./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 cf39454d83b4ec00341bd0b620b0fa6b2321ce21 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 06:14:26,813 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 06:14:26,814 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 06:14:26,821 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 06:14:26,821 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 06:14:26,822 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 06:14:26,823 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 06:14:26,824 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 06:14:26,825 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 06:14:26,825 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 06:14:26,826 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 06:14:26,826 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 06:14:26,827 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 06:14:26,827 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 06:14:26,828 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 06:14:26,829 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 06:14:26,830 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 06:14:26,831 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 06:14:26,832 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 06:14:26,833 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 06:14:26,834 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 06:14:26,835 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 06:14:26,836 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 06:14:26,837 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 06:14:26,837 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 06:14:26,838 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 06:14:26,839 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 06:14:26,839 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 06:14:26,840 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 06:14:26,841 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 06:14:26,841 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 06:14:26,842 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 06:14:26,842 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 06:14:26,842 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 06:14:26,843 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 06:14:26,844 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 06:14:26,844 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-23 06:14:26,854 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 06:14:26,854 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 06:14:26,855 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 06:14:26,855 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 06:14:26,855 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 06:14:26,855 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 06:14:26,856 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 06:14:26,856 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 06:14:26,856 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 06:14:26,856 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 06:14:26,856 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 06:14:26,856 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 06:14:26,856 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 06:14:26,856 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 06:14:26,857 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-23 06:14:26,857 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 06:14:26,857 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 06:14:26,857 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 06:14:26,858 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 06:14:26,858 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 06:14:26,859 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 06:14:26,859 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 06:14:26,859 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 06:14:26,859 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 06:14:26,859 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 06:14:26,859 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 06:14:26,859 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 06:14:26,859 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 06:14:26,859 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 06:14:26,859 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_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 -> cf39454d83b4ec00341bd0b620b0fa6b2321ce21 [2018-11-23 06:14:26,897 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 06:14:26,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 06:14:26,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 06:14:26,908 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 06:14:26,908 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 06:14:26,909 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 06:14:26,942 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/bin-2019/uautomizer/data/49c895036/f2b2ddd015d74635aaf37dcc661da2e2/FLAGcd1719cab [2018-11-23 06:14:27,266 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 06:14:27,267 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 06:14:27,270 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/bin-2019/uautomizer/data/49c895036/f2b2ddd015d74635aaf37dcc661da2e2/FLAGcd1719cab [2018-11-23 06:14:27,706 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/bin-2019/uautomizer/data/49c895036/f2b2ddd015d74635aaf37dcc661da2e2 [2018-11-23 06:14:27,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 06:14:27,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 06:14:27,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 06:14:27,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 06:14:27,713 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 06:14:27,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:14:27" (1/1) ... [2018-11-23 06:14:27,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b5c9f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:27, skipping insertion in model container [2018-11-23 06:14:27,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:14:27" (1/1) ... [2018-11-23 06:14:27,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 06:14:27,737 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 06:14:27,855 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 06:14:27,858 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 06:14:27,871 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 06:14:27,885 INFO L195 MainTranslator]: Completed translation [2018-11-23 06:14:27,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:27 WrapperNode [2018-11-23 06:14:27,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 06:14:27,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 06:14:27,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 06:14:27,886 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 06:14:27,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:27" (1/1) ... [2018-11-23 06:14:27,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:27" (1/1) ... [2018-11-23 06:14:27,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 06:14:27,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 06:14:27,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 06:14:27,901 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 06:14:27,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:27" (1/1) ... [2018-11-23 06:14:27,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:27" (1/1) ... [2018-11-23 06:14:27,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:27" (1/1) ... [2018-11-23 06:14:27,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:27" (1/1) ... [2018-11-23 06:14:27,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:27" (1/1) ... [2018-11-23 06:14:27,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:27" (1/1) ... [2018-11-23 06:14:27,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:27" (1/1) ... [2018-11-23 06:14:27,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 06:14:27,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 06:14:27,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 06:14:27,916 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 06:14:27,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 06:14:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 06:14:27,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 06:14:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 06:14:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 06:14:27,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 06:14:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 06:14:27,988 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 06:14:27,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 06:14:27,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 06:14:28,108 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 06:14:28,109 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-23 06:14:28,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:14:28 BoogieIcfgContainer [2018-11-23 06:14:28,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 06:14:28,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 06:14:28,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 06:14:28,112 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 06:14:28,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:14:27" (1/3) ... [2018-11-23 06:14:28,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f6f065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:14:28, skipping insertion in model container [2018-11-23 06:14:28,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:27" (2/3) ... [2018-11-23 06:14:28,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f6f065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:14:28, skipping insertion in model container [2018-11-23 06:14:28,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:14:28" (3/3) ... [2018-11-23 06:14:28,115 INFO L112 eAbstractionObserver]: Analyzing ICFG Arrays01-EquivalentConstantIndices_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 06:14:28,123 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 06:14:28,130 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-23 06:14:28,143 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-23 06:14:28,166 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 06:14:28,167 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 06:14:28,167 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 06:14:28,167 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 06:14:28,167 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 06:14:28,167 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 06:14:28,167 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 06:14:28,168 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 06:14:28,168 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 06:14:28,182 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-11-23 06:14:28,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-23 06:14:28,187 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:28,187 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:28,189 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:28,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:28,194 INFO L82 PathProgramCache]: Analyzing trace with hash 842098899, now seen corresponding path program 1 times [2018-11-23 06:14:28,196 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:28,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:28,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:28,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:14:28,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:28,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 06:14:28,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 06:14:28,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 06:14:28,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 06:14:28,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 06:14:28,347 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2018-11-23 06:14:28,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:28,409 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-11-23 06:14:28,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 06:14:28,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-11-23 06:14:28,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:28,417 INFO L225 Difference]: With dead ends: 40 [2018-11-23 06:14:28,417 INFO L226 Difference]: Without dead ends: 22 [2018-11-23 06:14:28,419 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 06:14:28,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-23 06:14:28,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-23 06:14:28,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-23 06:14:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-11-23 06:14:28,441 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 9 [2018-11-23 06:14:28,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:28,442 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-11-23 06:14:28,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 06:14:28,442 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-11-23 06:14:28,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 06:14:28,442 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:28,442 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:28,443 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:28,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:28,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1995551887, now seen corresponding path program 1 times [2018-11-23 06:14:28,443 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:28,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:28,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:28,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:14:28,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 06:14:28,490 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 06:14:28,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 06:14:28,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 06:14:28,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 06:14:28,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 06:14:28,492 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 4 states. [2018-11-23 06:14:28,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:28,523 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-11-23 06:14:28,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 06:14:28,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-11-23 06:14:28,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:28,524 INFO L225 Difference]: With dead ends: 22 [2018-11-23 06:14:28,524 INFO L226 Difference]: Without dead ends: 21 [2018-11-23 06:14:28,525 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 06:14:28,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-23 06:14:28,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-23 06:14:28,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-23 06:14:28,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-11-23 06:14:28,528 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 13 [2018-11-23 06:14:28,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:28,528 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-11-23 06:14:28,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 06:14:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-11-23 06:14:28,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-23 06:14:28,529 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:28,529 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:28,529 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:28,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:28,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1732517839, now seen corresponding path program 1 times [2018-11-23 06:14:28,529 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:28,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:28,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:28,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:14:28,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:28,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:28,562 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:28,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:14:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:28,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:28,647 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:14:28,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-11-23 06:14:28,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 06:14:28,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 06:14:28,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-23 06:14:28,648 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 7 states. [2018-11-23 06:14:28,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:28,698 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-11-23 06:14:28,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 06:14:28,699 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-11-23 06:14:28,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:28,699 INFO L225 Difference]: With dead ends: 32 [2018-11-23 06:14:28,700 INFO L226 Difference]: Without dead ends: 26 [2018-11-23 06:14:28,700 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-23 06:14:28,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-23 06:14:28,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2018-11-23 06:14:28,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-23 06:14:28,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-11-23 06:14:28,703 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2018-11-23 06:14:28,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:28,703 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-11-23 06:14:28,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 06:14:28,703 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-11-23 06:14:28,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-23 06:14:28,704 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:28,704 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:28,704 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:28,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:28,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1732566402, now seen corresponding path program 1 times [2018-11-23 06:14:28,705 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:28,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:28,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:28,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:14:28,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:28,746 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:28,746 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:28,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:14:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:28,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:28,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 06:14:28,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2018-11-23 06:14:28,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 06:14:28,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 06:14:28,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-23 06:14:28,863 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 8 states. [2018-11-23 06:14:28,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:28,906 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-11-23 06:14:28,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 06:14:28,907 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-11-23 06:14:28,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:28,907 INFO L225 Difference]: With dead ends: 22 [2018-11-23 06:14:28,907 INFO L226 Difference]: Without dead ends: 21 [2018-11-23 06:14:28,908 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-23 06:14:28,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-23 06:14:28,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-23 06:14:28,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-23 06:14:28,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-11-23 06:14:28,911 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2018-11-23 06:14:28,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:28,911 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-11-23 06:14:28,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 06:14:28,911 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-11-23 06:14:28,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-23 06:14:28,912 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:28,912 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:28,912 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:28,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:28,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1456064915, now seen corresponding path program 2 times [2018-11-23 06:14:28,912 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:28,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:28,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:28,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:14:28,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:28,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:28,962 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:28,962 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:28,969 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 06:14:28,979 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 06:14:28,979 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 06:14:28,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:29,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:29,015 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:14:29,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-11-23 06:14:29,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 06:14:29,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 06:14:29,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-23 06:14:29,016 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2018-11-23 06:14:29,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:29,050 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-11-23 06:14:29,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 06:14:29,050 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-11-23 06:14:29,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:29,051 INFO L225 Difference]: With dead ends: 34 [2018-11-23 06:14:29,051 INFO L226 Difference]: Without dead ends: 28 [2018-11-23 06:14:29,052 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-11-23 06:14:29,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-23 06:14:29,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2018-11-23 06:14:29,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-23 06:14:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-11-23 06:14:29,055 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2018-11-23 06:14:29,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:29,055 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-11-23 06:14:29,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 06:14:29,056 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-11-23 06:14:29,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 06:14:29,056 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:29,056 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:29,057 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:29,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:29,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1411182935, now seen corresponding path program 3 times [2018-11-23 06:14:29,057 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:29,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:29,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:29,058 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:14:29,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:29,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:29,121 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:29,136 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 06:14:29,159 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-23 06:14:29,160 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 06:14:29,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:29,208 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:29,232 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:14:29,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2018-11-23 06:14:29,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 06:14:29,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 06:14:29,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-23 06:14:29,233 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 11 states. [2018-11-23 06:14:29,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:29,275 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-11-23 06:14:29,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 06:14:29,276 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-11-23 06:14:29,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:29,277 INFO L225 Difference]: With dead ends: 38 [2018-11-23 06:14:29,277 INFO L226 Difference]: Without dead ends: 32 [2018-11-23 06:14:29,277 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-11-23 06:14:29,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-23 06:14:29,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2018-11-23 06:14:29,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-23 06:14:29,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-11-23 06:14:29,280 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 22 [2018-11-23 06:14:29,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:29,280 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-11-23 06:14:29,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 06:14:29,280 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-11-23 06:14:29,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-23 06:14:29,281 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:29,281 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:29,281 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:29,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:29,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1605462245, now seen corresponding path program 4 times [2018-11-23 06:14:29,282 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:29,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:29,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:29,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:14:29,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:29,367 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:29,367 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:29,384 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 06:14:29,396 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 06:14:29,396 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 06:14:29,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:29,421 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:29,435 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:14:29,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-11-23 06:14:29,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 06:14:29,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 06:14:29,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-11-23 06:14:29,436 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 13 states. [2018-11-23 06:14:29,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:29,526 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-11-23 06:14:29,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 06:14:29,527 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2018-11-23 06:14:29,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:29,527 INFO L225 Difference]: With dead ends: 42 [2018-11-23 06:14:29,528 INFO L226 Difference]: Without dead ends: 36 [2018-11-23 06:14:29,528 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2018-11-23 06:14:29,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-23 06:14:29,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-11-23 06:14:29,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-23 06:14:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-11-23 06:14:29,532 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2018-11-23 06:14:29,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:29,532 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-11-23 06:14:29,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 06:14:29,533 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-11-23 06:14:29,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-23 06:14:29,533 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:29,533 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:29,534 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:29,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:29,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1947223329, now seen corresponding path program 5 times [2018-11-23 06:14:29,534 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:29,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:29,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:29,535 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:14:29,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:29,636 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:29,636 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:29,637 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:29,648 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 06:14:29,665 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-23 06:14:29,665 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 06:14:29,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:29,697 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:14:29,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-11-23 06:14:29,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 06:14:29,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 06:14:29,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-11-23 06:14:29,698 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 15 states. [2018-11-23 06:14:29,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:29,767 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2018-11-23 06:14:29,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 06:14:29,769 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 30 [2018-11-23 06:14:29,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:29,769 INFO L225 Difference]: With dead ends: 46 [2018-11-23 06:14:29,769 INFO L226 Difference]: Without dead ends: 40 [2018-11-23 06:14:29,770 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2018-11-23 06:14:29,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-23 06:14:29,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-11-23 06:14:29,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-23 06:14:29,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-11-23 06:14:29,773 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 30 [2018-11-23 06:14:29,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:29,773 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-11-23 06:14:29,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 06:14:29,773 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-11-23 06:14:29,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-23 06:14:29,774 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:29,774 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:29,774 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:29,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:29,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1223598941, now seen corresponding path program 6 times [2018-11-23 06:14:29,775 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:29,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:29,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:29,776 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:14:29,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:29,873 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:29,873 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:29,879 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-23 06:14:29,901 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-23 06:14:29,901 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 06:14:29,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:29,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:14:29,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2018-11-23 06:14:29,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-23 06:14:29,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-23 06:14:29,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-11-23 06:14:29,941 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 17 states. [2018-11-23 06:14:30,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:30,015 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-11-23 06:14:30,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 06:14:30,016 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 34 [2018-11-23 06:14:30,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:30,017 INFO L225 Difference]: With dead ends: 50 [2018-11-23 06:14:30,017 INFO L226 Difference]: Without dead ends: 44 [2018-11-23 06:14:30,017 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2018-11-23 06:14:30,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-23 06:14:30,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-11-23 06:14:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-23 06:14:30,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-11-23 06:14:30,020 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 34 [2018-11-23 06:14:30,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:30,020 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-11-23 06:14:30,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-23 06:14:30,020 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-11-23 06:14:30,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-23 06:14:30,021 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:30,021 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:30,021 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:30,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:30,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1363442791, now seen corresponding path program 7 times [2018-11-23 06:14:30,022 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:30,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:30,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:30,022 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:14:30,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:30,153 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:30,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:30,153 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:30,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:14:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:30,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:30,203 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:14:30,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-11-23 06:14:30,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-23 06:14:30,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-23 06:14:30,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-11-23 06:14:30,204 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 19 states. [2018-11-23 06:14:30,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:30,281 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2018-11-23 06:14:30,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-23 06:14:30,281 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 38 [2018-11-23 06:14:30,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:30,282 INFO L225 Difference]: With dead ends: 54 [2018-11-23 06:14:30,282 INFO L226 Difference]: Without dead ends: 48 [2018-11-23 06:14:30,283 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2018-11-23 06:14:30,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-23 06:14:30,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-11-23 06:14:30,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-23 06:14:30,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-11-23 06:14:30,285 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 38 [2018-11-23 06:14:30,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:30,286 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-11-23 06:14:30,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-23 06:14:30,286 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-11-23 06:14:30,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-23 06:14:30,286 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:30,286 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:30,287 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:30,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:30,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1503271467, now seen corresponding path program 8 times [2018-11-23 06:14:30,287 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:30,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:30,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:30,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:14:30,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:30,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:30,399 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:30,404 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 06:14:30,418 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 06:14:30,418 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 06:14:30,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:30,445 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:30,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:14:30,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-11-23 06:14:30,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-23 06:14:30,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-23 06:14:30,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-11-23 06:14:30,462 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 21 states. [2018-11-23 06:14:30,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:30,549 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2018-11-23 06:14:30,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-23 06:14:30,550 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 42 [2018-11-23 06:14:30,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:30,550 INFO L225 Difference]: With dead ends: 58 [2018-11-23 06:14:30,550 INFO L226 Difference]: Without dead ends: 52 [2018-11-23 06:14:30,551 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=246, Invalid=566, Unknown=0, NotChecked=0, Total=812 [2018-11-23 06:14:30,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-23 06:14:30,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2018-11-23 06:14:30,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-23 06:14:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-11-23 06:14:30,554 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 42 [2018-11-23 06:14:30,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:30,555 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-11-23 06:14:30,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-23 06:14:30,555 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-11-23 06:14:30,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-23 06:14:30,555 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:30,556 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:30,556 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:30,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:30,556 INFO L82 PathProgramCache]: Analyzing trace with hash -559729169, now seen corresponding path program 9 times [2018-11-23 06:14:30,556 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:30,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:30,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:30,557 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:14:30,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:30,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:30,712 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:30,718 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 06:14:30,749 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-23 06:14:30,749 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 06:14:30,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:30,772 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:30,787 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:14:30,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2018-11-23 06:14:30,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-23 06:14:30,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-23 06:14:30,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-11-23 06:14:30,789 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 23 states. [2018-11-23 06:14:30,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:30,895 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2018-11-23 06:14:30,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-23 06:14:30,895 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 46 [2018-11-23 06:14:30,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:30,896 INFO L225 Difference]: With dead ends: 62 [2018-11-23 06:14:30,896 INFO L226 Difference]: Without dead ends: 56 [2018-11-23 06:14:30,897 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=298, Invalid=694, Unknown=0, NotChecked=0, Total=992 [2018-11-23 06:14:30,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-23 06:14:30,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2018-11-23 06:14:30,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-23 06:14:30,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2018-11-23 06:14:30,901 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 46 [2018-11-23 06:14:30,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:30,902 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2018-11-23 06:14:30,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-23 06:14:30,902 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2018-11-23 06:14:30,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-23 06:14:30,902 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:30,903 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:30,903 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:30,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:30,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1047580595, now seen corresponding path program 10 times [2018-11-23 06:14:30,903 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:30,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:30,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:30,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:14:30,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:31,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:31,089 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:31,095 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 06:14:31,117 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 06:14:31,117 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 06:14:31,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:31,171 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:31,187 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:14:31,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-11-23 06:14:31,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-23 06:14:31,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-23 06:14:31,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-11-23 06:14:31,188 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 25 states. [2018-11-23 06:14:31,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:31,317 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2018-11-23 06:14:31,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-23 06:14:31,317 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 50 [2018-11-23 06:14:31,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:31,318 INFO L225 Difference]: With dead ends: 66 [2018-11-23 06:14:31,318 INFO L226 Difference]: Without dead ends: 60 [2018-11-23 06:14:31,319 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=355, Invalid=835, Unknown=0, NotChecked=0, Total=1190 [2018-11-23 06:14:31,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-23 06:14:31,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2018-11-23 06:14:31,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-23 06:14:31,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-11-23 06:14:31,323 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 50 [2018-11-23 06:14:31,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:31,323 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-11-23 06:14:31,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-23 06:14:31,323 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-11-23 06:14:31,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-23 06:14:31,324 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:31,324 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:31,324 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:31,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:31,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1720969079, now seen corresponding path program 11 times [2018-11-23 06:14:31,324 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:31,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:31,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:31,325 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:14:31,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:31,551 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:31,551 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:31,558 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 06:14:31,593 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-11-23 06:14:31,593 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 06:14:31,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:31,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:14:31,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2018-11-23 06:14:31,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-23 06:14:31,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-23 06:14:31,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-11-23 06:14:31,635 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 27 states. [2018-11-23 06:14:31,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:31,771 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2018-11-23 06:14:31,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-23 06:14:31,771 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 54 [2018-11-23 06:14:31,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:31,771 INFO L225 Difference]: With dead ends: 70 [2018-11-23 06:14:31,771 INFO L226 Difference]: Without dead ends: 64 [2018-11-23 06:14:31,772 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=417, Invalid=989, Unknown=0, NotChecked=0, Total=1406 [2018-11-23 06:14:31,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-23 06:14:31,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2018-11-23 06:14:31,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-23 06:14:31,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2018-11-23 06:14:31,775 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 54 [2018-11-23 06:14:31,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:31,776 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2018-11-23 06:14:31,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-23 06:14:31,776 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2018-11-23 06:14:31,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-23 06:14:31,776 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:31,776 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:31,776 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:31,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:31,776 INFO L82 PathProgramCache]: Analyzing trace with hash 337476923, now seen corresponding path program 12 times [2018-11-23 06:14:31,776 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:31,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:31,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:31,777 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:14:31,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:32,005 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:32,005 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:32,011 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-23 06:14:32,092 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-11-23 06:14:32,092 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 06:14:32,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:32,151 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:14:32,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2018-11-23 06:14:32,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-11-23 06:14:32,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-11-23 06:14:32,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-11-23 06:14:32,152 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 29 states. [2018-11-23 06:14:32,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:32,295 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2018-11-23 06:14:32,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-23 06:14:32,295 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 58 [2018-11-23 06:14:32,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:32,296 INFO L225 Difference]: With dead ends: 74 [2018-11-23 06:14:32,296 INFO L226 Difference]: Without dead ends: 68 [2018-11-23 06:14:32,296 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=484, Invalid=1156, Unknown=0, NotChecked=0, Total=1640 [2018-11-23 06:14:32,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-23 06:14:32,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2018-11-23 06:14:32,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-23 06:14:32,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2018-11-23 06:14:32,300 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 58 [2018-11-23 06:14:32,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:32,300 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2018-11-23 06:14:32,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-11-23 06:14:32,300 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2018-11-23 06:14:32,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-23 06:14:32,301 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:32,301 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:32,301 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:32,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:32,301 INFO L82 PathProgramCache]: Analyzing trace with hash 329158911, now seen corresponding path program 13 times [2018-11-23 06:14:32,301 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:32,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:32,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:32,302 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:14:32,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:32,516 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:32,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:32,516 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:32,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:14:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:32,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:32,602 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:14:32,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-11-23 06:14:32,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-23 06:14:32,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-23 06:14:32,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-11-23 06:14:32,603 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 31 states. [2018-11-23 06:14:32,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:32,766 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2018-11-23 06:14:32,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-23 06:14:32,767 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 62 [2018-11-23 06:14:32,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:32,767 INFO L225 Difference]: With dead ends: 78 [2018-11-23 06:14:32,767 INFO L226 Difference]: Without dead ends: 72 [2018-11-23 06:14:32,768 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=556, Invalid=1336, Unknown=0, NotChecked=0, Total=1892 [2018-11-23 06:14:32,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-11-23 06:14:32,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2018-11-23 06:14:32,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-23 06:14:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-11-23 06:14:32,770 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 62 [2018-11-23 06:14:32,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:32,770 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-11-23 06:14:32,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-23 06:14:32,770 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-11-23 06:14:32,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-23 06:14:32,771 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:32,771 INFO L402 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:32,771 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:32,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:32,771 INFO L82 PathProgramCache]: Analyzing trace with hash -2128076093, now seen corresponding path program 14 times [2018-11-23 06:14:32,771 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:32,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:32,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:32,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:14:32,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:33,035 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:33,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:33,035 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:33,041 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 06:14:33,057 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 06:14:33,057 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 06:14:33,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:33,087 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:33,101 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:14:33,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-11-23 06:14:33,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-23 06:14:33,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-23 06:14:33,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-11-23 06:14:33,102 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 33 states. [2018-11-23 06:14:33,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:33,281 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2018-11-23 06:14:33,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-23 06:14:33,282 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 66 [2018-11-23 06:14:33,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:33,282 INFO L225 Difference]: With dead ends: 82 [2018-11-23 06:14:33,282 INFO L226 Difference]: Without dead ends: 76 [2018-11-23 06:14:33,283 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=633, Invalid=1529, Unknown=0, NotChecked=0, Total=2162 [2018-11-23 06:14:33,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-11-23 06:14:33,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2018-11-23 06:14:33,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-11-23 06:14:33,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2018-11-23 06:14:33,286 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 66 [2018-11-23 06:14:33,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:33,286 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2018-11-23 06:14:33,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-23 06:14:33,286 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2018-11-23 06:14:33,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-11-23 06:14:33,286 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:33,286 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:33,287 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:33,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:33,287 INFO L82 PathProgramCache]: Analyzing trace with hash 139145863, now seen corresponding path program 15 times [2018-11-23 06:14:33,287 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:33,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:33,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:33,287 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:14:33,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:33,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:33,543 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:33,550 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 06:14:33,667 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-11-23 06:14:33,667 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 06:14:33,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:33,717 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:14:33,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2018-11-23 06:14:33,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-11-23 06:14:33,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-11-23 06:14:33,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2018-11-23 06:14:33,718 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 35 states. [2018-11-23 06:14:33,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:33,891 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2018-11-23 06:14:33,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-23 06:14:33,891 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 70 [2018-11-23 06:14:33,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:33,892 INFO L225 Difference]: With dead ends: 86 [2018-11-23 06:14:33,892 INFO L226 Difference]: Without dead ends: 80 [2018-11-23 06:14:33,893 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=715, Invalid=1735, Unknown=0, NotChecked=0, Total=2450 [2018-11-23 06:14:33,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-11-23 06:14:33,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2018-11-23 06:14:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-11-23 06:14:33,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2018-11-23 06:14:33,895 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 70 [2018-11-23 06:14:33,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:33,896 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2018-11-23 06:14:33,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-11-23 06:14:33,896 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2018-11-23 06:14:33,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-11-23 06:14:33,897 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:33,897 INFO L402 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:33,897 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:33,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:33,897 INFO L82 PathProgramCache]: Analyzing trace with hash 605601867, now seen corresponding path program 16 times [2018-11-23 06:14:33,897 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:33,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:33,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:33,898 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:14:33,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:34,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:34,250 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:34,258 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 06:14:34,274 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 06:14:34,274 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 06:14:34,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:34,313 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:14:34,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-11-23 06:14:34,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-11-23 06:14:34,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-11-23 06:14:34,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-11-23 06:14:34,314 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 37 states. [2018-11-23 06:14:34,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:34,497 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2018-11-23 06:14:34,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-11-23 06:14:34,498 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 74 [2018-11-23 06:14:34,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:34,498 INFO L225 Difference]: With dead ends: 90 [2018-11-23 06:14:34,498 INFO L226 Difference]: Without dead ends: 84 [2018-11-23 06:14:34,499 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=802, Invalid=1954, Unknown=0, NotChecked=0, Total=2756 [2018-11-23 06:14:34,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-11-23 06:14:34,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2018-11-23 06:14:34,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-11-23 06:14:34,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-11-23 06:14:34,503 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 74 [2018-11-23 06:14:34,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:34,503 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-11-23 06:14:34,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-11-23 06:14:34,503 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-11-23 06:14:34,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-11-23 06:14:34,504 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:34,504 INFO L402 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:34,504 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:34,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:34,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1596050447, now seen corresponding path program 17 times [2018-11-23 06:14:34,504 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:34,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:34,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:34,509 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:14:34,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:34,830 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:34,830 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:34,830 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:34,836 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 06:14:34,930 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-11-23 06:14:34,930 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 06:14:34,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:34,988 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:14:34,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2018-11-23 06:14:34,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-11-23 06:14:34,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-11-23 06:14:34,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-11-23 06:14:34,988 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 39 states. [2018-11-23 06:14:35,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:35,193 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2018-11-23 06:14:35,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-23 06:14:35,193 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 78 [2018-11-23 06:14:35,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:35,193 INFO L225 Difference]: With dead ends: 94 [2018-11-23 06:14:35,193 INFO L226 Difference]: Without dead ends: 88 [2018-11-23 06:14:35,194 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=894, Invalid=2186, Unknown=0, NotChecked=0, Total=3080 [2018-11-23 06:14:35,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-11-23 06:14:35,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2018-11-23 06:14:35,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-11-23 06:14:35,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-11-23 06:14:35,197 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 78 [2018-11-23 06:14:35,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:35,197 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-11-23 06:14:35,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-11-23 06:14:35,197 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-11-23 06:14:35,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-11-23 06:14:35,197 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:35,198 INFO L402 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:35,198 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:35,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:35,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1820895789, now seen corresponding path program 18 times [2018-11-23 06:14:35,198 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:35,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:35,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:35,199 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:14:35,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:35,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:14:35,540 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/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 [2018-11-23 06:14:35,546 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-23 06:14:35,978 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2018-11-23 06:14:35,978 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 06:14:35,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:14:36,089 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-11-23 06:14:36,091 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-23 06:14:36,092 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,094 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,098 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,099 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-11-23 06:14:36,199 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-23 06:14:36,202 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 06:14:36,204 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-23 06:14:36,205 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,212 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,218 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,218 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-11-23 06:14:36,279 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-23 06:14:36,282 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 06:14:36,283 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-23 06:14:36,284 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,289 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,295 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,295 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-11-23 06:14:36,356 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-23 06:14:36,359 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 06:14:36,361 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-23 06:14:36,361 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,365 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,369 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,369 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-11-23 06:14:36,423 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-23 06:14:36,425 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 06:14:36,426 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-23 06:14:36,427 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,430 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,435 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,435 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-11-23 06:14:36,500 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-23 06:14:36,503 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 06:14:36,506 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-23 06:14:36,506 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,511 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,516 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,516 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-11-23 06:14:36,573 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-23 06:14:36,575 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 06:14:36,576 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-23 06:14:36,576 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,579 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,583 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,583 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-11-23 06:14:36,634 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-23 06:14:36,635 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 06:14:36,636 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-23 06:14:36,637 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,641 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,645 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,645 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-11-23 06:14:36,707 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-23 06:14:36,711 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 06:14:36,718 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-23 06:14:36,719 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,725 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,732 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,732 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:31, output treesize:13 [2018-11-23 06:14:36,758 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-23 06:14:36,767 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-11-23 06:14:36,768 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-23 06:14:36,776 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 06:14:36,784 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-23 06:14:36,785 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:27 [2018-11-23 06:14:36,878 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-11-23 06:14:36,887 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-11-23 06:14:36,888 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-23 06:14:36,897 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 06:14:36,917 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-11-23 06:14:36,919 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-23 06:14:36,919 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,924 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:36,938 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-23 06:14:36,938 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-11-23 06:14:37,040 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-11-23 06:14:37,042 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-23 06:14:37,042 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 06:14:37,047 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:37,058 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-11-23 06:14:37,065 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-11-23 06:14:37,065 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-23 06:14:37,072 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 06:14:37,084 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-23 06:14:37,084 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-11-23 06:14:37,166 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-11-23 06:14:37,168 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-23 06:14:37,168 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 06:14:37,171 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:37,181 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-11-23 06:14:37,187 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-11-23 06:14:37,187 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-23 06:14:37,194 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 06:14:37,205 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-23 06:14:37,205 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-11-23 06:14:37,284 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-11-23 06:14:37,286 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-23 06:14:37,286 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 06:14:37,290 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:37,301 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-11-23 06:14:37,309 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-11-23 06:14:37,310 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-23 06:14:37,318 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 06:14:37,330 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-23 06:14:37,331 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-11-23 06:14:37,417 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-11-23 06:14:37,419 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-23 06:14:37,419 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 06:14:37,422 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:37,432 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-11-23 06:14:37,440 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-11-23 06:14:37,441 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-23 06:14:37,449 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 06:14:37,460 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-23 06:14:37,460 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-11-23 06:14:37,540 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-23 06:14:37,541 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2018-11-23 06:14:37,541 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 06:14:37,542 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:37,542 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 06:14:37,543 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-11-23 06:14:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 105 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:14:37,593 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:14:37,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 40] total 78 [2018-11-23 06:14:37,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-11-23 06:14:37,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-11-23 06:14:37,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1001, Invalid=5005, Unknown=0, NotChecked=0, Total=6006 [2018-11-23 06:14:37,595 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 78 states. [2018-11-23 06:14:38,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:38,527 INFO L93 Difference]: Finished difference Result 97 states and 100 transitions. [2018-11-23 06:14:38,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-11-23 06:14:38,527 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 82 [2018-11-23 06:14:38,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:38,528 INFO L225 Difference]: With dead ends: 97 [2018-11-23 06:14:38,528 INFO L226 Difference]: Without dead ends: 91 [2018-11-23 06:14:38,530 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4106 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2476, Invalid=10406, Unknown=0, NotChecked=0, Total=12882 [2018-11-23 06:14:38,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-11-23 06:14:38,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2018-11-23 06:14:38,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-11-23 06:14:38,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2018-11-23 06:14:38,533 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 82 [2018-11-23 06:14:38,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:38,533 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2018-11-23 06:14:38,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-11-23 06:14:38,534 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2018-11-23 06:14:38,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-11-23 06:14:38,534 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 06:14:38,534 INFO L402 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 06:14:38,535 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 06:14:38,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:14:38,535 INFO L82 PathProgramCache]: Analyzing trace with hash 715216266, now seen corresponding path program 1 times [2018-11-23 06:14:38,535 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:14:38,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:14:38,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:38,536 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:14:38,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:14:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:14:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2018-11-23 06:14:38,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 06:14:38,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 06:14:38,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 06:14:38,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 06:14:38,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 06:14:38,563 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 4 states. [2018-11-23 06:14:38,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:14:38,574 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2018-11-23 06:14:38,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 06:14:38,576 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2018-11-23 06:14:38,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 06:14:38,576 INFO L225 Difference]: With dead ends: 88 [2018-11-23 06:14:38,576 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 06:14:38,577 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 06:14:38,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 06:14:38,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 06:14:38,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 06:14:38,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 06:14:38,577 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2018-11-23 06:14:38,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 06:14:38,577 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 06:14:38,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 06:14:38,578 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 06:14:38,578 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 06:14:38,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 06:14:38,665 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-23 06:14:38,665 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-23 06:14:38,665 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 06:14:38,665 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 06:14:38,666 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 06:14:38,666 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 06:14:38,666 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 06:14:38,666 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2018-11-23 06:14:38,666 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-11-23 06:14:38,666 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 21) no Hoare annotation was computed. [2018-11-23 06:14:38,666 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2018-11-23 06:14:38,666 INFO L448 ceAbstractionStarter]: For program point L17-2(lines 10 21) no Hoare annotation was computed. [2018-11-23 06:14:38,666 INFO L448 ceAbstractionStarter]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2018-11-23 06:14:38,666 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 21) no Hoare annotation was computed. [2018-11-23 06:14:38,666 INFO L448 ceAbstractionStarter]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2018-11-23 06:14:38,666 INFO L448 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2018-11-23 06:14:38,666 INFO L448 ceAbstractionStarter]: For program point L13-4(line 13) no Hoare annotation was computed. [2018-11-23 06:14:38,667 INFO L444 ceAbstractionStarter]: At program point L13-5(lines 13 15) the Hoare annotation is: (let ((.cse0 (= |main_~#a~0.offset| 0))) (or (and (<= 4 main_~i~0) (<= (select (select |#memory_int| |main_~#a~0.base|) (+ |main_~#a~0.offset| 12)) 2147483647) .cse0) (and (= main_~i~0 0) .cse0) (and (<= main_~i~0 3) (<= 1 main_~i~0) .cse0))) [2018-11-23 06:14:38,667 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 21) the Hoare annotation is: true [2018-11-23 06:14:38,667 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2018-11-23 06:14:38,667 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-23 06:14:38,667 INFO L448 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2018-11-23 06:14:38,667 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-11-23 06:14:38,672 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 06:14:38,676 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 06:14:38,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 06:14:38 BoogieIcfgContainer [2018-11-23 06:14:38,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 06:14:38,678 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 06:14:38,679 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 06:14:38,679 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 06:14:38,679 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:14:28" (3/4) ... [2018-11-23 06:14:38,682 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 06:14:38,687 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 06:14:38,687 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 06:14:38,690 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-23 06:14:38,690 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-23 06:14:38,690 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 06:14:38,715 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_84752957-7b5c-4965-ad6b-f2ccf393d2a3/bin-2019/uautomizer/witness.graphml [2018-11-23 06:14:38,715 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 06:14:38,716 INFO L168 Benchmark]: Toolchain (without parser) took 11007.79 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 412.6 MB). Free memory was 959.3 MB in the beginning and 1.4 GB in the end (delta: -447.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 06:14:38,717 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 06:14:38,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.51 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 06:14:38,717 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.78 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 06:14:38,717 INFO L168 Benchmark]: Boogie Preprocessor took 14.87 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 06:14:38,718 INFO L168 Benchmark]: RCFGBuilder took 193.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -187.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-23 06:14:38,718 INFO L168 Benchmark]: TraceAbstraction took 10568.34 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 260.6 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -273.6 MB). Peak memory consumption was 504.6 MB. Max. memory is 11.5 GB. [2018-11-23 06:14:38,718 INFO L168 Benchmark]: Witness Printer took 37.03 ms. Allocated memory is still 1.4 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 06:14:38,720 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 175.51 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.78 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.87 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 193.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -187.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10568.34 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 260.6 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -273.6 MB). Peak memory consumption was 504.6 MB. Max. memory is 11.5 GB. * Witness Printer took 37.03 ms. Allocated memory is still 1.4 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant [2018-11-23 06:14:38,723 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 06:14:38,724 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((4 <= i && unknown-#memory_int-unknown[a][a + 12] <= 2147483647) && a == 0) || (i == 0 && a == 0)) || ((i <= 3 && 1 <= i) && a == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 4 error locations. SAFE Result, 10.5s OverallTime, 22 OverallIterations, 19 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 285 SDtfs, 895 SDslu, 3400 SDs, 0 SdLazy, 2677 SolverSat, 178 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1464 GetRequests, 820 SyntacticMatches, 5 SemanticMatches, 639 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7632 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 22 MinimizatonAttempts, 55 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 24 NumberOfFragments, 38 HoareAnnotationTreeSize, 5 FomulaSimplifications, 176 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 192 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 1865 NumberOfCodeBlocks, 1861 NumberOfCodeBlocksAsserted, 142 NumberOfCheckSat, 1824 ConstructedInterpolants, 0 QuantifiedInterpolants, 346068 SizeOfPredicates, 194 NumberOfNonLiveVariables, 2528 ConjunctsInSsa, 408 ConjunctsInUnsatCore, 41 InterpolantComputations, 4 PerfectInterpolantSequences, 815/8808 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...