,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:12,232 INFO L225 Difference]: With dead ends: 2491 [2018-11-10 04:51:12,233 INFO L226 Difference]: Without dead ends: 2489 [2018-11-10 04:51:12,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-11-10 04:51:12,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2018-11-10 04:51:12,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 1342. [2018-11-10 04:51:12,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1342 states. [2018-11-10 04:51:12,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1533 transitions. [2018-11-10 04:51:12,273 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1533 transitions. Word has length 156 [2018-11-10 04:51:12,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:12,273 INFO L481 AbstractCegarLoop]: Abstraction has 1342 states and 1533 transitions. [2018-11-10 04:51:12,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-10 04:51:12,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1533 transitions. [2018-11-10 04:51:12,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-11-10 04:51:12,274 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:12,274 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:12,274 INFO L424 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:12,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:12,274 INFO L82 PathProgramCache]: Analyzing trace with hash -265746161, now seen corresponding path program 22 times [2018-11-10 04:51:12,274 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:12,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:12,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:12,275 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:12,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:12,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:12,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:12,498 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:12,504 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:51:12,525 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:51:12,525 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:12,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:12,569 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:12,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-11-10 04:51:12,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-10 04:51:12,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-10 04:51:12,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-11-10 04:51:12,570 INFO L87 Difference]: Start difference. First operand 1342 states and 1533 transitions. Second operand 25 states. [2018-11-10 04:51:12,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:12,738 INFO L93 Difference]: Finished difference Result 2624 states and 3176 transitions. [2018-11-10 04:51:12,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-10 04:51:12,738 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 163 [2018-11-10 04:51:12,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:12,742 INFO L225 Difference]: With dead ends: 2624 [2018-11-10 04:51:12,742 INFO L226 Difference]: Without dead ends: 2622 [2018-11-10 04:51:12,744 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-11-10 04:51:12,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2018-11-10 04:51:12,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 1408. [2018-11-10 04:51:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1408 states. [2018-11-10 04:51:12,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 1609 transitions. [2018-11-10 04:51:12,775 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 1609 transitions. Word has length 163 [2018-11-10 04:51:12,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:12,775 INFO L481 AbstractCegarLoop]: Abstraction has 1408 states and 1609 transitions. [2018-11-10 04:51:12,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-10 04:51:12,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 1609 transitions. [2018-11-10 04:51:12,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-11-10 04:51:12,777 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:12,777 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:12,777 INFO L424 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:12,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:12,777 INFO L82 PathProgramCache]: Analyzing trace with hash 876129710, now seen corresponding path program 23 times [2018-11-10 04:51:12,777 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:12,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:12,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:12,778 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:12,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:13,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:13,023 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:13,031 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 04:51:13,058 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-11-10 04:51:13,058 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:13,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:13,101 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:13,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-11-10 04:51:13,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-10 04:51:13,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-10 04:51:13,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-11-10 04:51:13,101 INFO L87 Difference]: Start difference. First operand 1408 states and 1609 transitions. Second operand 26 states. [2018-11-10 04:51:13,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:13,214 INFO L93 Difference]: Finished difference Result 2757 states and 3338 transitions. [2018-11-10 04:51:13,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-10 04:51:13,214 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 170 [2018-11-10 04:51:13,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:13,218 INFO L225 Difference]: With dead ends: 2757 [2018-11-10 04:51:13,218 INFO L226 Difference]: Without dead ends: 2755 [2018-11-10 04:51:13,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-11-10 04:51:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2018-11-10 04:51:13,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 1474. [2018-11-10 04:51:13,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-10 04:51:13,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 1685 transitions. [2018-11-10 04:51:13,245 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 1685 transitions. Word has length 170 [2018-11-10 04:51:13,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:13,246 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 1685 transitions. [2018-11-10 04:51:13,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-10 04:51:13,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 1685 transitions. [2018-11-10 04:51:13,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-10 04:51:13,247 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:13,248 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 15, 15, 15, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:13,248 INFO L424 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:13,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:13,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1092729071, now seen corresponding path program 10 times [2018-11-10 04:51:13,248 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:13,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:13,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:13,249 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:13,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 639 proven. 780 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-11-10 04:51:13,395 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:13,395 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:13,401 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:51:13,431 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:51:13,431 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:13,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:13,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 639 proven. 780 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-11-10 04:51:13,477 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:13,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-11-10 04:51:13,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-10 04:51:13,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-10 04:51:13,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-10 04:51:13,478 INFO L87 Difference]: Start difference. First operand 1474 states and 1685 transitions. Second operand 18 states. [2018-11-10 04:51:13,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:13,553 INFO L93 Difference]: Finished difference Result 2853 states and 3276 transitions. [2018-11-10 04:51:13,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-10 04:51:13,554 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 172 [2018-11-10 04:51:13,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:13,556 INFO L225 Difference]: With dead ends: 2853 [2018-11-10 04:51:13,556 INFO L226 Difference]: Without dead ends: 1485 [2018-11-10 04:51:13,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-10 04:51:13,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2018-11-10 04:51:13,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1481. [2018-11-10 04:51:13,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2018-11-10 04:51:13,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 1692 transitions. [2018-11-10 04:51:13,575 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 1692 transitions. Word has length 172 [2018-11-10 04:51:13,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:13,576 INFO L481 AbstractCegarLoop]: Abstraction has 1481 states and 1692 transitions. [2018-11-10 04:51:13,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-10 04:51:13,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 1692 transitions. [2018-11-10 04:51:13,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-10 04:51:13,577 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:13,577 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:13,577 INFO L424 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:13,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:13,578 INFO L82 PathProgramCache]: Analyzing trace with hash -689739729, now seen corresponding path program 24 times [2018-11-10 04:51:13,578 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:13,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:13,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:13,579 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:13,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:13,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:13,836 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:13,845 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 04:51:13,908 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-11-10 04:51:13,908 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:13,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:13,949 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:13,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-11-10 04:51:13,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-10 04:51:13,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-10 04:51:13,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-11-10 04:51:13,949 INFO L87 Difference]: Start difference. First operand 1481 states and 1692 transitions. Second operand 27 states. [2018-11-10 04:51:14,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:14,074 INFO L93 Difference]: Finished difference Result 2897 states and 3507 transitions. [2018-11-10 04:51:14,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-10 04:51:14,075 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 177 [2018-11-10 04:51:14,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:14,078 INFO L225 Difference]: With dead ends: 2897 [2018-11-10 04:51:14,078 INFO L226 Difference]: Without dead ends: 2895 [2018-11-10 04:51:14,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-11-10 04:51:14,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2018-11-10 04:51:14,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1547. [2018-11-10 04:51:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1547 states. [2018-11-10 04:51:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 1768 transitions. [2018-11-10 04:51:14,101 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 1768 transitions. Word has length 177 [2018-11-10 04:51:14,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:14,101 INFO L481 AbstractCegarLoop]: Abstraction has 1547 states and 1768 transitions. [2018-11-10 04:51:14,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-10 04:51:14,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 1768 transitions. [2018-11-10 04:51:14,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-10 04:51:14,103 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:14,103 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 16, 16, 16, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:14,103 INFO L424 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:14,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:14,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1640260946, now seen corresponding path program 11 times [2018-11-10 04:51:14,104 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:14,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:14,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:14,105 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:14,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1788 backedges. 680 proven. 888 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-11-10 04:51:14,252 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:14,252 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:14,259 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 04:51:14,286 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-11-10 04:51:14,286 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:14,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1788 backedges. 680 proven. 888 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-11-10 04:51:14,342 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:14,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-11-10 04:51:14,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-10 04:51:14,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-10 04:51:14,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-10 04:51:14,343 INFO L87 Difference]: Start difference. First operand 1547 states and 1768 transitions. Second operand 19 states. [2018-11-10 04:51:14,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:14,397 INFO L93 Difference]: Finished difference Result 2992 states and 3435 transitions. [2018-11-10 04:51:14,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-10 04:51:14,398 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 179 [2018-11-10 04:51:14,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:14,401 INFO L225 Difference]: With dead ends: 2992 [2018-11-10 04:51:14,401 INFO L226 Difference]: Without dead ends: 1558 [2018-11-10 04:51:14,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-10 04:51:14,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2018-11-10 04:51:14,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1554. [2018-11-10 04:51:14,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2018-11-10 04:51:14,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1775 transitions. [2018-11-10 04:51:14,426 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1775 transitions. Word has length 179 [2018-11-10 04:51:14,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:14,426 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 1775 transitions. [2018-11-10 04:51:14,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-10 04:51:14,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1775 transitions. [2018-11-10 04:51:14,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-11-10 04:51:14,428 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:14,428 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:14,428 INFO L424 AbstractCegarLoop]: === Iteration 41 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:14,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:14,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1274344818, now seen corresponding path program 25 times [2018-11-10 04:51:14,429 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:14,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:14,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:14,429 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:14,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:14,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 2200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:14,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:14,717 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:14,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:14,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:14,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 2200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:14,826 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:14,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-11-10 04:51:14,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-10 04:51:14,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-10 04:51:14,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-11-10 04:51:14,827 INFO L87 Difference]: Start difference. First operand 1554 states and 1775 transitions. Second operand 28 states. [2018-11-10 04:51:14,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:14,985 INFO L93 Difference]: Finished difference Result 3037 states and 3676 transitions. [2018-11-10 04:51:14,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-10 04:51:14,986 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 184 [2018-11-10 04:51:14,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:14,990 INFO L225 Difference]: With dead ends: 3037 [2018-11-10 04:51:14,990 INFO L226 Difference]: Without dead ends: 3035 [2018-11-10 04:51:14,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-11-10 04:51:14,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2018-11-10 04:51:15,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 1620. [2018-11-10 04:51:15,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1620 states. [2018-11-10 04:51:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 1851 transitions. [2018-11-10 04:51:15,029 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 1851 transitions. Word has length 184 [2018-11-10 04:51:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:15,029 INFO L481 AbstractCegarLoop]: Abstraction has 1620 states and 1851 transitions. [2018-11-10 04:51:15,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-10 04:51:15,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 1851 transitions. [2018-11-10 04:51:15,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-11-10 04:51:15,031 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:15,031 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 17, 17, 17, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:15,031 INFO L424 AbstractCegarLoop]: === Iteration 42 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:15,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:15,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1819481103, now seen corresponding path program 12 times [2018-11-10 04:51:15,032 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:15,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:15,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:15,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:15,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:15,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1944 backedges. 721 proven. 1003 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-11-10 04:51:15,233 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:15,234 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:15,239 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 04:51:15,262 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-11-10 04:51:15,262 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:15,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1944 backedges. 855 proven. 309 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-10 04:51:15,413 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:15,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12] total 31 [2018-11-10 04:51:15,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-10 04:51:15,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-10 04:51:15,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-11-10 04:51:15,415 INFO L87 Difference]: Start difference. First operand 1620 states and 1851 transitions. Second operand 31 states. [2018-11-10 04:51:15,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:15,576 INFO L93 Difference]: Finished difference Result 3399 states and 3923 transitions. [2018-11-10 04:51:15,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-10 04:51:15,577 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 186 [2018-11-10 04:51:15,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:15,580 INFO L225 Difference]: With dead ends: 3399 [2018-11-10 04:51:15,580 INFO L226 Difference]: Without dead ends: 1899 [2018-11-10 04:51:15,582 INFO L605 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 [2018-11-10 04:51:15,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2018-11-10 04:51:15,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1873. [2018-11-10 04:51:15,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1873 states. [2018-11-10 04:51:15,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2139 transitions. [2018-11-10 04:51:15,610 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2139 transitions. Word has length 186 [2018-11-10 04:51:15,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:15,610 INFO L481 AbstractCegarLoop]: Abstraction has 1873 states and 2139 transitions. [2018-11-10 04:51:15,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-10 04:51:15,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2139 transitions. [2018-11-10 04:51:15,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-11-10 04:51:15,611 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:15,611 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:15,612 INFO L424 AbstractCegarLoop]: === Iteration 43 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:15,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:15,612 INFO L82 PathProgramCache]: Analyzing trace with hash 402181967, now seen corresponding path program 26 times [2018-11-10 04:51:15,612 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:15,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:15,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:15,613 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:15,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 2379 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:15,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:15,928 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:15,941 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:51:15,966 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:51:15,966 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:15,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:16,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 2379 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:16,020 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:16,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-11-10 04:51:16,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-11-10 04:51:16,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-11-10 04:51:16,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-11-10 04:51:16,021 INFO L87 Difference]: Start difference. First operand 1873 states and 2139 transitions. Second operand 29 states. [2018-11-10 04:51:16,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:16,188 INFO L93 Difference]: Finished difference Result 3668 states and 4441 transitions. [2018-11-10 04:51:16,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-10 04:51:16,188 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 191 [2018-11-10 04:51:16,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:16,192 INFO L225 Difference]: With dead ends: 3668 [2018-11-10 04:51:16,192 INFO L226 Difference]: Without dead ends: 3666 [2018-11-10 04:51:16,194 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-11-10 04:51:16,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2018-11-10 04:51:16,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 1953. [2018-11-10 04:51:16,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1953 states. [2018-11-10 04:51:16,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 2231 transitions. [2018-11-10 04:51:16,250 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 2231 transitions. Word has length 191 [2018-11-10 04:51:16,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:16,250 INFO L481 AbstractCegarLoop]: Abstraction has 1953 states and 2231 transitions. [2018-11-10 04:51:16,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-11-10 04:51:16,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 2231 transitions. [2018-11-10 04:51:16,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-11-10 04:51:16,252 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:16,252 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:16,253 INFO L424 AbstractCegarLoop]: === Iteration 44 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:16,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:16,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1769382034, now seen corresponding path program 27 times [2018-11-10 04:51:16,253 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:16,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:16,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:16,254 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:16,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:16,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 2565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:16,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:16,586 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:16,592 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 04:51:16,626 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-11-10 04:51:16,626 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:16,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 2565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:16,665 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:16,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-11-10 04:51:16,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-10 04:51:16,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-10 04:51:16,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-11-10 04:51:16,666 INFO L87 Difference]: Start difference. First operand 1953 states and 2231 transitions. Second operand 30 states. [2018-11-10 04:51:16,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:16,814 INFO L93 Difference]: Finished difference Result 3829 states and 4637 transitions. [2018-11-10 04:51:16,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-10 04:51:16,814 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 198 [2018-11-10 04:51:16,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:16,817 INFO L225 Difference]: With dead ends: 3829 [2018-11-10 04:51:16,817 INFO L226 Difference]: Without dead ends: 3827 [2018-11-10 04:51:16,818 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-11-10 04:51:16,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2018-11-10 04:51:16,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 2033. [2018-11-10 04:51:16,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2033 states. [2018-11-10 04:51:16,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 2323 transitions. [2018-11-10 04:51:16,847 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 2323 transitions. Word has length 198 [2018-11-10 04:51:16,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:16,847 INFO L481 AbstractCegarLoop]: Abstraction has 2033 states and 2323 transitions. [2018-11-10 04:51:16,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-11-10 04:51:16,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 2323 transitions. [2018-11-10 04:51:16,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-11-10 04:51:16,848 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:16,849 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:16,849 INFO L424 AbstractCegarLoop]: === Iteration 45 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:16,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:16,849 INFO L82 PathProgramCache]: Analyzing trace with hash -746897809, now seen corresponding path program 28 times [2018-11-10 04:51:16,849 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:16,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:16,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:16,850 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:16,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 2758 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:17,207 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:17,207 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:17,216 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:51:17,239 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:51:17,239 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:17,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 2758 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:17,281 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:17,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-11-10 04:51:17,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-10 04:51:17,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-10 04:51:17,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-11-10 04:51:17,282 INFO L87 Difference]: Start difference. First operand 2033 states and 2323 transitions. Second operand 31 states. [2018-11-10 04:51:17,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:17,467 INFO L93 Difference]: Finished difference Result 3990 states and 4833 transitions. [2018-11-10 04:51:17,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-10 04:51:17,468 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 205 [2018-11-10 04:51:17,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:17,471 INFO L225 Difference]: With dead ends: 3990 [2018-11-10 04:51:17,471 INFO L226 Difference]: Without dead ends: 3988 [2018-11-10 04:51:17,472 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-11-10 04:51:17,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3988 states. [2018-11-10 04:51:17,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3988 to 2113. [2018-11-10 04:51:17,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2113 states. [2018-11-10 04:51:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2415 transitions. [2018-11-10 04:51:17,513 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2415 transitions. Word has length 205 [2018-11-10 04:51:17,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:17,513 INFO L481 AbstractCegarLoop]: Abstraction has 2113 states and 2415 transitions. [2018-11-10 04:51:17,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-10 04:51:17,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2415 transitions. [2018-11-10 04:51:17,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-10 04:51:17,515 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:17,515 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:17,515 INFO L424 AbstractCegarLoop]: === Iteration 46 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:17,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:17,516 INFO L82 PathProgramCache]: Analyzing trace with hash -480138162, now seen corresponding path program 29 times [2018-11-10 04:51:17,516 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:17,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:17,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:17,517 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:17,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:17,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 2958 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:17,858 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:17,858 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:17,865 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 04:51:17,905 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-11-10 04:51:17,905 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:17,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 2958 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:17,974 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:17,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-11-10 04:51:17,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-10 04:51:17,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-10 04:51:17,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-11-10 04:51:17,975 INFO L87 Difference]: Start difference. First operand 2113 states and 2415 transitions. Second operand 32 states. [2018-11-10 04:51:18,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:18,186 INFO L93 Difference]: Finished difference Result 4151 states and 5029 transitions. [2018-11-10 04:51:18,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-10 04:51:18,187 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 212 [2018-11-10 04:51:18,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:18,191 INFO L225 Difference]: With dead ends: 4151 [2018-11-10 04:51:18,191 INFO L226 Difference]: Without dead ends: 4149 [2018-11-10 04:51:18,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-11-10 04:51:18,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4149 states. [2018-11-10 04:51:18,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4149 to 2193. [2018-11-10 04:51:18,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-11-10 04:51:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 2507 transitions. [2018-11-10 04:51:18,226 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 2507 transitions. Word has length 212 [2018-11-10 04:51:18,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:18,226 INFO L481 AbstractCegarLoop]: Abstraction has 2193 states and 2507 transitions. [2018-11-10 04:51:18,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-11-10 04:51:18,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 2507 transitions. [2018-11-10 04:51:18,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-11-10 04:51:18,227 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:18,227 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 19, 19, 19, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:18,227 INFO L424 AbstractCegarLoop]: === Iteration 47 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:18,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:18,227 INFO L82 PathProgramCache]: Analyzing trace with hash 345146097, now seen corresponding path program 13 times [2018-11-10 04:51:18,228 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:18,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:18,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:18,228 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:18,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2598 backedges. 999 proven. 1254 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-10 04:51:18,436 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:18,436 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:18,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:18,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:18,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2598 backedges. 999 proven. 1254 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-10 04:51:18,539 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:18,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-11-10 04:51:18,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-10 04:51:18,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-10 04:51:18,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-10 04:51:18,540 INFO L87 Difference]: Start difference. First operand 2193 states and 2507 transitions. Second operand 22 states. [2018-11-10 04:51:18,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:18,622 INFO L93 Difference]: Finished difference Result 4263 states and 4892 transitions. [2018-11-10 04:51:18,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-10 04:51:18,623 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 214 [2018-11-10 04:51:18,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:18,625 INFO L225 Difference]: With dead ends: 4263 [2018-11-10 04:51:18,625 INFO L226 Difference]: Without dead ends: 2204 [2018-11-10 04:51:18,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-10 04:51:18,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2018-11-10 04:51:18,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 2200. [2018-11-10 04:51:18,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2018-11-10 04:51:18,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 2514 transitions. [2018-11-10 04:51:18,665 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 2514 transitions. Word has length 214 [2018-11-10 04:51:18,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:18,665 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 2514 transitions. [2018-11-10 04:51:18,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-10 04:51:18,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 2514 transitions. [2018-11-10 04:51:18,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-11-10 04:51:18,667 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:18,667 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:18,667 INFO L424 AbstractCegarLoop]: === Iteration 48 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:18,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:18,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1577273969, now seen corresponding path program 30 times [2018-11-10 04:51:18,671 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:18,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:18,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:18,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:18,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 3165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:19,026 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:19,026 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:19,032 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 04:51:19,081 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-11-10 04:51:19,081 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:19,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:19,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 3165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:19,171 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:19,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-11-10 04:51:19,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-10 04:51:19,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-10 04:51:19,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-11-10 04:51:19,172 INFO L87 Difference]: Start difference. First operand 2200 states and 2514 transitions. Second operand 33 states. [2018-11-10 04:51:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:19,453 INFO L93 Difference]: Finished difference Result 4319 states and 5232 transitions. [2018-11-10 04:51:19,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-10 04:51:19,453 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 219 [2018-11-10 04:51:19,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:19,456 INFO L225 Difference]: With dead ends: 4319 [2018-11-10 04:51:19,456 INFO L226 Difference]: Without dead ends: 4317 [2018-11-10 04:51:19,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-11-10 04:51:19,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4317 states. [2018-11-10 04:51:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4317 to 2280. [2018-11-10 04:51:19,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2280 states. [2018-11-10 04:51:19,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 2606 transitions. [2018-11-10 04:51:19,491 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 2606 transitions. Word has length 219 [2018-11-10 04:51:19,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:19,491 INFO L481 AbstractCegarLoop]: Abstraction has 2280 states and 2606 transitions. [2018-11-10 04:51:19,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-10 04:51:19,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 2606 transitions. [2018-11-10 04:51:19,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-10 04:51:19,493 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:19,493 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 20, 20, 20, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:19,493 INFO L424 AbstractCegarLoop]: === Iteration 49 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:19,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:19,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1735376910, now seen corresponding path program 14 times [2018-11-10 04:51:19,493 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:19,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:19,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:19,494 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:19,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2785 backedges. 1050 proven. 1390 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-10 04:51:19,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:19,689 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:19,699 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:51:19,720 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:51:19,720 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:19,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2785 backedges. 1050 proven. 1390 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-10 04:51:19,759 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:19,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-11-10 04:51:19,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-10 04:51:19,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-10 04:51:19,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-11-10 04:51:19,760 INFO L87 Difference]: Start difference. First operand 2280 states and 2606 transitions. Second operand 23 states. [2018-11-10 04:51:19,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:19,825 INFO L93 Difference]: Finished difference Result 4430 states and 5083 transitions. [2018-11-10 04:51:19,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-10 04:51:19,826 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 221 [2018-11-10 04:51:19,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:19,828 INFO L225 Difference]: With dead ends: 4430 [2018-11-10 04:51:19,828 INFO L226 Difference]: Without dead ends: 2291 [2018-11-10 04:51:19,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-11-10 04:51:19,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2018-11-10 04:51:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2287. [2018-11-10 04:51:19,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2287 states. [2018-11-10 04:51:19,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 2613 transitions. [2018-11-10 04:51:19,853 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 2613 transitions. Word has length 221 [2018-11-10 04:51:19,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:19,853 INFO L481 AbstractCegarLoop]: Abstraction has 2287 states and 2613 transitions. [2018-11-10 04:51:19,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-10 04:51:19,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 2613 transitions. [2018-11-10 04:51:19,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-11-10 04:51:19,855 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:19,855 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:19,855 INFO L424 AbstractCegarLoop]: === Iteration 50 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:19,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:19,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1715343058, now seen corresponding path program 31 times [2018-11-10 04:51:19,856 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:19,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:19,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:19,856 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:19,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 3379 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:20,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:20,201 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:20,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:20,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 3379 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:20,285 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:20,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-11-10 04:51:20,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-10 04:51:20,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-10 04:51:20,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-11-10 04:51:20,286 INFO L87 Difference]: Start difference. First operand 2287 states and 2613 transitions. Second operand 34 states. [2018-11-10 04:51:20,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:20,500 INFO L93 Difference]: Finished difference Result 4487 states and 5435 transitions. [2018-11-10 04:51:20,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-10 04:51:20,501 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 226 [2018-11-10 04:51:20,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:20,503 INFO L225 Difference]: With dead ends: 4487 [2018-11-10 04:51:20,504 INFO L226 Difference]: Without dead ends: 4485 [2018-11-10 04:51:20,505 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-11-10 04:51:20,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4485 states. [2018-11-10 04:51:20,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4485 to 2367. [2018-11-10 04:51:20,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2367 states. [2018-11-10 04:51:20,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 2705 transitions. [2018-11-10 04:51:20,551 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 2705 transitions. Word has length 226 [2018-11-10 04:51:20,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:20,552 INFO L481 AbstractCegarLoop]: Abstraction has 2367 states and 2705 transitions. [2018-11-10 04:51:20,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-10 04:51:20,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 2705 transitions. [2018-11-10 04:51:20,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-11-10 04:51:20,553 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:20,554 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 21, 21, 21, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:20,554 INFO L424 AbstractCegarLoop]: === Iteration 51 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:20,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:20,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1275785263, now seen corresponding path program 15 times [2018-11-10 04:51:20,554 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:20,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:20,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:20,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:20,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2979 backedges. 1101 proven. 1533 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-10 04:51:20,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:20,795 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:20,800 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 04:51:20,832 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-11-10 04:51:20,832 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:20,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2979 backedges. 1271 proven. 454 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2018-11-10 04:51:21,169 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:21,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 14] total 37 [2018-11-10 04:51:21,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-11-10 04:51:21,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-11-10 04:51:21,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-11-10 04:51:21,171 INFO L87 Difference]: Start difference. First operand 2367 states and 2705 transitions. Second operand 37 states. [2018-11-10 04:51:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:21,317 INFO L93 Difference]: Finished difference Result 4927 states and 5679 transitions. [2018-11-10 04:51:21,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-10 04:51:21,318 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 228 [2018-11-10 04:51:21,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:21,321 INFO L225 Difference]: With dead ends: 4927 [2018-11-10 04:51:21,321 INFO L226 Difference]: Without dead ends: 2708 [2018-11-10 04:51:21,323 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-11-10 04:51:21,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2018-11-10 04:51:21,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2676. [2018-11-10 04:51:21,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2676 states. [2018-11-10 04:51:21,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 3057 transitions. [2018-11-10 04:51:21,350 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 3057 transitions. Word has length 228 [2018-11-10 04:51:21,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:21,350 INFO L481 AbstractCegarLoop]: Abstraction has 2676 states and 3057 transitions. [2018-11-10 04:51:21,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-11-10 04:51:21,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 3057 transitions. [2018-11-10 04:51:21,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-11-10 04:51:21,351 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:21,351 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:21,352 INFO L424 AbstractCegarLoop]: === Iteration 52 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:21,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:21,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1265683281, now seen corresponding path program 32 times [2018-11-10 04:51:21,352 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:21,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:21,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:21,353 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:21,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:21,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:21,713 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:21,723 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:51:21,762 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:51:21,763 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:21,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:21,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:21,809 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:21,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-11-10 04:51:21,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-11-10 04:51:21,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-11-10 04:51:21,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-11-10 04:51:21,810 INFO L87 Difference]: Start difference. First operand 2676 states and 3057 transitions. Second operand 35 states. [2018-11-10 04:51:22,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:22,020 INFO L93 Difference]: Finished difference Result 5258 states and 6370 transitions. [2018-11-10 04:51:22,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-11-10 04:51:22,020 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 233 [2018-11-10 04:51:22,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:22,024 INFO L225 Difference]: With dead ends: 5258 [2018-11-10 04:51:22,024 INFO L226 Difference]: Without dead ends: 5256 [2018-11-10 04:51:22,025 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-11-10 04:51:22,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5256 states. [2018-11-10 04:51:22,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5256 to 2770. [2018-11-10 04:51:22,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2770 states. [2018-11-10 04:51:22,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 3165 transitions. [2018-11-10 04:51:22,073 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 3165 transitions. Word has length 233 [2018-11-10 04:51:22,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:22,074 INFO L481 AbstractCegarLoop]: Abstraction has 2770 states and 3165 transitions. [2018-11-10 04:51:22,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-11-10 04:51:22,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 3165 transitions. [2018-11-10 04:51:22,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-11-10 04:51:22,076 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:22,076 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:22,076 INFO L424 AbstractCegarLoop]: === Iteration 53 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:22,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:22,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1873269234, now seen corresponding path program 33 times [2018-11-10 04:51:22,076 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:22,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:22,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:22,077 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:22,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:22,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:22,471 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:22,471 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:22,477 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 04:51:22,515 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-11-10 04:51:22,515 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:22,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:22,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:22,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-11-10 04:51:22,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-11-10 04:51:22,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-11-10 04:51:22,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-11-10 04:51:22,563 INFO L87 Difference]: Start difference. First operand 2770 states and 3165 transitions. Second operand 36 states. [2018-11-10 04:51:22,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:22,749 INFO L93 Difference]: Finished difference Result 5447 states and 6600 transitions. [2018-11-10 04:51:22,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-10 04:51:22,749 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 240 [2018-11-10 04:51:22,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:22,753 INFO L225 Difference]: With dead ends: 5447 [2018-11-10 04:51:22,753 INFO L226 Difference]: Without dead ends: 5445 [2018-11-10 04:51:22,755 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-11-10 04:51:22,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5445 states. [2018-11-10 04:51:22,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5445 to 2864. [2018-11-10 04:51:22,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2864 states. [2018-11-10 04:51:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 3273 transitions. [2018-11-10 04:51:22,803 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 3273 transitions. Word has length 240 [2018-11-10 04:51:22,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:22,803 INFO L481 AbstractCegarLoop]: Abstraction has 2864 states and 3273 transitions. [2018-11-10 04:51:22,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-11-10 04:51:22,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 3273 transitions. [2018-11-10 04:51:22,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-11-10 04:51:22,805 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:22,806 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:22,806 INFO L424 AbstractCegarLoop]: === Iteration 54 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:22,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:22,806 INFO L82 PathProgramCache]: Analyzing trace with hash -188433457, now seen corresponding path program 34 times [2018-11-10 04:51:22,806 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:22,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:22,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:22,807 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:22,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:23,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 4063 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:23,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:23,170 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:23,177 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:51:23,197 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:51:23,197 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:23,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 4063 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:23,246 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:23,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-11-10 04:51:23,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-11-10 04:51:23,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-11-10 04:51:23,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-11-10 04:51:23,247 INFO L87 Difference]: Start difference. First operand 2864 states and 3273 transitions. Second operand 37 states. [2018-11-10 04:51:23,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:23,459 INFO L93 Difference]: Finished difference Result 5636 states and 6830 transitions. [2018-11-10 04:51:23,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-10 04:51:23,460 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 247 [2018-11-10 04:51:23,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:23,463 INFO L225 Difference]: With dead ends: 5636 [2018-11-10 04:51:23,463 INFO L226 Difference]: Without dead ends: 5634 [2018-11-10 04:51:23,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-11-10 04:51:23,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5634 states. [2018-11-10 04:51:23,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5634 to 2958. [2018-11-10 04:51:23,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2958 states. [2018-11-10 04:51:23,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 3381 transitions. [2018-11-10 04:51:23,504 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 3381 transitions. Word has length 247 [2018-11-10 04:51:23,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:23,505 INFO L481 AbstractCegarLoop]: Abstraction has 2958 states and 3381 transitions. [2018-11-10 04:51:23,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-11-10 04:51:23,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 3381 transitions. [2018-11-10 04:51:23,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-11-10 04:51:23,506 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:23,506 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:23,506 INFO L424 AbstractCegarLoop]: === Iteration 55 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:23,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:23,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1431462638, now seen corresponding path program 35 times [2018-11-10 04:51:23,507 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:23,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:23,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:23,507 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:23,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:23,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 4305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:23,918 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:23,918 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:23,923 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 04:51:23,962 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-11-10 04:51:23,963 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:23,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 4305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:24,012 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:24,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-11-10 04:51:24,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-11-10 04:51:24,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-11-10 04:51:24,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-11-10 04:51:24,013 INFO L87 Difference]: Start difference. First operand 2958 states and 3381 transitions. Second operand 38 states. [2018-11-10 04:51:24,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:24,181 INFO L93 Difference]: Finished difference Result 5825 states and 7060 transitions. [2018-11-10 04:51:24,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-10 04:51:24,181 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 254 [2018-11-10 04:51:24,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:24,184 INFO L225 Difference]: With dead ends: 5825 [2018-11-10 04:51:24,185 INFO L226 Difference]: Without dead ends: 5823 [2018-11-10 04:51:24,186 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-11-10 04:51:24,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5823 states. [2018-11-10 04:51:24,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5823 to 3052. [2018-11-10 04:51:24,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3052 states. [2018-11-10 04:51:24,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 3489 transitions. [2018-11-10 04:51:24,230 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 3489 transitions. Word has length 254 [2018-11-10 04:51:24,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:24,230 INFO L481 AbstractCegarLoop]: Abstraction has 3052 states and 3489 transitions. [2018-11-10 04:51:24,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-11-10 04:51:24,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 3489 transitions. [2018-11-10 04:51:24,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-11-10 04:51:24,231 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:24,231 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 23, 23, 23, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:24,231 INFO L424 AbstractCegarLoop]: === Iteration 56 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:24,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:24,232 INFO L82 PathProgramCache]: Analyzing trace with hash -171555119, now seen corresponding path program 16 times [2018-11-10 04:51:24,232 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:24,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:24,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:24,232 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:24,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3777 backedges. 1439 proven. 1840 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2018-11-10 04:51:24,449 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:24,449 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:24,456 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:51:24,476 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:51:24,477 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:24,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:24,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3777 backedges. 1439 proven. 1840 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2018-11-10 04:51:24,520 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:24,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-11-10 04:51:24,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-10 04:51:24,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-10 04:51:24,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-11-10 04:51:24,521 INFO L87 Difference]: Start difference. First operand 3052 states and 3489 transitions. Second operand 26 states. [2018-11-10 04:51:24,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:24,585 INFO L93 Difference]: Finished difference Result 5953 states and 6828 transitions. [2018-11-10 04:51:24,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-10 04:51:24,586 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 256 [2018-11-10 04:51:24,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:24,587 INFO L225 Difference]: With dead ends: 5953 [2018-11-10 04:51:24,587 INFO L226 Difference]: Without dead ends: 3063 [2018-11-10 04:51:24,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-11-10 04:51:24,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3063 states. [2018-11-10 04:51:24,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3063 to 3059. [2018-11-10 04:51:24,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3059 states. [2018-11-10 04:51:24,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 3496 transitions. [2018-11-10 04:51:24,618 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 3496 transitions. Word has length 256 [2018-11-10 04:51:24,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:24,618 INFO L481 AbstractCegarLoop]: Abstraction has 3059 states and 3496 transitions. [2018-11-10 04:51:24,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-10 04:51:24,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 3496 transitions. [2018-11-10 04:51:24,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-11-10 04:51:24,620 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:24,620 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:24,620 INFO L424 AbstractCegarLoop]: === Iteration 57 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:24,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:24,620 INFO L82 PathProgramCache]: Analyzing trace with hash 615467759, now seen corresponding path program 36 times [2018-11-10 04:51:24,620 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:24,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:24,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:24,621 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:24,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 4554 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:25,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:25,050 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:25,055 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 04:51:25,094 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-11-10 04:51:25,094 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:25,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:25,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 4554 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:25,145 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:25,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-11-10 04:51:25,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-11-10 04:51:25,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-11-10 04:51:25,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-11-10 04:51:25,145 INFO L87 Difference]: Start difference. First operand 3059 states and 3496 transitions. Second operand 39 states. [2018-11-10 04:51:25,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:25,335 INFO L93 Difference]: Finished difference Result 6021 states and 7297 transitions. [2018-11-10 04:51:25,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-10 04:51:25,336 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 261 [2018-11-10 04:51:25,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:25,339 INFO L225 Difference]: With dead ends: 6021 [2018-11-10 04:51:25,339 INFO L226 Difference]: Without dead ends: 6019 [2018-11-10 04:51:25,340 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-11-10 04:51:25,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6019 states. [2018-11-10 04:51:25,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6019 to 3153. [2018-11-10 04:51:25,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3153 states. [2018-11-10 04:51:25,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 3604 transitions. [2018-11-10 04:51:25,398 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 3604 transitions. Word has length 261 [2018-11-10 04:51:25,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:25,398 INFO L481 AbstractCegarLoop]: Abstraction has 3153 states and 3604 transitions. [2018-11-10 04:51:25,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-11-10 04:51:25,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 3604 transitions. [2018-11-10 04:51:25,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-11-10 04:51:25,400 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:25,400 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 24, 24, 24, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:25,400 INFO L424 AbstractCegarLoop]: === Iteration 58 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:25,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:25,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1636381330, now seen corresponding path program 17 times [2018-11-10 04:51:25,400 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:25,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:25,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:25,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:25,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4002 backedges. 1500 proven. 2004 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2018-11-10 04:51:25,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:25,614 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:25,619 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 04:51:25,654 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2018-11-10 04:51:25,654 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:25,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4002 backedges. 1500 proven. 2004 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2018-11-10 04:51:25,704 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:25,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-11-10 04:51:25,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-10 04:51:25,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-10 04:51:25,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-11-10 04:51:25,705 INFO L87 Difference]: Start difference. First operand 3153 states and 3604 transitions. Second operand 27 states. [2018-11-10 04:51:25,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:25,774 INFO L93 Difference]: Finished difference Result 6148 states and 7051 transitions. [2018-11-10 04:51:25,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-10 04:51:25,774 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 263 [2018-11-10 04:51:25,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:25,777 INFO L225 Difference]: With dead ends: 6148 [2018-11-10 04:51:25,777 INFO L226 Difference]: Without dead ends: 3164 [2018-11-10 04:51:25,779 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-11-10 04:51:25,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2018-11-10 04:51:25,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 3160. [2018-11-10 04:51:25,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3160 states. [2018-11-10 04:51:25,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 3611 transitions. [2018-11-10 04:51:25,814 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 3611 transitions. Word has length 263 [2018-11-10 04:51:25,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:25,814 INFO L481 AbstractCegarLoop]: Abstraction has 3160 states and 3611 transitions. [2018-11-10 04:51:25,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-10 04:51:25,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 3611 transitions. [2018-11-10 04:51:25,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-11-10 04:51:25,817 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:25,817 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:25,817 INFO L424 AbstractCegarLoop]: === Iteration 59 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:25,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:25,817 INFO L82 PathProgramCache]: Analyzing trace with hash 241078222, now seen corresponding path program 37 times [2018-11-10 04:51:25,817 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:25,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:25,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:25,818 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:25,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:26,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 4810 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:26,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:26,235 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:26,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:26,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:26,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 4810 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:26,317 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:26,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-11-10 04:51:26,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-11-10 04:51:26,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-11-10 04:51:26,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-11-10 04:51:26,318 INFO L87 Difference]: Start difference. First operand 3160 states and 3611 transitions. Second operand 40 states. [2018-11-10 04:51:26,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:26,516 INFO L93 Difference]: Finished difference Result 6217 states and 7534 transitions. [2018-11-10 04:51:26,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-10 04:51:26,517 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 268 [2018-11-10 04:51:26,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:26,520 INFO L225 Difference]: With dead ends: 6217 [2018-11-10 04:51:26,520 INFO L226 Difference]: Without dead ends: 6215 [2018-11-10 04:51:26,521 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-11-10 04:51:26,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6215 states. [2018-11-10 04:51:26,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6215 to 3254. [2018-11-10 04:51:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3254 states. [2018-11-10 04:51:26,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 3719 transitions. [2018-11-10 04:51:26,569 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 3719 transitions. Word has length 268 [2018-11-10 04:51:26,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:26,570 INFO L481 AbstractCegarLoop]: Abstraction has 3254 states and 3719 transitions. [2018-11-10 04:51:26,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-11-10 04:51:26,570 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 3719 transitions. [2018-11-10 04:51:26,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-11-10 04:51:26,571 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:26,571 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 25, 25, 25, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:26,571 INFO L424 AbstractCegarLoop]: === Iteration 60 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:26,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:26,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1669678159, now seen corresponding path program 18 times [2018-11-10 04:51:26,571 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:26,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:26,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:26,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:26,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1561 proven. 2175 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2018-11-10 04:51:26,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:26,805 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:26,813 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 04:51:26,848 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2018-11-10 04:51:26,848 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:26,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1767 proven. 627 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2018-11-10 04:51:27,121 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:27,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 16] total 43 [2018-11-10 04:51:27,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-11-10 04:51:27,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-11-10 04:51:27,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-11-10 04:51:27,122 INFO L87 Difference]: Start difference. First operand 3254 states and 3719 transitions. Second operand 43 states. [2018-11-10 04:51:27,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:27,246 INFO L93 Difference]: Finished difference Result 6735 states and 7755 transitions. [2018-11-10 04:51:27,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-11-10 04:51:27,246 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 270 [2018-11-10 04:51:27,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:27,249 INFO L225 Difference]: With dead ends: 6735 [2018-11-10 04:51:27,249 INFO L226 Difference]: Without dead ends: 3657 [2018-11-10 04:51:27,252 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-11-10 04:51:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3657 states. [2018-11-10 04:51:27,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3657 to 3619. [2018-11-10 04:51:27,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3619 states. [2018-11-10 04:51:27,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3619 states to 3619 states and 4135 transitions. [2018-11-10 04:51:27,290 INFO L78 Accepts]: Start accepts. Automaton has 3619 states and 4135 transitions. Word has length 270 [2018-11-10 04:51:27,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:27,290 INFO L481 AbstractCegarLoop]: Abstraction has 3619 states and 4135 transitions. [2018-11-10 04:51:27,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-11-10 04:51:27,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3619 states and 4135 transitions. [2018-11-10 04:51:27,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-11-10 04:51:27,292 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:27,292 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:27,293 INFO L424 AbstractCegarLoop]: === Iteration 61 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:27,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:27,293 INFO L82 PathProgramCache]: Analyzing trace with hash -18816497, now seen corresponding path program 38 times [2018-11-10 04:51:27,293 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:27,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:27,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:27,294 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:27,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 5073 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:27,733 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:27,733 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:27,740 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:51:27,763 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:51:27,763 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:27,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 5073 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:27,819 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:27,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-11-10 04:51:27,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-11-10 04:51:27,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-11-10 04:51:27,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-11-10 04:51:27,820 INFO L87 Difference]: Start difference. First operand 3619 states and 4135 transitions. Second operand 41 states. [2018-11-10 04:51:28,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:28,042 INFO L93 Difference]: Finished difference Result 7128 states and 8639 transitions. [2018-11-10 04:51:28,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-11-10 04:51:28,043 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 275 [2018-11-10 04:51:28,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:28,047 INFO L225 Difference]: With dead ends: 7128 [2018-11-10 04:51:28,047 INFO L226 Difference]: Without dead ends: 7126 [2018-11-10 04:51:28,048 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-11-10 04:51:28,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7126 states. [2018-11-10 04:51:28,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7126 to 3727. [2018-11-10 04:51:28,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3727 states. [2018-11-10 04:51:28,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 4259 transitions. [2018-11-10 04:51:28,108 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 4259 transitions. Word has length 275 [2018-11-10 04:51:28,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:28,108 INFO L481 AbstractCegarLoop]: Abstraction has 3727 states and 4259 transitions. [2018-11-10 04:51:28,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-11-10 04:51:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 4259 transitions. [2018-11-10 04:51:28,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-11-10 04:51:28,110 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:28,110 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:28,110 INFO L424 AbstractCegarLoop]: === Iteration 62 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:28,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:28,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1487582382, now seen corresponding path program 39 times [2018-11-10 04:51:28,110 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:28,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:28,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:28,111 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:28,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 5343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:28,578 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:28,578 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:28,584 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 04:51:28,627 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-11-10 04:51:28,627 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:28,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:28,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 5343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:28,683 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:28,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-11-10 04:51:28,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-11-10 04:51:28,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-11-10 04:51:28,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-11-10 04:51:28,684 INFO L87 Difference]: Start difference. First operand 3727 states and 4259 transitions. Second operand 42 states. [2018-11-10 04:51:28,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:28,928 INFO L93 Difference]: Finished difference Result 7345 states and 8903 transitions. [2018-11-10 04:51:28,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-10 04:51:28,929 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 282 [2018-11-10 04:51:28,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:28,932 INFO L225 Difference]: With dead ends: 7345 [2018-11-10 04:51:28,933 INFO L226 Difference]: Without dead ends: 7343 [2018-11-10 04:51:28,934 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-11-10 04:51:28,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2018-11-10 04:51:28,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 3835. [2018-11-10 04:51:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3835 states. [2018-11-10 04:51:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3835 states to 3835 states and 4383 transitions. [2018-11-10 04:51:28,992 INFO L78 Accepts]: Start accepts. Automaton has 3835 states and 4383 transitions. Word has length 282 [2018-11-10 04:51:28,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:28,992 INFO L481 AbstractCegarLoop]: Abstraction has 3835 states and 4383 transitions. [2018-11-10 04:51:28,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-11-10 04:51:28,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3835 states and 4383 transitions. [2018-11-10 04:51:28,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-11-10 04:51:28,993 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:28,993 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:28,994 INFO L424 AbstractCegarLoop]: === Iteration 63 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:28,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:28,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1449885999, now seen corresponding path program 40 times [2018-11-10 04:51:28,994 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:28,994 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:28,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:28,994 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:28,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:29,445 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 5620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:29,445 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:29,445 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:29,452 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:51:29,477 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:51:29,477 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:29,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 5620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:29,536 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:29,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-11-10 04:51:29,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-11-10 04:51:29,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-11-10 04:51:29,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-11-10 04:51:29,537 INFO L87 Difference]: Start difference. First operand 3835 states and 4383 transitions. Second operand 43 states. [2018-11-10 04:51:29,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:29,828 INFO L93 Difference]: Finished difference Result 7562 states and 9167 transitions. [2018-11-10 04:51:29,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-11-10 04:51:29,828 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 289 [2018-11-10 04:51:29,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:29,832 INFO L225 Difference]: With dead ends: 7562 [2018-11-10 04:51:29,832 INFO L226 Difference]: Without dead ends: 7560 [2018-11-10 04:51:29,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-11-10 04:51:29,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7560 states. [2018-11-10 04:51:29,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7560 to 3943. [2018-11-10 04:51:29,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3943 states. [2018-11-10 04:51:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3943 states to 3943 states and 4507 transitions. [2018-11-10 04:51:29,902 INFO L78 Accepts]: Start accepts. Automaton has 3943 states and 4507 transitions. Word has length 289 [2018-11-10 04:51:29,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:29,903 INFO L481 AbstractCegarLoop]: Abstraction has 3943 states and 4507 transitions. [2018-11-10 04:51:29,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-11-10 04:51:29,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3943 states and 4507 transitions. [2018-11-10 04:51:29,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-11-10 04:51:29,904 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:29,905 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:29,905 INFO L424 AbstractCegarLoop]: === Iteration 64 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:29,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:29,905 INFO L82 PathProgramCache]: Analyzing trace with hash 686084494, now seen corresponding path program 41 times [2018-11-10 04:51:29,905 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:29,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:29,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:29,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:29,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 5904 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:30,378 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:30,378 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:30,385 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 04:51:30,431 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-11-10 04:51:30,431 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:30,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 5904 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:30,498 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:30,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-11-10 04:51:30,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-11-10 04:51:30,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-11-10 04:51:30,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-11-10 04:51:30,498 INFO L87 Difference]: Start difference. First operand 3943 states and 4507 transitions. Second operand 44 states. [2018-11-10 04:51:30,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:30,812 INFO L93 Difference]: Finished difference Result 7779 states and 9431 transitions. [2018-11-10 04:51:30,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-11-10 04:51:30,812 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 296 [2018-11-10 04:51:30,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:30,816 INFO L225 Difference]: With dead ends: 7779 [2018-11-10 04:51:30,817 INFO L226 Difference]: Without dead ends: 7777 [2018-11-10 04:51:30,818 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-11-10 04:51:30,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7777 states. [2018-11-10 04:51:30,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7777 to 4051. [2018-11-10 04:51:30,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4051 states. [2018-11-10 04:51:30,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4051 states to 4051 states and 4631 transitions. [2018-11-10 04:51:30,882 INFO L78 Accepts]: Start accepts. Automaton has 4051 states and 4631 transitions. Word has length 296 [2018-11-10 04:51:30,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:30,882 INFO L481 AbstractCegarLoop]: Abstraction has 4051 states and 4631 transitions. [2018-11-10 04:51:30,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-11-10 04:51:30,882 INFO L276 IsEmpty]: Start isEmpty. Operand 4051 states and 4631 transitions. [2018-11-10 04:51:30,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-11-10 04:51:30,885 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:30,885 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 27, 27, 27, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:30,885 INFO L424 AbstractCegarLoop]: === Iteration 65 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:30,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:30,886 INFO L82 PathProgramCache]: Analyzing trace with hash 2087162545, now seen corresponding path program 19 times [2018-11-10 04:51:30,886 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:30,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:30,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:30,887 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:30,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:31,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5176 backedges. 1959 proven. 2538 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2018-11-10 04:51:31,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:31,132 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:31,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:31,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5176 backedges. 1959 proven. 2538 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2018-11-10 04:51:31,215 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:31,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-11-10 04:51:31,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-10 04:51:31,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-10 04:51:31,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-11-10 04:51:31,216 INFO L87 Difference]: Start difference. First operand 4051 states and 4631 transitions. Second operand 30 states. [2018-11-10 04:51:31,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:31,290 INFO L93 Difference]: Finished difference Result 7923 states and 9084 transitions. [2018-11-10 04:51:31,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-10 04:51:31,291 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 298 [2018-11-10 04:51:31,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:31,293 INFO L225 Difference]: With dead ends: 7923 [2018-11-10 04:51:31,293 INFO L226 Difference]: Without dead ends: 4062 [2018-11-10 04:51:31,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-11-10 04:51:31,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2018-11-10 04:51:31,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 4058. [2018-11-10 04:51:31,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4058 states. [2018-11-10 04:51:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4058 states to 4058 states and 4638 transitions. [2018-11-10 04:51:31,338 INFO L78 Accepts]: Start accepts. Automaton has 4058 states and 4638 transitions. Word has length 298 [2018-11-10 04:51:31,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:31,338 INFO L481 AbstractCegarLoop]: Abstraction has 4058 states and 4638 transitions. [2018-11-10 04:51:31,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-11-10 04:51:31,338 INFO L276 IsEmpty]: Start isEmpty. Operand 4058 states and 4638 transitions. [2018-11-10 04:51:31,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-11-10 04:51:31,340 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:31,340 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:31,340 INFO L424 AbstractCegarLoop]: === Iteration 66 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:31,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:31,340 INFO L82 PathProgramCache]: Analyzing trace with hash 920725583, now seen corresponding path program 42 times [2018-11-10 04:51:31,340 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:31,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:31,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:31,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:31,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 6195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:31,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:31,839 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:31,846 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 04:51:31,893 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-11-10 04:51:31,893 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:31,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:31,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 6195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:31,955 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:31,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-11-10 04:51:31,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-11-10 04:51:31,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-11-10 04:51:31,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-11-10 04:51:31,956 INFO L87 Difference]: Start difference. First operand 4058 states and 4638 transitions. Second operand 45 states. [2018-11-10 04:51:32,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:32,248 INFO L93 Difference]: Finished difference Result 8003 states and 9702 transitions. [2018-11-10 04:51:32,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-11-10 04:51:32,248 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 303 [2018-11-10 04:51:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:32,253 INFO L225 Difference]: With dead ends: 8003 [2018-11-10 04:51:32,253 INFO L226 Difference]: Without dead ends: 8001 [2018-11-10 04:51:32,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-11-10 04:51:32,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8001 states. [2018-11-10 04:51:32,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8001 to 4166. [2018-11-10 04:51:32,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4166 states. [2018-11-10 04:51:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4166 states to 4166 states and 4762 transitions. [2018-11-10 04:51:32,322 INFO L78 Accepts]: Start accepts. Automaton has 4166 states and 4762 transitions. Word has length 303 [2018-11-10 04:51:32,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:32,322 INFO L481 AbstractCegarLoop]: Abstraction has 4166 states and 4762 transitions. [2018-11-10 04:51:32,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-11-10 04:51:32,322 INFO L276 IsEmpty]: Start isEmpty. Operand 4166 states and 4762 transitions. [2018-11-10 04:51:32,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-11-10 04:51:32,324 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:32,324 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 28, 28, 28, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:32,324 INFO L424 AbstractCegarLoop]: === Iteration 67 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:32,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:32,324 INFO L82 PathProgramCache]: Analyzing trace with hash -56017614, now seen corresponding path program 20 times [2018-11-10 04:51:32,324 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:32,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:32,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:32,325 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:32,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:32,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5439 backedges. 2030 proven. 2730 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2018-11-10 04:51:32,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:32,587 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:32,593 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:51:32,618 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:51:32,618 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:32,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:32,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5439 backedges. 2030 proven. 2730 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2018-11-10 04:51:32,673 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:32,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-11-10 04:51:32,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-10 04:51:32,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-10 04:51:32,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-11-10 04:51:32,674 INFO L87 Difference]: Start difference. First operand 4166 states and 4762 transitions. Second operand 31 states. [2018-11-10 04:51:32,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:32,755 INFO L93 Difference]: Finished difference Result 8146 states and 9339 transitions. [2018-11-10 04:51:32,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-10 04:51:32,755 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 305 [2018-11-10 04:51:32,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:32,757 INFO L225 Difference]: With dead ends: 8146 [2018-11-10 04:51:32,757 INFO L226 Difference]: Without dead ends: 4177 [2018-11-10 04:51:32,760 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-11-10 04:51:32,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4177 states. [2018-11-10 04:51:32,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4177 to 4173. [2018-11-10 04:51:32,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4173 states. [2018-11-10 04:51:32,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4173 states to 4173 states and 4769 transitions. [2018-11-10 04:51:32,813 INFO L78 Accepts]: Start accepts. Automaton has 4173 states and 4769 transitions. Word has length 305 [2018-11-10 04:51:32,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:32,814 INFO L481 AbstractCegarLoop]: Abstraction has 4173 states and 4769 transitions. [2018-11-10 04:51:32,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-10 04:51:32,814 INFO L276 IsEmpty]: Start isEmpty. Operand 4173 states and 4769 transitions. [2018-11-10 04:51:32,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-11-10 04:51:32,815 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:32,815 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:32,815 INFO L424 AbstractCegarLoop]: === Iteration 68 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:32,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:32,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1422203282, now seen corresponding path program 43 times [2018-11-10 04:51:32,816 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:32,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:32,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:32,816 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:32,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:33,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 6493 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:33,312 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:33,312 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:33,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:33,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:33,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 6493 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:33,439 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:33,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-11-10 04:51:33,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-11-10 04:51:33,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-11-10 04:51:33,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-11-10 04:51:33,440 INFO L87 Difference]: Start difference. First operand 4173 states and 4769 transitions. Second operand 46 states. [2018-11-10 04:51:33,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:33,689 INFO L93 Difference]: Finished difference Result 8227 states and 9973 transitions. [2018-11-10 04:51:33,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-10 04:51:33,689 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 310 [2018-11-10 04:51:33,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:33,694 INFO L225 Difference]: With dead ends: 8227 [2018-11-10 04:51:33,694 INFO L226 Difference]: Without dead ends: 8225 [2018-11-10 04:51:33,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-11-10 04:51:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8225 states. [2018-11-10 04:51:33,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8225 to 4281. [2018-11-10 04:51:33,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4281 states. [2018-11-10 04:51:33,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4281 states to 4281 states and 4893 transitions. [2018-11-10 04:51:33,770 INFO L78 Accepts]: Start accepts. Automaton has 4281 states and 4893 transitions. Word has length 310 [2018-11-10 04:51:33,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:33,771 INFO L481 AbstractCegarLoop]: Abstraction has 4281 states and 4893 transitions. [2018-11-10 04:51:33,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-11-10 04:51:33,771 INFO L276 IsEmpty]: Start isEmpty. Operand 4281 states and 4893 transitions. [2018-11-10 04:51:33,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-11-10 04:51:33,773 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:33,774 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 29, 29, 29, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:33,774 INFO L424 AbstractCegarLoop]: === Iteration 69 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:33,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:33,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1047793775, now seen corresponding path program 21 times [2018-11-10 04:51:33,774 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:33,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:33,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:33,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:33,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5709 backedges. 2101 proven. 2929 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2018-11-10 04:51:34,053 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:34,053 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:34,060 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 04:51:34,084 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-11-10 04:51:34,084 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:34,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:34,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5709 backedges. 2343 proven. 828 refuted. 0 times theorem prover too weak. 2538 trivial. 0 not checked. [2018-11-10 04:51:34,429 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:34,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 18] total 49 [2018-11-10 04:51:34,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-11-10 04:51:34,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-11-10 04:51:34,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-11-10 04:51:34,430 INFO L87 Difference]: Start difference. First operand 4281 states and 4893 transitions. Second operand 49 states. [2018-11-10 04:51:34,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:34,582 INFO L93 Difference]: Finished difference Result 8823 states and 10151 transitions. [2018-11-10 04:51:34,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-10 04:51:34,583 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 312 [2018-11-10 04:51:34,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:34,586 INFO L225 Difference]: With dead ends: 8823 [2018-11-10 04:51:34,587 INFO L226 Difference]: Without dead ends: 4746 [2018-11-10 04:51:34,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-11-10 04:51:34,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4746 states. [2018-11-10 04:51:34,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4746 to 4702. [2018-11-10 04:51:34,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4702 states. [2018-11-10 04:51:34,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4702 states to 4702 states and 5373 transitions. [2018-11-10 04:51:34,651 INFO L78 Accepts]: Start accepts. Automaton has 4702 states and 5373 transitions. Word has length 312 [2018-11-10 04:51:34,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:34,651 INFO L481 AbstractCegarLoop]: Abstraction has 4702 states and 5373 transitions. [2018-11-10 04:51:34,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-11-10 04:51:34,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4702 states and 5373 transitions. [2018-11-10 04:51:34,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-11-10 04:51:34,653 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:34,653 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:34,653 INFO L424 AbstractCegarLoop]: === Iteration 70 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:34,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:34,654 INFO L82 PathProgramCache]: Analyzing trace with hash 72603503, now seen corresponding path program 44 times [2018-11-10 04:51:34,654 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:34,654 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:34,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:34,654 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:34,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 6798 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:35,194 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:35,194 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:35,212 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:51:35,240 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:51:35,240 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:35,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 6798 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:35,320 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:35,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-11-10 04:51:35,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-11-10 04:51:35,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-11-10 04:51:35,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-11-10 04:51:35,321 INFO L87 Difference]: Start difference. First operand 4702 states and 5373 transitions. Second operand 47 states. [2018-11-10 04:51:35,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:35,640 INFO L93 Difference]: Finished difference Result 9278 states and 11248 transitions. [2018-11-10 04:51:35,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-11-10 04:51:35,640 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 317 [2018-11-10 04:51:35,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:35,646 INFO L225 Difference]: With dead ends: 9278 [2018-11-10 04:51:35,646 INFO L226 Difference]: Without dead ends: 9276 [2018-11-10 04:51:35,648 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-11-10 04:51:35,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9276 states. [2018-11-10 04:51:35,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9276 to 4824. [2018-11-10 04:51:35,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4824 states. [2018-11-10 04:51:35,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 5513 transitions. [2018-11-10 04:51:35,730 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 5513 transitions. Word has length 317 [2018-11-10 04:51:35,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:35,730 INFO L481 AbstractCegarLoop]: Abstraction has 4824 states and 5513 transitions. [2018-11-10 04:51:35,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-11-10 04:51:35,730 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 5513 transitions. [2018-11-10 04:51:35,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-11-10 04:51:35,733 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:35,733 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:35,733 INFO L424 AbstractCegarLoop]: === Iteration 71 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:35,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:35,734 INFO L82 PathProgramCache]: Analyzing trace with hash 593163086, now seen corresponding path program 45 times [2018-11-10 04:51:35,734 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:35,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:35,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:35,734 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:35,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:36,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 0 proven. 7110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:36,342 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:36,342 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:36,348 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 04:51:36,401 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-11-10 04:51:36,401 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:36,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 0 proven. 7110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:36,468 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:36,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-11-10 04:51:36,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-11-10 04:51:36,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-11-10 04:51:36,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-11-10 04:51:36,469 INFO L87 Difference]: Start difference. First operand 4824 states and 5513 transitions. Second operand 48 states. [2018-11-10 04:51:36,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:36,770 INFO L93 Difference]: Finished difference Result 9523 states and 11546 transitions. [2018-11-10 04:51:36,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-10 04:51:36,771 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 324 [2018-11-10 04:51:36,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:36,777 INFO L225 Difference]: With dead ends: 9523 [2018-11-10 04:51:36,777 INFO L226 Difference]: Without dead ends: 9521 [2018-11-10 04:51:36,779 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-11-10 04:51:36,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9521 states. [2018-11-10 04:51:36,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9521 to 4946. [2018-11-10 04:51:36,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4946 states. [2018-11-10 04:51:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4946 states to 4946 states and 5653 transitions. [2018-11-10 04:51:36,870 INFO L78 Accepts]: Start accepts. Automaton has 4946 states and 5653 transitions. Word has length 324 [2018-11-10 04:51:36,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:36,870 INFO L481 AbstractCegarLoop]: Abstraction has 4946 states and 5653 transitions. [2018-11-10 04:51:36,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-11-10 04:51:36,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4946 states and 5653 transitions. [2018-11-10 04:51:36,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-11-10 04:51:36,873 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:36,873 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:36,873 INFO L424 AbstractCegarLoop]: === Iteration 72 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:36,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:36,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1688891761, now seen corresponding path program 46 times [2018-11-10 04:51:36,874 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:36,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:36,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:36,874 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:36,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:37,535 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:37,535 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:37,542 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:51:37,570 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:51:37,570 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:37,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:37,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:37,640 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:37,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-11-10 04:51:37,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-11-10 04:51:37,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-11-10 04:51:37,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-11-10 04:51:37,641 INFO L87 Difference]: Start difference. First operand 4946 states and 5653 transitions. Second operand 49 states. [2018-11-10 04:51:37,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:37,898 INFO L93 Difference]: Finished difference Result 9768 states and 11844 transitions. [2018-11-10 04:51:37,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-10 04:51:37,898 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 331 [2018-11-10 04:51:37,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:37,904 INFO L225 Difference]: With dead ends: 9768 [2018-11-10 04:51:37,904 INFO L226 Difference]: Without dead ends: 9766 [2018-11-10 04:51:37,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-11-10 04:51:37,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9766 states. [2018-11-10 04:51:37,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9766 to 5068. [2018-11-10 04:51:37,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5068 states. [2018-11-10 04:51:37,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5068 states to 5068 states and 5793 transitions. [2018-11-10 04:51:37,993 INFO L78 Accepts]: Start accepts. Automaton has 5068 states and 5793 transitions. Word has length 331 [2018-11-10 04:51:37,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:37,993 INFO L481 AbstractCegarLoop]: Abstraction has 5068 states and 5793 transitions. [2018-11-10 04:51:37,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-11-10 04:51:37,993 INFO L276 IsEmpty]: Start isEmpty. Operand 5068 states and 5793 transitions. [2018-11-10 04:51:37,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-11-10 04:51:37,995 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:37,995 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:37,995 INFO L424 AbstractCegarLoop]: === Iteration 73 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:37,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:37,995 INFO L82 PathProgramCache]: Analyzing trace with hash -864880594, now seen corresponding path program 47 times [2018-11-10 04:51:37,995 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:37,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:37,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:37,996 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:37,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:38,620 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 7755 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:38,620 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:38,620 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:38,627 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 04:51:38,685 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-11-10 04:51:38,685 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:38,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 7755 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:38,774 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:38,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-11-10 04:51:38,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-11-10 04:51:38,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-11-10 04:51:38,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-11-10 04:51:38,775 INFO L87 Difference]: Start difference. First operand 5068 states and 5793 transitions. Second operand 50 states. [2018-11-10 04:51:39,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:39,069 INFO L93 Difference]: Finished difference Result 10013 states and 12142 transitions. [2018-11-10 04:51:39,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-11-10 04:51:39,069 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 338 [2018-11-10 04:51:39,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:39,075 INFO L225 Difference]: With dead ends: 10013 [2018-11-10 04:51:39,075 INFO L226 Difference]: Without dead ends: 10011 [2018-11-10 04:51:39,076 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-11-10 04:51:39,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10011 states. [2018-11-10 04:51:39,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10011 to 5190. [2018-11-10 04:51:39,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5190 states. [2018-11-10 04:51:39,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5190 states to 5190 states and 5933 transitions. [2018-11-10 04:51:39,164 INFO L78 Accepts]: Start accepts. Automaton has 5190 states and 5933 transitions. Word has length 338 [2018-11-10 04:51:39,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:39,164 INFO L481 AbstractCegarLoop]: Abstraction has 5190 states and 5933 transitions. [2018-11-10 04:51:39,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-11-10 04:51:39,164 INFO L276 IsEmpty]: Start isEmpty. Operand 5190 states and 5933 transitions. [2018-11-10 04:51:39,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-11-10 04:51:39,166 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:39,166 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 31, 31, 31, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:39,167 INFO L424 AbstractCegarLoop]: === Iteration 74 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:39,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:39,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1592026769, now seen corresponding path program 22 times [2018-11-10 04:51:39,167 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:39,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:39,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:39,168 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:39,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:39,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6795 backedges. 2559 proven. 3348 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2018-11-10 04:51:39,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:39,478 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:39,484 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:51:39,511 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:51:39,511 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:39,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 6795 backedges. 2559 proven. 3348 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2018-11-10 04:51:39,573 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:39,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-11-10 04:51:39,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-10 04:51:39,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-10 04:51:39,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-11-10 04:51:39,574 INFO L87 Difference]: Start difference. First operand 5190 states and 5933 transitions. Second operand 34 states. [2018-11-10 04:51:39,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:39,669 INFO L93 Difference]: Finished difference Result 10173 states and 11660 transitions. [2018-11-10 04:51:39,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-10 04:51:39,670 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 340 [2018-11-10 04:51:39,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:39,674 INFO L225 Difference]: With dead ends: 10173 [2018-11-10 04:51:39,674 INFO L226 Difference]: Without dead ends: 5201 [2018-11-10 04:51:39,678 INFO L605 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 [2018-11-10 04:51:39,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5201 states. [2018-11-10 04:51:39,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5201 to 5197. [2018-11-10 04:51:39,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5197 states. [2018-11-10 04:51:39,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 5940 transitions. [2018-11-10 04:51:39,735 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 5940 transitions. Word has length 340 [2018-11-10 04:51:39,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:39,735 INFO L481 AbstractCegarLoop]: Abstraction has 5197 states and 5940 transitions. [2018-11-10 04:51:39,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-10 04:51:39,735 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 5940 transitions. [2018-11-10 04:51:39,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-11-10 04:51:39,738 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:39,738 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:39,738 INFO L424 AbstractCegarLoop]: === Iteration 75 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:39,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:39,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1895321007, now seen corresponding path program 48 times [2018-11-10 04:51:39,739 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:39,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:39,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:39,740 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:39,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 0 proven. 8088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:40,370 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:40,370 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:40,389 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 04:51:40,474 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-11-10 04:51:40,475 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:40,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:40,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 0 proven. 8088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:40,549 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:40,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-11-10 04:51:40,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-11-10 04:51:40,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-11-10 04:51:40,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-11-10 04:51:40,550 INFO L87 Difference]: Start difference. First operand 5197 states and 5940 transitions. Second operand 51 states. [2018-11-10 04:51:40,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:40,813 INFO L93 Difference]: Finished difference Result 10265 states and 12447 transitions. [2018-11-10 04:51:40,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-11-10 04:51:40,814 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 345 [2018-11-10 04:51:40,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:40,819 INFO L225 Difference]: With dead ends: 10265 [2018-11-10 04:51:40,819 INFO L226 Difference]: Without dead ends: 10263 [2018-11-10 04:51:40,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-11-10 04:51:40,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10263 states. [2018-11-10 04:51:40,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10263 to 5319. [2018-11-10 04:51:40,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5319 states. [2018-11-10 04:51:40,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 6080 transitions. [2018-11-10 04:51:40,912 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 6080 transitions. Word has length 345 [2018-11-10 04:51:40,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:40,913 INFO L481 AbstractCegarLoop]: Abstraction has 5319 states and 6080 transitions. [2018-11-10 04:51:40,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-11-10 04:51:40,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 6080 transitions. [2018-11-10 04:51:40,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-11-10 04:51:40,915 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:40,915 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 32, 32, 32, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:40,915 INFO L424 AbstractCegarLoop]: === Iteration 76 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:40,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:40,915 INFO L82 PathProgramCache]: Analyzing trace with hash -144023598, now seen corresponding path program 23 times [2018-11-10 04:51:40,915 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:40,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:40,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:40,916 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:40,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7096 backedges. 2640 proven. 3568 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2018-11-10 04:51:41,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:41,235 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:41,241 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 04:51:41,289 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2018-11-10 04:51:41,289 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:41,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:41,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7096 backedges. 2640 proven. 3568 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2018-11-10 04:51:41,354 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:41,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-11-10 04:51:41,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-11-10 04:51:41,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-11-10 04:51:41,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-11-10 04:51:41,355 INFO L87 Difference]: Start difference. First operand 5319 states and 6080 transitions. Second operand 35 states. [2018-11-10 04:51:41,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:41,458 INFO L93 Difference]: Finished difference Result 10424 states and 11947 transitions. [2018-11-10 04:51:41,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-11-10 04:51:41,458 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 347 [2018-11-10 04:51:41,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:41,462 INFO L225 Difference]: With dead ends: 10424 [2018-11-10 04:51:41,462 INFO L226 Difference]: Without dead ends: 5330 [2018-11-10 04:51:41,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-11-10 04:51:41,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5330 states. [2018-11-10 04:51:41,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5330 to 5326. [2018-11-10 04:51:41,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5326 states. [2018-11-10 04:51:41,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5326 states to 5326 states and 6087 transitions. [2018-11-10 04:51:41,523 INFO L78 Accepts]: Start accepts. Automaton has 5326 states and 6087 transitions. Word has length 347 [2018-11-10 04:51:41,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:41,523 INFO L481 AbstractCegarLoop]: Abstraction has 5326 states and 6087 transitions. [2018-11-10 04:51:41,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-11-10 04:51:41,523 INFO L276 IsEmpty]: Start isEmpty. Operand 5326 states and 6087 transitions. [2018-11-10 04:51:41,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-11-10 04:51:41,525 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:41,526 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:41,526 INFO L424 AbstractCegarLoop]: === Iteration 77 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:41,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:41,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1187973874, now seen corresponding path program 49 times [2018-11-10 04:51:41,526 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:41,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:41,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:41,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:41,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 8428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:42,205 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:42,205 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:42,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:42,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 8428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:42,315 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:42,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-11-10 04:51:42,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-11-10 04:51:42,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-11-10 04:51:42,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-11-10 04:51:42,316 INFO L87 Difference]: Start difference. First operand 5326 states and 6087 transitions. Second operand 52 states. [2018-11-10 04:51:42,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:42,732 INFO L93 Difference]: Finished difference Result 10517 states and 12752 transitions. [2018-11-10 04:51:42,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-11-10 04:51:42,732 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 352 [2018-11-10 04:51:42,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:42,739 INFO L225 Difference]: With dead ends: 10517 [2018-11-10 04:51:42,739 INFO L226 Difference]: Without dead ends: 10515 [2018-11-10 04:51:42,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-11-10 04:51:42,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2018-11-10 04:51:42,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 5448. [2018-11-10 04:51:42,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5448 states. [2018-11-10 04:51:42,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5448 states to 5448 states and 6227 transitions. [2018-11-10 04:51:42,847 INFO L78 Accepts]: Start accepts. Automaton has 5448 states and 6227 transitions. Word has length 352 [2018-11-10 04:51:42,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:42,847 INFO L481 AbstractCegarLoop]: Abstraction has 5448 states and 6227 transitions. [2018-11-10 04:51:42,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-11-10 04:51:42,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5448 states and 6227 transitions. [2018-11-10 04:51:42,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-11-10 04:51:42,851 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:42,851 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 33, 33, 33, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:42,851 INFO L424 AbstractCegarLoop]: === Iteration 78 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:42,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:42,852 INFO L82 PathProgramCache]: Analyzing trace with hash 337030001, now seen corresponding path program 24 times [2018-11-10 04:51:42,852 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:42,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:42,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:42,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:42,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7404 backedges. 2721 proven. 3795 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2018-11-10 04:51:43,207 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:43,207 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:43,213 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 04:51:43,260 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2018-11-10 04:51:43,260 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:43,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:43,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7404 backedges. 2999 proven. 1057 refuted. 0 times theorem prover too weak. 3348 trivial. 0 not checked. [2018-11-10 04:51:43,683 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:43,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 20] total 55 [2018-11-10 04:51:43,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-11-10 04:51:43,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-11-10 04:51:43,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-11-10 04:51:43,684 INFO L87 Difference]: Start difference. First operand 5448 states and 6227 transitions. Second operand 55 states. [2018-11-10 04:51:43,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:43,882 INFO L93 Difference]: Finished difference Result 11191 states and 12867 transitions. [2018-11-10 04:51:43,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-11-10 04:51:43,883 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 354 [2018-11-10 04:51:43,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:43,887 INFO L225 Difference]: With dead ends: 11191 [2018-11-10 04:51:43,887 INFO L226 Difference]: Without dead ends: 5975 [2018-11-10 04:51:43,891 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-11-10 04:51:43,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5975 states. [2018-11-10 04:51:43,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5975 to 5925. [2018-11-10 04:51:43,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5925 states. [2018-11-10 04:51:43,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5925 states to 5925 states and 6771 transitions. [2018-11-10 04:51:43,981 INFO L78 Accepts]: Start accepts. Automaton has 5925 states and 6771 transitions. Word has length 354 [2018-11-10 04:51:43,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:43,981 INFO L481 AbstractCegarLoop]: Abstraction has 5925 states and 6771 transitions. [2018-11-10 04:51:43,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-11-10 04:51:43,981 INFO L276 IsEmpty]: Start isEmpty. Operand 5925 states and 6771 transitions. [2018-11-10 04:51:43,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-11-10 04:51:43,983 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:43,983 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:43,984 INFO L424 AbstractCegarLoop]: === Iteration 79 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:43,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:43,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1295117105, now seen corresponding path program 50 times [2018-11-10 04:51:43,984 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:43,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:43,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:43,984 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:43,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 8775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:44,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:44,646 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:44,653 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:51:44,683 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:51:44,683 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:44,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 8775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:44,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:44,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-11-10 04:51:44,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-11-10 04:51:44,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-11-10 04:51:44,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-11-10 04:51:44,762 INFO L87 Difference]: Start difference. First operand 5925 states and 6771 transitions. Second operand 53 states. [2018-11-10 04:51:45,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:45,196 INFO L93 Difference]: Finished difference Result 11708 states and 14197 transitions. [2018-11-10 04:51:45,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-11-10 04:51:45,196 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 359 [2018-11-10 04:51:45,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:45,204 INFO L225 Difference]: With dead ends: 11708 [2018-11-10 04:51:45,204 INFO L226 Difference]: Without dead ends: 11706 [2018-11-10 04:51:45,207 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-11-10 04:51:45,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11706 states. [2018-11-10 04:51:45,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11706 to 6061. [2018-11-10 04:51:45,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6061 states. [2018-11-10 04:51:45,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6061 states to 6061 states and 6927 transitions. [2018-11-10 04:51:45,324 INFO L78 Accepts]: Start accepts. Automaton has 6061 states and 6927 transitions. Word has length 359 [2018-11-10 04:51:45,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:45,325 INFO L481 AbstractCegarLoop]: Abstraction has 6061 states and 6927 transitions. [2018-11-10 04:51:45,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-11-10 04:51:45,325 INFO L276 IsEmpty]: Start isEmpty. Operand 6061 states and 6927 transitions. [2018-11-10 04:51:45,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-11-10 04:51:45,328 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:45,328 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:45,328 INFO L424 AbstractCegarLoop]: === Iteration 80 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:45,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:45,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1279071762, now seen corresponding path program 51 times [2018-11-10 04:51:45,329 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:45,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:45,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:45,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:45,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:46,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 0 proven. 9129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:46,049 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:46,049 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:46,055 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 04:51:46,118 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-11-10 04:51:46,118 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:46,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 0 proven. 9129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:46,198 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:46,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-11-10 04:51:46,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-11-10 04:51:46,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-11-10 04:51:46,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-11-10 04:51:46,199 INFO L87 Difference]: Start difference. First operand 6061 states and 6927 transitions. Second operand 54 states. [2018-11-10 04:51:46,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:46,522 INFO L93 Difference]: Finished difference Result 11981 states and 14529 transitions. [2018-11-10 04:51:46,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-10 04:51:46,522 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 366 [2018-11-10 04:51:46,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:46,529 INFO L225 Difference]: With dead ends: 11981 [2018-11-10 04:51:46,530 INFO L226 Difference]: Without dead ends: 11979 [2018-11-10 04:51:46,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-11-10 04:51:46,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11979 states. [2018-11-10 04:51:46,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11979 to 6197. [2018-11-10 04:51:46,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6197 states. [2018-11-10 04:51:46,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6197 states to 6197 states and 7083 transitions. [2018-11-10 04:51:46,645 INFO L78 Accepts]: Start accepts. Automaton has 6197 states and 7083 transitions. Word has length 366 [2018-11-10 04:51:46,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:46,645 INFO L481 AbstractCegarLoop]: Abstraction has 6197 states and 7083 transitions. [2018-11-10 04:51:46,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-11-10 04:51:46,645 INFO L276 IsEmpty]: Start isEmpty. Operand 6197 states and 7083 transitions. [2018-11-10 04:51:46,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-11-10 04:51:46,648 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:46,648 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:46,648 INFO L424 AbstractCegarLoop]: === Iteration 81 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:46,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:46,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1726538735, now seen corresponding path program 52 times [2018-11-10 04:51:46,649 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:46,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:46,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:46,649 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:46,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:47,389 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 0 proven. 9490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:51:47,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:47,390 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:47,397 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:51:47,427 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:51:47,427 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:47,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:48,886 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 9489 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 04:51:48,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:51:48,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [54] imperfect sequences [54] total 107 [2018-11-10 04:51:48,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-11-10 04:51:48,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-11-10 04:51:48,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2915, Invalid=8427, Unknown=0, NotChecked=0, Total=11342 [2018-11-10 04:51:48,903 INFO L87 Difference]: Start difference. First operand 6197 states and 7083 transitions. Second operand 107 states. [2018-11-10 04:51:52,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:52,444 INFO L93 Difference]: Finished difference Result 8660 states and 9886 transitions. [2018-11-10 04:51:52,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-11-10 04:51:52,444 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 373 [2018-11-10 04:51:52,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:52,446 INFO L225 Difference]: With dead ends: 8660 [2018-11-10 04:51:52,446 INFO L226 Difference]: Without dead ends: 2709 [2018-11-10 04:51:52,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16015 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=16944, Invalid=50916, Unknown=0, NotChecked=0, Total=67860 [2018-11-10 04:51:52,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2709 states. [2018-11-10 04:51:52,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 495. [2018-11-10 04:51:52,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2018-11-10 04:51:52,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 511 transitions. [2018-11-10 04:51:52,461 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 511 transitions. Word has length 373 [2018-11-10 04:51:52,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:52,461 INFO L481 AbstractCegarLoop]: Abstraction has 495 states and 511 transitions. [2018-11-10 04:51:52,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-11-10 04:51:52,461 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 511 transitions. [2018-11-10 04:51:52,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-11-10 04:51:52,462 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:52,462 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 35, 35, 35, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:52,462 INFO L424 AbstractCegarLoop]: === Iteration 82 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:52,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:52,462 INFO L82 PathProgramCache]: Analyzing trace with hash -802504079, now seen corresponding path program 25 times [2018-11-10 04:51:52,462 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:52,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:52,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:52,463 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:52,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 8634 backedges. 3239 proven. 4270 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2018-11-10 04:51:52,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:52,846 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:52,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:52,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8634 backedges. 3239 proven. 4270 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2018-11-10 04:51:52,966 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:52,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-11-10 04:51:52,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-11-10 04:51:52,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-11-10 04:51:52,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-11-10 04:51:52,967 INFO L87 Difference]: Start difference. First operand 495 states and 511 transitions. Second operand 38 states. [2018-11-10 04:51:53,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:53,051 INFO L93 Difference]: Finished difference Result 625 states and 641 transitions. [2018-11-10 04:51:53,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-10 04:51:53,051 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 382 [2018-11-10 04:51:53,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:53,052 INFO L225 Difference]: With dead ends: 625 [2018-11-10 04:51:53,052 INFO L226 Difference]: Without dead ends: 495 [2018-11-10 04:51:53,052 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-11-10 04:51:53,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-11-10 04:51:53,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2018-11-10 04:51:53,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2018-11-10 04:51:53,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 510 transitions. [2018-11-10 04:51:53,059 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 510 transitions. Word has length 382 [2018-11-10 04:51:53,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:53,059 INFO L481 AbstractCegarLoop]: Abstraction has 495 states and 510 transitions. [2018-11-10 04:51:53,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-11-10 04:51:53,059 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 510 transitions. [2018-11-10 04:51:53,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-11-10 04:51:53,060 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:53,060 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 36, 36, 36, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:53,060 INFO L424 AbstractCegarLoop]: === Iteration 83 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:53,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:53,060 INFO L82 PathProgramCache]: Analyzing trace with hash -859399566, now seen corresponding path program 26 times [2018-11-10 04:51:53,061 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:53,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:53,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:53,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:53,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:53,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8973 backedges. 3330 proven. 4518 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2018-11-10 04:51:53,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:53,466 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:53,474 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:51:53,507 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:51:53,507 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:53,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:53,568 INFO L134 CoverageAnalysis]: Checked inductivity of 8973 backedges. 3330 proven. 4518 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2018-11-10 04:51:53,593 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:53,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-11-10 04:51:53,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-11-10 04:51:53,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-11-10 04:51:53,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-11-10 04:51:53,595 INFO L87 Difference]: Start difference. First operand 495 states and 510 transitions. Second operand 39 states. [2018-11-10 04:51:53,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:53,691 INFO L93 Difference]: Finished difference Result 625 states and 640 transitions. [2018-11-10 04:51:53,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-10 04:51:53,691 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 389 [2018-11-10 04:51:53,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:53,692 INFO L225 Difference]: With dead ends: 625 [2018-11-10 04:51:53,692 INFO L226 Difference]: Without dead ends: 495 [2018-11-10 04:51:53,692 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-11-10 04:51:53,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-11-10 04:51:53,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2018-11-10 04:51:53,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2018-11-10 04:51:53,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 509 transitions. [2018-11-10 04:51:53,699 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 509 transitions. Word has length 389 [2018-11-10 04:51:53,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:53,700 INFO L481 AbstractCegarLoop]: Abstraction has 495 states and 509 transitions. [2018-11-10 04:51:53,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-11-10 04:51:53,700 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 509 transitions. [2018-11-10 04:51:53,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-11-10 04:51:53,701 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:53,701 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 37, 37, 37, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:53,701 INFO L424 AbstractCegarLoop]: === Iteration 84 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:53,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:53,702 INFO L82 PathProgramCache]: Analyzing trace with hash -511119535, now seen corresponding path program 27 times [2018-11-10 04:51:53,702 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:53,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:53,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:53,702 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:53,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:54,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9319 backedges. 3421 proven. 4773 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2018-11-10 04:51:54,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:54,171 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:54,178 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 04:51:54,209 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2018-11-10 04:51:54,209 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:54,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:54,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9319 backedges. 3735 proven. 1314 refuted. 0 times theorem prover too weak. 4270 trivial. 0 not checked. [2018-11-10 04:51:54,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:54,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 22] total 61 [2018-11-10 04:51:54,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-11-10 04:51:54,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-11-10 04:51:54,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-11-10 04:51:54,726 INFO L87 Difference]: Start difference. First operand 495 states and 509 transitions. Second operand 61 states. [2018-11-10 04:51:54,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:54,904 INFO L93 Difference]: Finished difference Result 640 states and 656 transitions. [2018-11-10 04:51:54,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-11-10 04:51:54,904 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 396 [2018-11-10 04:51:54,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:54,905 INFO L225 Difference]: With dead ends: 640 [2018-11-10 04:51:54,905 INFO L226 Difference]: Without dead ends: 510 [2018-11-10 04:51:54,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-11-10 04:51:54,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2018-11-10 04:51:54,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 509. [2018-11-10 04:51:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2018-11-10 04:51:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 521 transitions. [2018-11-10 04:51:54,917 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 521 transitions. Word has length 396 [2018-11-10 04:51:54,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:54,917 INFO L481 AbstractCegarLoop]: Abstraction has 509 states and 521 transitions. [2018-11-10 04:51:54,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-11-10 04:51:54,917 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 521 transitions. [2018-11-10 04:51:54,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-11-10 04:51:54,919 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:54,919 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 39, 39, 39, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:54,919 INFO L424 AbstractCegarLoop]: === Iteration 85 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:54,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:54,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1604888145, now seen corresponding path program 28 times [2018-11-10 04:51:54,919 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:54,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:54,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:54,920 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:54,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10693 backedges. 3999 proven. 5304 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2018-11-10 04:51:55,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:55,390 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:55,398 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:51:55,434 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:51:55,434 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:55,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 10693 backedges. 3999 proven. 5304 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2018-11-10 04:51:55,521 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:55,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-11-10 04:51:55,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-11-10 04:51:55,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-11-10 04:51:55,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-11-10 04:51:55,522 INFO L87 Difference]: Start difference. First operand 509 states and 521 transitions. Second operand 42 states. [2018-11-10 04:51:55,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:55,607 INFO L93 Difference]: Finished difference Result 653 states and 665 transitions. [2018-11-10 04:51:55,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-10 04:51:55,608 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 424 [2018-11-10 04:51:55,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:55,608 INFO L225 Difference]: With dead ends: 653 [2018-11-10 04:51:55,608 INFO L226 Difference]: Without dead ends: 509 [2018-11-10 04:51:55,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-11-10 04:51:55,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2018-11-10 04:51:55,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2018-11-10 04:51:55,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2018-11-10 04:51:55,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 520 transitions. [2018-11-10 04:51:55,617 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 520 transitions. Word has length 424 [2018-11-10 04:51:55,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:55,617 INFO L481 AbstractCegarLoop]: Abstraction has 509 states and 520 transitions. [2018-11-10 04:51:55,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-11-10 04:51:55,617 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 520 transitions. [2018-11-10 04:51:55,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-11-10 04:51:55,618 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:55,618 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 40, 40, 40, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:55,619 INFO L424 AbstractCegarLoop]: === Iteration 86 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:55,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:55,619 INFO L82 PathProgramCache]: Analyzing trace with hash -2059932398, now seen corresponding path program 29 times [2018-11-10 04:51:55,619 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:55,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:55,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:55,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:55,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 11070 backedges. 4100 proven. 5580 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2018-11-10 04:51:56,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:56,109 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:56,115 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 04:51:56,180 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-11-10 04:51:56,180 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:56,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:56,253 INFO L134 CoverageAnalysis]: Checked inductivity of 11070 backedges. 4100 proven. 5580 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2018-11-10 04:51:56,269 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:56,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-11-10 04:51:56,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-11-10 04:51:56,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-11-10 04:51:56,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-11-10 04:51:56,271 INFO L87 Difference]: Start difference. First operand 509 states and 520 transitions. Second operand 43 states. [2018-11-10 04:51:56,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:56,352 INFO L93 Difference]: Finished difference Result 653 states and 664 transitions. [2018-11-10 04:51:56,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-11-10 04:51:56,353 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 431 [2018-11-10 04:51:56,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:56,353 INFO L225 Difference]: With dead ends: 653 [2018-11-10 04:51:56,353 INFO L226 Difference]: Without dead ends: 509 [2018-11-10 04:51:56,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-11-10 04:51:56,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2018-11-10 04:51:56,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2018-11-10 04:51:56,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2018-11-10 04:51:56,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 519 transitions. [2018-11-10 04:51:56,364 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 519 transitions. Word has length 431 [2018-11-10 04:51:56,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:56,364 INFO L481 AbstractCegarLoop]: Abstraction has 509 states and 519 transitions. [2018-11-10 04:51:56,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-11-10 04:51:56,364 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 519 transitions. [2018-11-10 04:51:56,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-11-10 04:51:56,366 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:56,366 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 41, 41, 41, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:56,366 INFO L424 AbstractCegarLoop]: === Iteration 87 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:56,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:56,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1278166223, now seen corresponding path program 30 times [2018-11-10 04:51:56,367 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:56,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:56,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:56,367 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:56,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 11454 backedges. 4201 proven. 5863 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2018-11-10 04:51:56,864 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:56,864 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:56,872 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 04:51:56,935 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-11-10 04:51:56,935 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:56,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:57,503 INFO L134 CoverageAnalysis]: Checked inductivity of 11454 backedges. 4383 proven. 1491 refuted. 0 times theorem prover too weak. 5580 trivial. 0 not checked. [2018-11-10 04:51:57,519 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:57,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 23] total 66 [2018-11-10 04:51:57,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-11-10 04:51:57,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-11-10 04:51:57,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-11-10 04:51:57,521 INFO L87 Difference]: Start difference. First operand 509 states and 519 transitions. Second operand 66 states. [2018-11-10 04:51:57,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:57,753 INFO L93 Difference]: Finished difference Result 661 states and 672 transitions. [2018-11-10 04:51:57,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-11-10 04:51:57,753 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 438 [2018-11-10 04:51:57,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:57,753 INFO L225 Difference]: With dead ends: 661 [2018-11-10 04:51:57,753 INFO L226 Difference]: Without dead ends: 517 [2018-11-10 04:51:57,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-11-10 04:51:57,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2018-11-10 04:51:57,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 516. [2018-11-10 04:51:57,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2018-11-10 04:51:57,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 524 transitions. [2018-11-10 04:51:57,762 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 524 transitions. Word has length 438 [2018-11-10 04:51:57,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:57,762 INFO L481 AbstractCegarLoop]: Abstraction has 516 states and 524 transitions. [2018-11-10 04:51:57,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-11-10 04:51:57,762 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 524 transitions. [2018-11-10 04:51:57,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2018-11-10 04:51:57,763 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:57,764 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 43, 43, 43, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:57,764 INFO L424 AbstractCegarLoop]: === Iteration 88 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:57,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:57,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1335864216, now seen corresponding path program 31 times [2018-11-10 04:51:57,764 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:57,764 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:57,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:57,764 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:57,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12604 backedges. 4621 proven. 6450 refuted. 0 times theorem prover too weak. 1533 trivial. 0 not checked. [2018-11-10 04:51:58,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:58,323 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:58,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:58,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12604 backedges. 4621 proven. 6450 refuted. 0 times theorem prover too weak. 1533 trivial. 0 not checked. [2018-11-10 04:51:58,465 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:58,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-11-10 04:51:58,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-11-10 04:51:58,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-11-10 04:51:58,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-11-10 04:51:58,466 INFO L87 Difference]: Start difference. First operand 516 states and 524 transitions. Second operand 46 states. [2018-11-10 04:51:58,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:58,568 INFO L93 Difference]: Finished difference Result 667 states and 675 transitions. [2018-11-10 04:51:58,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-10 04:51:58,568 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 459 [2018-11-10 04:51:58,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:58,569 INFO L225 Difference]: With dead ends: 667 [2018-11-10 04:51:58,569 INFO L226 Difference]: Without dead ends: 516 [2018-11-10 04:51:58,569 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-11-10 04:51:58,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2018-11-10 04:51:58,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2018-11-10 04:51:58,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2018-11-10 04:51:58,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 523 transitions. [2018-11-10 04:51:58,577 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 523 transitions. Word has length 459 [2018-11-10 04:51:58,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:58,578 INFO L481 AbstractCegarLoop]: Abstraction has 516 states and 523 transitions. [2018-11-10 04:51:58,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-11-10 04:51:58,578 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 523 transitions. [2018-11-10 04:51:58,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-11-10 04:51:58,579 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:58,579 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 44, 44, 44, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:58,579 INFO L424 AbstractCegarLoop]: === Iteration 89 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:58,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:58,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1959011639, now seen corresponding path program 32 times [2018-11-10 04:51:58,579 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:58,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:58,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:58,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:51:58,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:51:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 13014 backedges. 4727 proven. 6754 refuted. 0 times theorem prover too weak. 1533 trivial. 0 not checked. [2018-11-10 04:51:59,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:51:59,146 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:51:59,153 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:51:59,192 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:51:59,192 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:51:59,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:51:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 13014 backedges. 4727 proven. 6754 refuted. 0 times theorem prover too weak. 1533 trivial. 0 not checked. [2018-11-10 04:51:59,301 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:51:59,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-11-10 04:51:59,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-11-10 04:51:59,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-11-10 04:51:59,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-11-10 04:51:59,302 INFO L87 Difference]: Start difference. First operand 516 states and 523 transitions. Second operand 47 states. [2018-11-10 04:51:59,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:51:59,406 INFO L93 Difference]: Finished difference Result 667 states and 674 transitions. [2018-11-10 04:51:59,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-11-10 04:51:59,407 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 466 [2018-11-10 04:51:59,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:51:59,407 INFO L225 Difference]: With dead ends: 667 [2018-11-10 04:51:59,407 INFO L226 Difference]: Without dead ends: 516 [2018-11-10 04:51:59,408 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-11-10 04:51:59,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2018-11-10 04:51:59,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2018-11-10 04:51:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2018-11-10 04:51:59,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 522 transitions. [2018-11-10 04:51:59,418 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 522 transitions. Word has length 466 [2018-11-10 04:51:59,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:51:59,418 INFO L481 AbstractCegarLoop]: Abstraction has 516 states and 522 transitions. [2018-11-10 04:51:59,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-11-10 04:51:59,418 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 522 transitions. [2018-11-10 04:51:59,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2018-11-10 04:51:59,420 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:51:59,420 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 45, 45, 45, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-11-10 04:51:59,421 INFO L424 AbstractCegarLoop]: === Iteration 90 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:51:59,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:51:59,421 INFO L82 PathProgramCache]: Analyzing trace with hash -231707976, now seen corresponding path program 33 times [2018-11-10 04:51:59,421 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:51:59,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:51:59,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:59,422 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:51:59,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:51:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:52:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 13431 backedges. 4833 proven. 7065 refuted. 0 times theorem prover too weak. 1533 trivial. 0 not checked. [2018-11-10 04:52:00,015 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:52:00,015 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:52:00,023 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 04:52:00,064 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2018-11-10 04:52:00,064 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:52:00,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:52:00,739 INFO L134 CoverageAnalysis]: Checked inductivity of 13431 backedges. 5229 proven. 1752 refuted. 0 times theorem prover too weak. 6450 trivial. 0 not checked. [2018-11-10 04:52:00,755 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:52:00,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 25] total 72 [2018-11-10 04:52:00,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-11-10 04:52:00,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-11-10 04:52:00,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-11-10 04:52:00,757 INFO L87 Difference]: Start difference. First operand 516 states and 522 transitions. Second operand 72 states. [2018-11-10 04:52:01,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:52:01,006 INFO L93 Difference]: Finished difference Result 682 states and 690 transitions. [2018-11-10 04:52:01,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-11-10 04:52:01,006 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 473 [2018-11-10 04:52:01,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:52:01,007 INFO L225 Difference]: With dead ends: 682 [2018-11-10 04:52:01,007 INFO L226 Difference]: Without dead ends: 531 [2018-11-10 04:52:01,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-11-10 04:52:01,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-11-10 04:52:01,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 530. [2018-11-10 04:52:01,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-11-10 04:52:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 534 transitions. [2018-11-10 04:52:01,019 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 534 transitions. Word has length 473 [2018-11-10 04:52:01,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:52:01,020 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 534 transitions. [2018-11-10 04:52:01,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-11-10 04:52:01,020 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 534 transitions. [2018-11-10 04:52:01,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2018-11-10 04:52:01,022 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:52:01,022 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 70, 70, 47, 47, 47, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-11-10 04:52:01,022 INFO L424 AbstractCegarLoop]: === Iteration 91 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:52:01,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:52:01,022 INFO L82 PathProgramCache]: Analyzing trace with hash -371108936, now seen corresponding path program 34 times [2018-11-10 04:52:01,022 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:52:01,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:52:01,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:52:01,023 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:52:01,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:52:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:52:01,697 INFO L134 CoverageAnalysis]: Checked inductivity of 15069 backedges. 5521 proven. 7708 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2018-11-10 04:52:01,697 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:52:01,698 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:52:01,705 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:52:01,746 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:52:01,746 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:52:01,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:52:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 15069 backedges. 5521 proven. 7708 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2018-11-10 04:52:01,867 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:52:01,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-11-10 04:52:01,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-11-10 04:52:01,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-11-10 04:52:01,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-11-10 04:52:01,868 INFO L87 Difference]: Start difference. First operand 530 states and 534 transitions. Second operand 50 states. [2018-11-10 04:52:01,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:52:01,982 INFO L93 Difference]: Finished difference Result 695 states and 699 transitions. [2018-11-10 04:52:01,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-11-10 04:52:01,983 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 501 [2018-11-10 04:52:01,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:52:01,984 INFO L225 Difference]: With dead ends: 695 [2018-11-10 04:52:01,984 INFO L226 Difference]: Without dead ends: 530 [2018-11-10 04:52:01,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-11-10 04:52:01,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2018-11-10 04:52:01,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2018-11-10 04:52:01,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-11-10 04:52:01,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 533 transitions. [2018-11-10 04:52:01,995 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 533 transitions. Word has length 501 [2018-11-10 04:52:01,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:52:01,995 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 533 transitions. [2018-11-10 04:52:01,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-11-10 04:52:01,996 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 533 transitions. [2018-11-10 04:52:01,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2018-11-10 04:52:01,997 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:52:01,997 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 48, 48, 48, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-11-10 04:52:01,998 INFO L424 AbstractCegarLoop]: === Iteration 92 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:52:01,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:52:01,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1291692393, now seen corresponding path program 35 times [2018-11-10 04:52:01,998 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:52:01,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:52:01,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:52:01,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:52:01,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:52:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:52:02,659 INFO L134 CoverageAnalysis]: Checked inductivity of 15517 backedges. 6957 proven. 6556 refuted. 0 times theorem prover too weak. 2004 trivial. 0 not checked. [2018-11-10 04:52:02,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:52:02,659 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:52:02,667 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 04:52:02,790 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 51 check-sat command(s) [2018-11-10 04:52:02,790 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:52:02,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:52:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 15517 backedges. 5637 proven. 8040 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2018-11-10 04:52:03,488 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:52:03,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 51] total 99 [2018-11-10 04:52:03,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-11-10 04:52:03,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-11-10 04:52:03,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-11-10 04:52:03,490 INFO L87 Difference]: Start difference. First operand 530 states and 533 transitions. Second operand 99 states. [2018-11-10 04:52:03,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:52:03,927 INFO L93 Difference]: Finished difference Result 864 states and 891 transitions. [2018-11-10 04:52:03,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-11-10 04:52:03,927 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 508 [2018-11-10 04:52:03,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:52:03,928 INFO L225 Difference]: With dead ends: 864 [2018-11-10 04:52:03,929 INFO L226 Difference]: Without dead ends: 699 [2018-11-10 04:52:03,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4606 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-11-10 04:52:03,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2018-11-10 04:52:03,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 698. [2018-11-10 04:52:03,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2018-11-10 04:52:03,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 699 transitions. [2018-11-10 04:52:03,949 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 699 transitions. Word has length 508 [2018-11-10 04:52:03,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:52:03,949 INFO L481 AbstractCegarLoop]: Abstraction has 698 states and 699 transitions. [2018-11-10 04:52:03,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-11-10 04:52:03,949 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 699 transitions. [2018-11-10 04:52:03,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2018-11-10 04:52:03,952 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:52:03,952 INFO L375 BasicCegarLoop]: trace histogram [98, 98, 97, 97, 50, 50, 50, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-11-10 04:52:03,953 INFO L424 AbstractCegarLoop]: === Iteration 93 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:52:03,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:52:03,953 INFO L82 PathProgramCache]: Analyzing trace with hash 2027882231, now seen corresponding path program 36 times [2018-11-10 04:52:03,953 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:52:03,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:52:03,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:52:03,954 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:52:03,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:52:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:52:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 28374 backedges. 11941 proven. 8725 refuted. 0 times theorem prover too weak. 7708 trivial. 0 not checked. [2018-11-10 04:52:04,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:52:04,752 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:52:04,759 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 04:52:04,878 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 53 check-sat command(s) [2018-11-10 04:52:04,878 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:52:04,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:52:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 28374 backedges. 11941 proven. 8725 refuted. 0 times theorem prover too weak. 7708 trivial. 0 not checked. [2018-11-10 04:52:05,072 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:52:05,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-11-10 04:52:05,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-11-10 04:52:05,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-11-10 04:52:05,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-11-10 04:52:05,073 INFO L87 Difference]: Start difference. First operand 698 states and 699 transitions. Second operand 53 states. [2018-11-10 04:52:05,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:52:05,213 INFO L93 Difference]: Finished difference Result 1031 states and 1032 transitions. [2018-11-10 04:52:05,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-11-10 04:52:05,214 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 690 [2018-11-10 04:52:05,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:52:05,214 INFO L225 Difference]: With dead ends: 1031 [2018-11-10 04:52:05,214 INFO L226 Difference]: Without dead ends: 698 [2018-11-10 04:52:05,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 691 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-11-10 04:52:05,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2018-11-10 04:52:05,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2018-11-10 04:52:05,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2018-11-10 04:52:05,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 698 transitions. [2018-11-10 04:52:05,233 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 698 transitions. Word has length 690 [2018-11-10 04:52:05,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:52:05,233 INFO L481 AbstractCegarLoop]: Abstraction has 698 states and 698 transitions. [2018-11-10 04:52:05,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-11-10 04:52:05,234 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 698 transitions. [2018-11-10 04:52:05,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2018-11-10 04:52:05,236 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:52:05,236 INFO L375 BasicCegarLoop]: trace histogram [99, 99, 98, 98, 51, 51, 51, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-11-10 04:52:05,236 INFO L424 AbstractCegarLoop]: === Iteration 94 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:52:05,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:52:05,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1162309752, now seen corresponding path program 37 times [2018-11-10 04:52:05,236 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:52:05,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:52:05,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:52:05,237 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:52:05,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:52:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:52:06,067 INFO L134 CoverageAnalysis]: Checked inductivity of 28963 backedges. 12561 proven. 8694 refuted. 0 times theorem prover too weak. 7708 trivial. 0 not checked. [2018-11-10 04:52:06,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:52:06,067 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:52:06,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:52:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:52:06,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:52:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 28963 backedges. 294 proven. 28669 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:52:07,895 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:52:07,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 100] total 100 [2018-11-10 04:52:07,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-11-10 04:52:07,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-11-10 04:52:07,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-11-10 04:52:07,897 INFO L87 Difference]: Start difference. First operand 698 states and 698 transitions. Second operand 101 states. [2018-11-10 04:52:08,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:52:08,204 INFO L93 Difference]: Finished difference Result 1057 states and 1107 transitions. [2018-11-10 04:52:08,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-11-10 04:52:08,204 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 697 [2018-11-10 04:52:08,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:52:08,205 INFO L225 Difference]: With dead ends: 1057 [2018-11-10 04:52:08,205 INFO L226 Difference]: Without dead ends: 1056 [2018-11-10 04:52:08,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 650 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-11-10 04:52:08,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2018-11-10 04:52:08,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1055. [2018-11-10 04:52:08,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2018-11-10 04:52:08,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1055 transitions. [2018-11-10 04:52:08,240 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1055 transitions. Word has length 697 [2018-11-10 04:52:08,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:52:08,240 INFO L481 AbstractCegarLoop]: Abstraction has 1055 states and 1055 transitions. [2018-11-10 04:52:08,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-11-10 04:52:08,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1055 transitions. [2018-11-10 04:52:08,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1055 [2018-11-10 04:52:08,244 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:52:08,244 INFO L375 BasicCegarLoop]: trace histogram [150, 150, 149, 149, 99, 99, 99, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-11-10 04:52:08,244 INFO L424 AbstractCegarLoop]: === Iteration 95 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 04:52:08,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:52:08,245 INFO L82 PathProgramCache]: Analyzing trace with hash 187694705, now seen corresponding path program 38 times [2018-11-10 04:52:08,245 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:52:08,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:52:08,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:52:08,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:52:08,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:52:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:52:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 67978 backedges. 52372 proven. 15353 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-11-10 04:52:10,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:52:10,064 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/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 [2018-11-10 04:52:10,072 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:52:10,166 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:52:10,166 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:52:10,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:52:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 67978 backedges. 44943 proven. 15353 refuted. 0 times theorem prover too weak. 7682 trivial. 0 not checked. [2018-11-10 04:52:10,595 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:52:10,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 55] total 101 [2018-11-10 04:52:10,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-11-10 04:52:10,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-11-10 04:52:10,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-11-10 04:52:10,596 INFO L87 Difference]: Start difference. First operand 1055 states and 1055 transitions. Second operand 101 states. [2018-11-10 04:52:11,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:52:11,073 INFO L93 Difference]: Finished difference Result 1055 states and 1055 transitions. [2018-11-10 04:52:11,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-11-10 04:52:11,073 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 1054 [2018-11-10 04:52:11,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:52:11,073 INFO L225 Difference]: With dead ends: 1055 [2018-11-10 04:52:11,073 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 04:52:11,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1205 GetRequests, 1106 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4794 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-11-10 04:52:11,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 04:52:11,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 04:52:11,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 04:52:11,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 04:52:11,076 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1054 [2018-11-10 04:52:11,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:52:11,076 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 04:52:11,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-11-10 04:52:11,076 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 04:52:11,076 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 04:52:11,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 04:52:11,546 WARN L179 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 765 DAG size of output: 467 [2018-11-10 04:52:13,887 WARN L179 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 456 DAG size of output: 400 [2018-11-10 04:52:13,892 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 04:52:13,892 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 04:52:13,892 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 04:52:13,893 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 04:52:13,893 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 04:52:13,893 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 04:52:13,893 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 14 27) no Hoare annotation was computed. [2018-11-10 04:52:13,893 INFO L425 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2018-11-10 04:52:13,893 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-10 04:52:13,893 INFO L425 ceAbstractionStarter]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2018-11-10 04:52:13,893 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 14 27) no Hoare annotation was computed. [2018-11-10 04:52:13,893 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-10 04:52:13,893 INFO L425 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-10 04:52:13,893 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 14 27) the Hoare annotation is: true [2018-11-10 04:52:13,893 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-10 04:52:13,893 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-10 04:52:13,894 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-10 04:52:13,894 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-10 04:52:13,894 INFO L425 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-10 04:52:13,894 INFO L425 ceAbstractionStarter]: For program point L18-1(lines 18 25) no Hoare annotation was computed. [2018-11-10 04:52:13,894 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-10 04:52:13,896 INFO L421 ceAbstractionStarter]: At program point L18-3(lines 18 25) the Hoare annotation is: (let ((.cse20 (<= main_~y~0 33)) (.cse13 (<= 51 main_~x~0))) (let ((.cse12 (<= main_~y~0 38)) (.cse1 (<= main_~y~0 26)) (.cse16 (<= main_~y~0 43)) (.cse9 (<= main_~y~0 47)) (.cse5 (<= main_~y~0 34)) (.cse25 (<= main_~y~0 1)) (.cse14 (<= main_~y~0 18)) (.cse11 (<= main_~y~0 2)) (.cse19 (<= main_~y~0 25)) (.cse23 (<= main_~y~0 39)) (.cse28 (<= main_~y~0 35)) (.cse7 (<= main_~y~0 17)) (.cse39 (<= main_~y~0 41)) (.cse24 (<= main_~y~0 28)) (.cse37 (<= main_~y~0 14)) (.cse41 (<= main_~y~0 22)) (.cse15 (<= main_~y~0 46)) (.cse45 (<= main_~y~0 37)) (.cse21 (<= main_~y~0 19)) (.cse35 (<= main_~y~0 32)) (.cse34 (<= main_~y~0 36)) (.cse32 (<= main_~y~0 45)) (.cse30 (<= main_~y~0 27)) (.cse48 (<= main_~y~0 23)) (.cse33 (<= main_~y~0 6)) (.cse26 (<= main_~y~0 24)) (.cse4 (<= main_~y~0 10)) (.cse27 (<= main_~y~0 31)) (.cse31 (<= main_~y~0 20)) (.cse47 (<= main_~y~0 3)) (.cse29 (<= main_~y~0 15)) (.cse38 (<= main_~y~0 11)) (.cse3 (<= main_~y~0 7)) (.cse49 (<= main_~y~0 50)) (.cse50 (<= main_~y~0 42)) (.cse6 (<= main_~x~0 50)) (.cse2 (<= main_~y~0 12)) (.cse22 (<= main_~y~0 29)) (.cse8 (<= main_~y~0 30)) (.cse43 (<= main_~y~0 21)) (.cse46 (<= main_~y~0 8)) (.cse44 (<= main_~y~0 13)) (.cse40 (<= main_~y~0 49)) (.cse36 (<= main_~y~0 0)) (.cse17 (<= main_~y~0 48)) (.cse42 (<= main_~y~0 40)) (.cse10 (<= main_~x~0 51)) (.cse18 (<= main_~y~0 9)) (.cse53 (<= main_~y~0 44)) (.cse54 (<= main_~y~0 4)) (.cse52 (<= main_~y~0 5)) (.cse51 (<= main_~y~0 16)) (.cse0 (and .cse20 .cse13))) (or (and .cse0 (<= main_~x~0 76) .cse1) (and .cse0 .cse2 (<= main_~x~0 90)) (and (<= main_~x~0 95) .cse3 .cse0) (and .cse4 (<= main_~x~0 92) .cse0) (and (<= 34 main_~x~0) .cse5 .cse6) (and .cse7 (<= main_~x~0 85) .cse0) (and .cse0 (<= main_~x~0 72) .cse8) (and .cse9 (<= 47 main_~x~0) .cse10) (and (<= main_~x~0 100) .cse0 .cse11) (and (<= main_~x~0 38) .cse12 (<= 38 main_~x~0)) (and (<= main_~x~0 64) .cse13 .cse12) (and .cse6 .cse14 (<= 18 main_~x~0)) (and (<= 46 main_~x~0) .cse6 .cse15) (and .cse6 .cse1 (<= 26 main_~x~0)) (and .cse13 .cse16 (<= main_~x~0 59)) (and .cse13 (<= main_~x~0 54) .cse17) (and (<= 9 main_~x~0) .cse10 .cse18) (and (<= 43 main_~x~0) .cse16 (<= main_~x~0 43)) (and (<= 25 main_~x~0) .cse19 (<= main_~x~0 25)) (and .cse20 .cse10 (<= 33 main_~x~0)) (and .cse0 (<= main_~x~0 83) .cse21) (and .cse22 (<= main_~x~0 29) (<= 29 main_~x~0)) (and .cse9 (<= main_~x~0 55) .cse13) (and (<= main_~x~0 63) .cse13 .cse23) (and .cse24 (<= 28 main_~x~0) .cse10) (and .cse5 .cse13 (<= main_~x~0 68)) (and .cse0 .cse25 (<= main_~x~0 101)) (and (<= main_~x~0 78) .cse26 .cse0) (and .cse0 (<= main_~x~0 71) .cse27) (and .cse28 .cse13 (<= main_~x~0 67)) (and (<= main_~x~0 87) .cse29 .cse0) (and .cse0 (<= main_~x~0 75) .cse30) (and (<= 20 main_~x~0) .cse31 (<= main_~x~0 20)) (and .cse10 (<= 1 main_~x~0) .cse25) (and .cse32 (<= main_~x~0 57) .cse13) (and .cse33 (<= main_~x~0 6) (<= 6 main_~x~0)) (and .cse34 (<= main_~x~0 36) (<= 36 main_~x~0)) (and .cse0 .cse14 (<= main_~x~0 84)) (and (<= 2 main_~x~0) .cse11 (<= main_~x~0 2)) (and .cse0 (<= main_~x~0 77) .cse19) (and .cse0 (<= main_~x~0 69)) (and (<= 39 main_~x~0) .cse10 .cse23) (and (<= main_~x~0 32) (<= 32 main_~x~0) .cse35) (and (<= main_~x~0 0) (<= 0 main_~x~0) .cse36) (and (<= main_~x~0 88) .cse37 .cse0) (and .cse38 (<= 11 main_~x~0) (<= main_~x~0 11)) (and .cse39 .cse13 (<= main_~x~0 61)) (and (<= 35 main_~x~0) .cse28 (<= main_~x~0 35)) (and (<= 49 main_~x~0) (<= main_~x~0 49) .cse40) (and (<= main_~x~0 80) .cse0 .cse41) (and .cse42 (<= main_~x~0 62) .cse13) (and .cse7 (<= 17 main_~x~0) .cse10) (and .cse43 (<= main_~x~0 81) .cse0) (and .cse39 (<= 41 main_~x~0) (<= main_~x~0 41)) (and .cse24 .cse0 (<= main_~x~0 74)) (and .cse6 .cse37 (<= 14 main_~x~0)) (and (<= main_~x~0 22) .cse41 (<= 22 main_~x~0)) (and .cse44 (<= 13 main_~x~0) .cse10) (and (<= main_~x~0 56) .cse13 .cse15) (and (<= 37 main_~x~0) .cse10 .cse45) (and .cse45 .cse13 (<= main_~x~0 65)) (and .cse21 (<= main_~x~0 19) (<= 19 main_~x~0)) (and (<= main_~x~0 70) .cse0 .cse35) (and .cse34 .cse13 (<= main_~x~0 66)) (and (<= (+ main_~y~0 1) 0) .cse0 (<= main_~x~0 103)) (and .cse0 (<= main_~x~0 94) .cse46) (and (<= 45 main_~x~0) .cse32 (<= main_~x~0 45)) (and (<= main_~x~0 27) .cse30 (<= 27 main_~x~0)) (and .cse10 .cse47 (<= 3 main_~x~0)) (and .cse48 .cse10 (<= 23 main_~x~0)) (and (<= main_~x~0 79) .cse48 .cse0) (and (<= main_~x~0 96) .cse33 .cse0) (and .cse26 .cse10 (<= 24 main_~x~0)) (and .cse4 .cse6 (<= 10 main_~x~0)) (and (<= 31 main_~x~0) (<= main_~x~0 31) .cse27) (and .cse31 .cse0 (<= main_~x~0 82)) (and (<= main_~x~0 99) .cse47 .cse0) (and .cse49 .cse13 (<= main_~x~0 52)) (and (<= 15 main_~x~0) .cse29 (<= main_~x~0 15)) (and .cse50 .cse13 (<= main_~x~0 60)) (and (<= 16 main_~x~0) .cse51 .cse10) (and .cse38 (<= main_~x~0 91) .cse0) (and .cse3 (<= main_~x~0 7) (<= 7 main_~x~0)) (and .cse49 (<= 50 main_~x~0) .cse6) (and .cse50 .cse6 (<= 42 main_~x~0)) (and (<= 12 main_~x~0) .cse10 .cse2) (and .cse22 (<= main_~x~0 73) .cse0) (and .cse52 .cse0 (<= main_~x~0 97)) (and (<= 30 main_~x~0) (<= main_~x~0 30) .cse8) (and .cse43 (<= 21 main_~x~0) (<= main_~x~0 21)) (and (<= 8 main_~x~0) (<= main_~x~0 8) .cse46) (and .cse44 .cse0 (<= main_~x~0 89)) (and .cse10 .cse13 (<= main_~y~0 51)) (and (<= main_~x~0 53) .cse13 .cse40) (and .cse0 (<= main_~x~0 102) .cse36) (and (<= 48 main_~x~0) (<= main_~x~0 48) .cse17) (and .cse42 .cse10 (<= 40 main_~x~0)) (and (<= 44 main_~x~0) (<= main_~x~0 44) .cse53) (and .cse18 .cse0 (<= main_~x~0 93)) (and (<= main_~x~0 58) .cse13 .cse53) (and .cse54 .cse0 (<= main_~x~0 98)) (and .cse54 (<= 4 main_~x~0) (<= main_~x~0 4)) (and (<= 5 main_~x~0) .cse52 (<= main_~x~0 5)) (and .cse51 (<= main_~x~0 86) .cse0)))) [2018-11-10 04:52:13,896 INFO L425 ceAbstractionStarter]: For program point L18-4(lines 18 25) no Hoare annotation was computed. [2018-11-10 04:52:13,896 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-10 04:52:13,896 INFO L425 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-10 04:52:13,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 04:52:13 BoogieIcfgContainer [2018-11-10 04:52:13,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 04:52:13,924 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 04:52:13,924 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 04:52:13,924 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 04:52:13,924 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:51:03" (3/4) ... [2018-11-10 04:52:13,928 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 04:52:13,934 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 04:52:13,934 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 04:52:13,937 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-10 04:52:13,938 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-10 04:52:13,938 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 04:52:13,966 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d214a58f-82a6-47c7-b9d0-d1b0d1ec981d/bin-2019/uautomizer/witness.graphml [2018-11-10 04:52:13,967 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 04:52:13,967 INFO L168 Benchmark]: Toolchain (without parser) took 70381.79 ms. Allocated memory was 1.0 GB in the beginning and 2.6 GB in the end (delta: 1.6 GB). Free memory was 954.8 MB in the beginning and 1.6 GB in the end (delta: -645.2 MB). Peak memory consumption was 935.6 MB. Max. memory is 11.5 GB. [2018-11-10 04:52:13,968 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:52:13,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 143.70 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 944.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-10 04:52:13,968 INFO L168 Benchmark]: Boogie Preprocessor took 17.18 ms. Allocated memory is still 1.0 GB. Free memory is still 944.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:52:13,968 INFO L168 Benchmark]: RCFGBuilder took 204.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 944.0 MB in the beginning and 1.1 GB in the end (delta: -203.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-11-10 04:52:13,969 INFO L168 Benchmark]: TraceAbstraction took 69969.73 ms. Allocated memory was 1.2 GB in the beginning and 2.6 GB in the end (delta: 1.4 GB). Free memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: -487.2 MB). Peak memory consumption was 932.0 MB. Max. memory is 11.5 GB. [2018-11-10 04:52:13,969 INFO L168 Benchmark]: Witness Printer took 43.01 ms. Allocated memory is still 2.6 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 34.6 MB). Peak memory consumption was 34.6 MB. Max. memory is 11.5 GB. [2018-11-10 04:52:13,970 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 143.70 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 944.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.18 ms. Allocated memory is still 1.0 GB. Free memory is still 944.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 204.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 944.0 MB in the beginning and 1.1 GB in the end (delta: -203.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 69969.73 ms. Allocated memory was 1.2 GB in the beginning and 2.6 GB in the end (delta: 1.4 GB). Free memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: -487.2 MB). Peak memory consumption was 932.0 MB. Max. memory is 11.5 GB. * Witness Printer took 43.01 ms. Allocated memory is still 2.6 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 34.6 MB). Peak memory consumption was 34.6 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: 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 - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((y <= 33 && 51 <= x) && x <= 76) && y <= 26) || (((y <= 33 && 51 <= x) && y <= 12) && x <= 90)) || ((x <= 95 && y <= 7) && y <= 33 && 51 <= x)) || ((y <= 10 && x <= 92) && y <= 33 && 51 <= x)) || ((34 <= x && y <= 34) && x <= 50)) || ((y <= 17 && x <= 85) && y <= 33 && 51 <= x)) || (((y <= 33 && 51 <= x) && x <= 72) && y <= 30)) || ((y <= 47 && 47 <= x) && x <= 51)) || ((x <= 100 && y <= 33 && 51 <= x) && y <= 2)) || ((x <= 38 && y <= 38) && 38 <= x)) || ((x <= 64 && 51 <= x) && y <= 38)) || ((x <= 50 && y <= 18) && 18 <= x)) || ((46 <= x && x <= 50) && y <= 46)) || ((x <= 50 && y <= 26) && 26 <= x)) || ((51 <= x && y <= 43) && x <= 59)) || ((51 <= x && x <= 54) && y <= 48)) || ((9 <= x && x <= 51) && y <= 9)) || ((43 <= x && y <= 43) && x <= 43)) || ((25 <= x && y <= 25) && x <= 25)) || ((y <= 33 && x <= 51) && 33 <= x)) || (((y <= 33 && 51 <= x) && x <= 83) && y <= 19)) || ((y <= 29 && x <= 29) && 29 <= x)) || ((y <= 47 && x <= 55) && 51 <= x)) || ((x <= 63 && 51 <= x) && y <= 39)) || ((y <= 28 && 28 <= x) && x <= 51)) || ((y <= 34 && 51 <= x) && x <= 68)) || (((y <= 33 && 51 <= x) && y <= 1) && x <= 101)) || ((x <= 78 && y <= 24) && y <= 33 && 51 <= x)) || (((y <= 33 && 51 <= x) && x <= 71) && y <= 31)) || ((y <= 35 && 51 <= x) && x <= 67)) || ((x <= 87 && y <= 15) && y <= 33 && 51 <= x)) || (((y <= 33 && 51 <= x) && x <= 75) && y <= 27)) || ((20 <= x && y <= 20) && x <= 20)) || ((x <= 51 && 1 <= x) && y <= 1)) || ((y <= 45 && x <= 57) && 51 <= x)) || ((y <= 6 && x <= 6) && 6 <= x)) || ((y <= 36 && x <= 36) && 36 <= x)) || (((y <= 33 && 51 <= x) && y <= 18) && x <= 84)) || ((2 <= x && y <= 2) && x <= 2)) || (((y <= 33 && 51 <= x) && x <= 77) && y <= 25)) || ((y <= 33 && 51 <= x) && x <= 69)) || ((39 <= x && x <= 51) && y <= 39)) || ((x <= 32 && 32 <= x) && y <= 32)) || ((x <= 0 && 0 <= x) && y <= 0)) || ((x <= 88 && y <= 14) && y <= 33 && 51 <= x)) || ((y <= 11 && 11 <= x) && x <= 11)) || ((y <= 41 && 51 <= x) && x <= 61)) || ((35 <= x && y <= 35) && x <= 35)) || ((49 <= x && x <= 49) && y <= 49)) || ((x <= 80 && y <= 33 && 51 <= x) && y <= 22)) || ((y <= 40 && x <= 62) && 51 <= x)) || ((y <= 17 && 17 <= x) && x <= 51)) || ((y <= 21 && x <= 81) && y <= 33 && 51 <= x)) || ((y <= 41 && 41 <= x) && x <= 41)) || ((y <= 28 && y <= 33 && 51 <= x) && x <= 74)) || ((x <= 50 && y <= 14) && 14 <= x)) || ((x <= 22 && y <= 22) && 22 <= x)) || ((y <= 13 && 13 <= x) && x <= 51)) || ((x <= 56 && 51 <= x) && y <= 46)) || ((37 <= x && x <= 51) && y <= 37)) || ((y <= 37 && 51 <= x) && x <= 65)) || ((y <= 19 && x <= 19) && 19 <= x)) || ((x <= 70 && y <= 33 && 51 <= x) && y <= 32)) || ((y <= 36 && 51 <= x) && x <= 66)) || ((y + 1 <= 0 && y <= 33 && 51 <= x) && x <= 103)) || (((y <= 33 && 51 <= x) && x <= 94) && y <= 8)) || ((45 <= x && y <= 45) && x <= 45)) || ((x <= 27 && y <= 27) && 27 <= x)) || ((x <= 51 && y <= 3) && 3 <= x)) || ((y <= 23 && x <= 51) && 23 <= x)) || ((x <= 79 && y <= 23) && y <= 33 && 51 <= x)) || ((x <= 96 && y <= 6) && y <= 33 && 51 <= x)) || ((y <= 24 && x <= 51) && 24 <= x)) || ((y <= 10 && x <= 50) && 10 <= x)) || ((31 <= x && x <= 31) && y <= 31)) || ((y <= 20 && y <= 33 && 51 <= x) && x <= 82)) || ((x <= 99 && y <= 3) && y <= 33 && 51 <= x)) || ((y <= 50 && 51 <= x) && x <= 52)) || ((15 <= x && y <= 15) && x <= 15)) || ((y <= 42 && 51 <= x) && x <= 60)) || ((16 <= x && y <= 16) && x <= 51)) || ((y <= 11 && x <= 91) && y <= 33 && 51 <= x)) || ((y <= 7 && x <= 7) && 7 <= x)) || ((y <= 50 && 50 <= x) && x <= 50)) || ((y <= 42 && x <= 50) && 42 <= x)) || ((12 <= x && x <= 51) && y <= 12)) || ((y <= 29 && x <= 73) && y <= 33 && 51 <= x)) || ((y <= 5 && y <= 33 && 51 <= x) && x <= 97)) || ((30 <= x && x <= 30) && y <= 30)) || ((y <= 21 && 21 <= x) && x <= 21)) || ((8 <= x && x <= 8) && y <= 8)) || ((y <= 13 && y <= 33 && 51 <= x) && x <= 89)) || ((x <= 51 && 51 <= x) && y <= 51)) || ((x <= 53 && 51 <= x) && y <= 49)) || (((y <= 33 && 51 <= x) && x <= 102) && y <= 0)) || ((48 <= x && x <= 48) && y <= 48)) || ((y <= 40 && x <= 51) && 40 <= x)) || ((44 <= x && x <= 44) && y <= 44)) || ((y <= 9 && y <= 33 && 51 <= x) && x <= 93)) || ((x <= 58 && 51 <= x) && y <= 44)) || ((y <= 4 && y <= 33 && 51 <= x) && x <= 98)) || ((y <= 4 && 4 <= x) && x <= 4)) || ((5 <= x && y <= 5) && x <= 5)) || ((y <= 16 && x <= 86) && y <= 33 && 51 <= x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 6 error locations. SAFE Result, 69.8s OverallTime, 95 OverallIterations, 150 TraceHistogramMax, 17.8s AutomataDifference, 0.0s DeadEndRemovalTime, 2.8s HoareAnnotationTime, HoareTripleCheckerStatistics: 2807 SDtfs, 14480 SDslu, 23478 SDs, 0 SdLazy, 27993 SolverSat, 2931 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24956 GetRequests, 21932 SyntacticMatches, 0 SemanticMatches, 3024 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25485 ImplicationChecksByTransitivity, 32.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6197occurred in iteration=80, 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: 3.0s AutomataMinimizationTime, 95 MinimizatonAttempts, 106559 StatesRemovedByMinimization, 85 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 109 NumberOfFragments, 1184 HoareAnnotationTreeSize, 5 FomulaSimplifications, 3666 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 5 FomulaSimplificationsInter, 12092 FormulaSimplificationTreeSizeReductionInter, 2.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 36.3s InterpolantComputationTime, 44378 NumberOfCodeBlocks, 43762 NumberOfCodeBlocksAsserted, 1322 NumberOfCheckSat, 44193 ConstructedInterpolants, 0 QuantifiedInterpolants, 40788027 SizeOfPredicates, 25 NumberOfNonLiveVariables, 34233 ConjunctsInSsa, 2566 ConjunctsInUnsatCore, 185 InterpolantComputations, 6 PerfectInterpolantSequences, 392787/984972 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...