./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1d_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_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1d_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/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 0837a1e1d82be1b28ccf3514392f1b01c88a9160 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 14:31:40,267 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 14:31:40,268 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 14:31:40,276 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 14:31:40,276 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 14:31:40,276 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 14:31:40,277 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 14:31:40,278 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 14:31:40,279 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 14:31:40,280 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 14:31:40,281 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 14:31:40,281 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 14:31:40,281 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 14:31:40,282 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 14:31:40,283 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 14:31:40,283 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 14:31:40,284 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 14:31:40,285 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 14:31:40,287 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 14:31:40,288 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 14:31:40,289 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 14:31:40,289 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 14:31:40,291 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 14:31:40,291 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 14:31:40,291 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 14:31:40,292 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 14:31:40,293 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 14:31:40,293 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 14:31:40,294 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 14:31:40,294 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 14:31:40,295 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 14:31:40,295 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 14:31:40,295 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 14:31:40,295 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 14:31:40,296 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 14:31:40,297 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 14:31:40,297 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-23 14:31:40,306 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 14:31:40,307 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 14:31:40,307 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 14:31:40,307 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 14:31:40,308 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 14:31:40,308 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 14:31:40,308 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 14:31:40,308 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 14:31:40,308 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 14:31:40,309 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 14:31:40,309 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 14:31:40,309 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 14:31:40,309 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 14:31:40,309 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 14:31:40,309 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-23 14:31:40,309 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 14:31:40,309 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 14:31:40,310 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 14:31:40,310 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 14:31:40,310 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 14:31:40,310 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 14:31:40,310 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 14:31:40,310 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 14:31:40,310 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 14:31:40,311 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 14:31:40,311 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 14:31:40,311 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 14:31:40,311 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 14:31:40,311 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 14:31:40,311 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_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/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 -> 0837a1e1d82be1b28ccf3514392f1b01c88a9160 [2018-11-23 14:31:40,333 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 14:31:40,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 14:31:40,344 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 14:31:40,345 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 14:31:40,345 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 14:31:40,346 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/NestedRecursion_1d_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 14:31:40,382 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/bin-2019/uautomizer/data/65f265378/66125ddab9354352aadf6884510fc2d7/FLAG7054b523d [2018-11-23 14:31:40,728 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 14:31:40,728 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/sv-benchmarks/c/termination-crafted/NestedRecursion_1d_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 14:31:40,733 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/bin-2019/uautomizer/data/65f265378/66125ddab9354352aadf6884510fc2d7/FLAG7054b523d [2018-11-23 14:31:41,142 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/bin-2019/uautomizer/data/65f265378/66125ddab9354352aadf6884510fc2d7 [2018-11-23 14:31:41,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 14:31:41,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 14:31:41,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 14:31:41,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 14:31:41,148 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 14:31:41,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:31:41" (1/1) ... [2018-11-23 14:31:41,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@725d32ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:41, skipping insertion in model container [2018-11-23 14:31:41,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:31:41" (1/1) ... [2018-11-23 14:31:41,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 14:31:41,167 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 14:31:41,265 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 14:31:41,267 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 14:31:41,278 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 14:31:41,287 INFO L195 MainTranslator]: Completed translation [2018-11-23 14:31:41,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:41 WrapperNode [2018-11-23 14:31:41,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 14:31:41,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 14:31:41,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 14:31:41,288 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 14:31:41,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:41" (1/1) ... [2018-11-23 14:31:41,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:41" (1/1) ... [2018-11-23 14:31:41,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 14:31:41,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 14:31:41,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 14:31:41,300 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 14:31:41,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:41" (1/1) ... [2018-11-23 14:31:41,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:41" (1/1) ... [2018-11-23 14:31:41,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:41" (1/1) ... [2018-11-23 14:31:41,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:41" (1/1) ... [2018-11-23 14:31:41,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:41" (1/1) ... [2018-11-23 14:31:41,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:41" (1/1) ... [2018-11-23 14:31:41,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:41" (1/1) ... [2018-11-23 14:31:41,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 14:31:41,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 14:31:41,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 14:31:41,311 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 14:31:41,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/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 14:31:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 14:31:41,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 14:31:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2018-11-23 14:31:41,387 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2018-11-23 14:31:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2018-11-23 14:31:41,387 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2018-11-23 14:31:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 14:31:41,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 14:31:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 14:31:41,388 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 14:31:41,515 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 14:31:41,515 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 14:31:41,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:31:41 BoogieIcfgContainer [2018-11-23 14:31:41,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 14:31:41,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 14:31:41,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 14:31:41,519 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 14:31:41,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:31:41" (1/3) ... [2018-11-23 14:31:41,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d095f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:31:41, skipping insertion in model container [2018-11-23 14:31:41,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:41" (2/3) ... [2018-11-23 14:31:41,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d095f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:31:41, skipping insertion in model container [2018-11-23 14:31:41,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:31:41" (3/3) ... [2018-11-23 14:31:41,522 INFO L112 eAbstractionObserver]: Analyzing ICFG NestedRecursion_1d_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 14:31:41,529 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 14:31:41,533 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2018-11-23 14:31:41,542 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2018-11-23 14:31:41,560 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 14:31:41,560 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 14:31:41,560 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 14:31:41,560 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 14:31:41,561 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 14:31:41,561 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 14:31:41,561 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 14:31:41,561 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 14:31:41,561 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 14:31:41,573 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-11-23 14:31:41,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-23 14:31:41,577 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:41,577 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:41,579 INFO L423 AbstractCegarLoop]: === Iteration 1 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:41,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:41,582 INFO L82 PathProgramCache]: Analyzing trace with hash -359085562, now seen corresponding path program 1 times [2018-11-23 14:31:41,583 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:41,584 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:41,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:41,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:41,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:41,723 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 14:31:41,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:31:41,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 14:31:41,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 14:31:41,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 14:31:41,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-23 14:31:41,736 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 7 states. [2018-11-23 14:31:41,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:41,911 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions. [2018-11-23 14:31:41,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 14:31:41,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-11-23 14:31:41,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:41,920 INFO L225 Difference]: With dead ends: 91 [2018-11-23 14:31:41,921 INFO L226 Difference]: Without dead ends: 83 [2018-11-23 14:31:41,923 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-23 14:31:41,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-11-23 14:31:41,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 70. [2018-11-23 14:31:41,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-11-23 14:31:41,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2018-11-23 14:31:41,959 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 12 [2018-11-23 14:31:41,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:41,960 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2018-11-23 14:31:41,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 14:31:41,960 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2018-11-23 14:31:41,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 14:31:41,961 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:41,961 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:41,962 INFO L423 AbstractCegarLoop]: === Iteration 2 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:41,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:41,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1753249505, now seen corresponding path program 1 times [2018-11-23 14:31:41,962 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:41,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:41,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:41,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:41,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:41,988 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 14:31:41,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:31:41,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 14:31:41,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 14:31:41,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 14:31:41,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 14:31:41,990 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand 3 states. [2018-11-23 14:31:42,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:42,001 INFO L93 Difference]: Finished difference Result 74 states and 98 transitions. [2018-11-23 14:31:42,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 14:31:42,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-23 14:31:42,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:42,003 INFO L225 Difference]: With dead ends: 74 [2018-11-23 14:31:42,003 INFO L226 Difference]: Without dead ends: 73 [2018-11-23 14:31:42,004 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 14:31:42,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-11-23 14:31:42,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2018-11-23 14:31:42,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-23 14:31:42,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2018-11-23 14:31:42,014 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 13 [2018-11-23 14:31:42,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:42,015 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2018-11-23 14:31:42,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 14:31:42,015 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2018-11-23 14:31:42,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-23 14:31:42,015 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:42,015 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:42,016 INFO L423 AbstractCegarLoop]: === Iteration 3 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:42,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:42,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1245225281, now seen corresponding path program 1 times [2018-11-23 14:31:42,016 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:42,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:42,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:42,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:42,040 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 14:31:42,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:31:42,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 14:31:42,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 14:31:42,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 14:31:42,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 14:31:42,041 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand 3 states. [2018-11-23 14:31:42,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:42,050 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2018-11-23 14:31:42,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 14:31:42,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-11-23 14:31:42,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:42,052 INFO L225 Difference]: With dead ends: 69 [2018-11-23 14:31:42,052 INFO L226 Difference]: Without dead ends: 68 [2018-11-23 14:31:42,052 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 14:31:42,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-23 14:31:42,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-11-23 14:31:42,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-11-23 14:31:42,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2018-11-23 14:31:42,058 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 15 [2018-11-23 14:31:42,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:42,059 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2018-11-23 14:31:42,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 14:31:42,059 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2018-11-23 14:31:42,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-23 14:31:42,059 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:42,059 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:42,060 INFO L423 AbstractCegarLoop]: === Iteration 4 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:42,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:42,060 INFO L82 PathProgramCache]: Analyzing trace with hash -52721888, now seen corresponding path program 1 times [2018-11-23 14:31:42,060 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:42,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:42,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:42,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:42,080 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 14:31:42,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:31:42,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 14:31:42,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 14:31:42,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 14:31:42,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 14:31:42,081 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand 4 states. [2018-11-23 14:31:42,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:42,104 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2018-11-23 14:31:42,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 14:31:42,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-23 14:31:42,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:42,105 INFO L225 Difference]: With dead ends: 89 [2018-11-23 14:31:42,105 INFO L226 Difference]: Without dead ends: 88 [2018-11-23 14:31:42,106 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 14:31:42,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-11-23 14:31:42,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 78. [2018-11-23 14:31:42,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-11-23 14:31:42,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2018-11-23 14:31:42,113 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 16 [2018-11-23 14:31:42,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:42,113 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2018-11-23 14:31:42,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 14:31:42,113 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2018-11-23 14:31:42,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-23 14:31:42,113 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:42,113 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:42,114 INFO L423 AbstractCegarLoop]: === Iteration 5 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:42,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:42,114 INFO L82 PathProgramCache]: Analyzing trace with hash -571942417, now seen corresponding path program 1 times [2018-11-23 14:31:42,114 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:42,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:42,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:42,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 14:31:42,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:31:42,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 14:31:42,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 14:31:42,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 14:31:42,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 14:31:42,133 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 3 states. [2018-11-23 14:31:42,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:42,142 INFO L93 Difference]: Finished difference Result 78 states and 100 transitions. [2018-11-23 14:31:42,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 14:31:42,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-23 14:31:42,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:42,143 INFO L225 Difference]: With dead ends: 78 [2018-11-23 14:31:42,143 INFO L226 Difference]: Without dead ends: 77 [2018-11-23 14:31:42,144 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 14:31:42,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-23 14:31:42,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-11-23 14:31:42,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-11-23 14:31:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 98 transitions. [2018-11-23 14:31:42,151 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 98 transitions. Word has length 20 [2018-11-23 14:31:42,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:42,151 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 98 transitions. [2018-11-23 14:31:42,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 14:31:42,151 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 98 transitions. [2018-11-23 14:31:42,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-23 14:31:42,151 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:42,151 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:42,152 INFO L423 AbstractCegarLoop]: === Iteration 6 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:42,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:42,152 INFO L82 PathProgramCache]: Analyzing trace with hash -550345698, now seen corresponding path program 1 times [2018-11-23 14:31:42,152 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:42,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:42,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:42,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:42,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 14:31:42,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:31:42,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 14:31:42,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 14:31:42,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 14:31:42,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 14:31:42,176 INFO L87 Difference]: Start difference. First operand 77 states and 98 transitions. Second operand 4 states. [2018-11-23 14:31:42,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:42,201 INFO L93 Difference]: Finished difference Result 98 states and 130 transitions. [2018-11-23 14:31:42,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 14:31:42,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-11-23 14:31:42,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:42,203 INFO L225 Difference]: With dead ends: 98 [2018-11-23 14:31:42,203 INFO L226 Difference]: Without dead ends: 97 [2018-11-23 14:31:42,203 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 14:31:42,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-11-23 14:31:42,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 83. [2018-11-23 14:31:42,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-11-23 14:31:42,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 104 transitions. [2018-11-23 14:31:42,212 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 104 transitions. Word has length 21 [2018-11-23 14:31:42,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:42,212 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 104 transitions. [2018-11-23 14:31:42,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 14:31:42,212 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 104 transitions. [2018-11-23 14:31:42,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 14:31:42,213 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:42,213 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:42,213 INFO L423 AbstractCegarLoop]: === Iteration 7 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:42,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:42,214 INFO L82 PathProgramCache]: Analyzing trace with hash 838473927, now seen corresponding path program 1 times [2018-11-23 14:31:42,214 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:42,214 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:42,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:42,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 14:31:42,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:31:42,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 14:31:42,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 14:31:42,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 14:31:42,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 14:31:42,237 INFO L87 Difference]: Start difference. First operand 83 states and 104 transitions. Second operand 5 states. [2018-11-23 14:31:42,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:42,290 INFO L93 Difference]: Finished difference Result 129 states and 163 transitions. [2018-11-23 14:31:42,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 14:31:42,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-11-23 14:31:42,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:42,291 INFO L225 Difference]: With dead ends: 129 [2018-11-23 14:31:42,291 INFO L226 Difference]: Without dead ends: 79 [2018-11-23 14:31:42,292 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 14:31:42,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-11-23 14:31:42,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2018-11-23 14:31:42,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-11-23 14:31:42,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 96 transitions. [2018-11-23 14:31:42,298 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 96 transitions. Word has length 23 [2018-11-23 14:31:42,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:42,298 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 96 transitions. [2018-11-23 14:31:42,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 14:31:42,298 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 96 transitions. [2018-11-23 14:31:42,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 14:31:42,299 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:42,299 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:42,300 INFO L423 AbstractCegarLoop]: === Iteration 8 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:42,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:42,300 INFO L82 PathProgramCache]: Analyzing trace with hash 2032985165, now seen corresponding path program 1 times [2018-11-23 14:31:42,300 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:42,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:42,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:42,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:42,345 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 14:31:42,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:31:42,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 14:31:42,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 14:31:42,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 14:31:42,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 14:31:42,346 INFO L87 Difference]: Start difference. First operand 77 states and 96 transitions. Second operand 5 states. [2018-11-23 14:31:42,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:42,402 INFO L93 Difference]: Finished difference Result 102 states and 126 transitions. [2018-11-23 14:31:42,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 14:31:42,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-11-23 14:31:42,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:42,403 INFO L225 Difference]: With dead ends: 102 [2018-11-23 14:31:42,403 INFO L226 Difference]: Without dead ends: 101 [2018-11-23 14:31:42,404 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-23 14:31:42,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-11-23 14:31:42,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2018-11-23 14:31:42,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-11-23 14:31:42,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 125 transitions. [2018-11-23 14:31:42,410 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 125 transitions. Word has length 25 [2018-11-23 14:31:42,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:42,410 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 125 transitions. [2018-11-23 14:31:42,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 14:31:42,410 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 125 transitions. [2018-11-23 14:31:42,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-23 14:31:42,411 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:42,411 INFO L402 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:42,411 INFO L423 AbstractCegarLoop]: === Iteration 9 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:42,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:42,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1980125912, now seen corresponding path program 1 times [2018-11-23 14:31:42,412 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:42,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:42,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:42,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-23 14:31:42,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:31:42,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 14:31:42,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 14:31:42,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 14:31:42,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 14:31:42,435 INFO L87 Difference]: Start difference. First operand 98 states and 125 transitions. Second operand 5 states. [2018-11-23 14:31:42,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:42,507 INFO L93 Difference]: Finished difference Result 123 states and 155 transitions. [2018-11-23 14:31:42,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 14:31:42,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-11-23 14:31:42,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:42,509 INFO L225 Difference]: With dead ends: 123 [2018-11-23 14:31:42,509 INFO L226 Difference]: Without dead ends: 122 [2018-11-23 14:31:42,510 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-23 14:31:42,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-11-23 14:31:42,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2018-11-23 14:31:42,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-11-23 14:31:42,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 154 transitions. [2018-11-23 14:31:42,519 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 154 transitions. Word has length 31 [2018-11-23 14:31:42,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:42,519 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 154 transitions. [2018-11-23 14:31:42,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 14:31:42,519 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 154 transitions. [2018-11-23 14:31:42,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-23 14:31:42,520 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:42,520 INFO L402 BasicCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:42,521 INFO L423 AbstractCegarLoop]: === Iteration 10 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:42,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:42,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1460081577, now seen corresponding path program 1 times [2018-11-23 14:31:42,521 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:42,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:42,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:42,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-23 14:31:42,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:31:42,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 14:31:42,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 14:31:42,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 14:31:42,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 14:31:42,546 INFO L87 Difference]: Start difference. First operand 119 states and 154 transitions. Second operand 4 states. [2018-11-23 14:31:42,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:42,569 INFO L93 Difference]: Finished difference Result 132 states and 174 transitions. [2018-11-23 14:31:42,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 14:31:42,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-11-23 14:31:42,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:42,572 INFO L225 Difference]: With dead ends: 132 [2018-11-23 14:31:42,572 INFO L226 Difference]: Without dead ends: 131 [2018-11-23 14:31:42,572 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 14:31:42,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-11-23 14:31:42,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2018-11-23 14:31:42,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-11-23 14:31:42,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 162 transitions. [2018-11-23 14:31:42,581 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 162 transitions. Word has length 39 [2018-11-23 14:31:42,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:42,581 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 162 transitions. [2018-11-23 14:31:42,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 14:31:42,582 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 162 transitions. [2018-11-23 14:31:42,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-23 14:31:42,582 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:42,583 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:42,583 INFO L423 AbstractCegarLoop]: === Iteration 11 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:42,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:42,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1827729912, now seen corresponding path program 1 times [2018-11-23 14:31:42,583 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:42,584 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:42,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:42,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-23 14:31:42,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:31:42,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 14:31:42,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 14:31:42,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 14:31:42,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 14:31:42,608 INFO L87 Difference]: Start difference. First operand 127 states and 162 transitions. Second operand 3 states. [2018-11-23 14:31:42,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:42,629 INFO L93 Difference]: Finished difference Result 127 states and 162 transitions. [2018-11-23 14:31:42,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 14:31:42,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2018-11-23 14:31:42,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:42,631 INFO L225 Difference]: With dead ends: 127 [2018-11-23 14:31:42,631 INFO L226 Difference]: Without dead ends: 126 [2018-11-23 14:31:42,632 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 14:31:42,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-11-23 14:31:42,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-11-23 14:31:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-11-23 14:31:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 158 transitions. [2018-11-23 14:31:42,640 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 158 transitions. Word has length 35 [2018-11-23 14:31:42,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:42,642 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 158 transitions. [2018-11-23 14:31:42,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 14:31:42,642 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 158 transitions. [2018-11-23 14:31:42,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-23 14:31:42,643 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:42,643 INFO L402 BasicCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:42,644 INFO L423 AbstractCegarLoop]: === Iteration 12 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:42,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:42,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1886555928, now seen corresponding path program 1 times [2018-11-23 14:31:42,644 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:42,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:42,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:42,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-23 14:31:42,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:31:42,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 14:31:42,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 14:31:42,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 14:31:42,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 14:31:42,702 INFO L87 Difference]: Start difference. First operand 126 states and 158 transitions. Second operand 5 states. [2018-11-23 14:31:42,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:42,764 INFO L93 Difference]: Finished difference Result 126 states and 158 transitions. [2018-11-23 14:31:42,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 14:31:42,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2018-11-23 14:31:42,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:42,766 INFO L225 Difference]: With dead ends: 126 [2018-11-23 14:31:42,767 INFO L226 Difference]: Without dead ends: 125 [2018-11-23 14:31:42,767 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 14:31:42,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-11-23 14:31:42,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 111. [2018-11-23 14:31:42,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-11-23 14:31:42,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 136 transitions. [2018-11-23 14:31:42,776 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 136 transitions. Word has length 50 [2018-11-23 14:31:42,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:42,777 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 136 transitions. [2018-11-23 14:31:42,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 14:31:42,777 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 136 transitions. [2018-11-23 14:31:42,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-23 14:31:42,778 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:42,778 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:42,778 INFO L423 AbstractCegarLoop]: === Iteration 13 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:42,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:42,779 INFO L82 PathProgramCache]: Analyzing trace with hash 324073318, now seen corresponding path program 1 times [2018-11-23 14:31:42,779 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:42,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:42,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:42,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:42,819 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-23 14:31:42,819 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:31:42,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 14:31:42,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 14:31:42,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 14:31:42,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 14:31:42,820 INFO L87 Difference]: Start difference. First operand 111 states and 136 transitions. Second operand 5 states. [2018-11-23 14:31:42,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:42,848 INFO L93 Difference]: Finished difference Result 111 states and 136 transitions. [2018-11-23 14:31:42,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 14:31:42,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2018-11-23 14:31:42,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:42,850 INFO L225 Difference]: With dead ends: 111 [2018-11-23 14:31:42,851 INFO L226 Difference]: Without dead ends: 110 [2018-11-23 14:31:42,851 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 14:31:42,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-11-23 14:31:42,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-11-23 14:31:42,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-11-23 14:31:42,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 134 transitions. [2018-11-23 14:31:42,861 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 134 transitions. Word has length 40 [2018-11-23 14:31:42,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:42,862 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 134 transitions. [2018-11-23 14:31:42,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 14:31:42,863 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 134 transitions. [2018-11-23 14:31:42,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-23 14:31:42,866 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:42,867 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:42,867 INFO L423 AbstractCegarLoop]: === Iteration 14 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:42,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:42,867 INFO L82 PathProgramCache]: Analyzing trace with hash -921113151, now seen corresponding path program 1 times [2018-11-23 14:31:42,868 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:42,868 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:42,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:42,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:42,940 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-23 14:31:42,940 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 14:31:42,940 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/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 14:31:42,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:42,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:31:42,986 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-23 14:31:43,003 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 14:31:43,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-23 14:31:43,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 14:31:43,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 14:31:43,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-11-23 14:31:43,004 INFO L87 Difference]: Start difference. First operand 110 states and 134 transitions. Second operand 8 states. [2018-11-23 14:31:43,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:43,061 INFO L93 Difference]: Finished difference Result 223 states and 286 transitions. [2018-11-23 14:31:43,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 14:31:43,061 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2018-11-23 14:31:43,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:43,062 INFO L225 Difference]: With dead ends: 223 [2018-11-23 14:31:43,062 INFO L226 Difference]: Without dead ends: 146 [2018-11-23 14:31:43,065 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-23 14:31:43,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-11-23 14:31:43,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 128. [2018-11-23 14:31:43,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-11-23 14:31:43,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 155 transitions. [2018-11-23 14:31:43,076 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 155 transitions. Word has length 47 [2018-11-23 14:31:43,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:43,076 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 155 transitions. [2018-11-23 14:31:43,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 14:31:43,076 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 155 transitions. [2018-11-23 14:31:43,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-23 14:31:43,077 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:43,078 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:43,078 INFO L423 AbstractCegarLoop]: === Iteration 15 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:43,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:43,078 INFO L82 PathProgramCache]: Analyzing trace with hash -922396984, now seen corresponding path program 1 times [2018-11-23 14:31:43,079 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:43,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:43,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:43,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:43,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:43,109 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-11-23 14:31:43,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:31:43,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 14:31:43,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 14:31:43,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 14:31:43,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 14:31:43,111 INFO L87 Difference]: Start difference. First operand 128 states and 155 transitions. Second operand 3 states. [2018-11-23 14:31:43,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:43,128 INFO L93 Difference]: Finished difference Result 128 states and 155 transitions. [2018-11-23 14:31:43,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 14:31:43,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-11-23 14:31:43,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:43,129 INFO L225 Difference]: With dead ends: 128 [2018-11-23 14:31:43,129 INFO L226 Difference]: Without dead ends: 127 [2018-11-23 14:31:43,130 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 14:31:43,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-11-23 14:31:43,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-11-23 14:31:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-11-23 14:31:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 153 transitions. [2018-11-23 14:31:43,138 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 153 transitions. Word has length 47 [2018-11-23 14:31:43,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:43,138 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 153 transitions. [2018-11-23 14:31:43,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 14:31:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 153 transitions. [2018-11-23 14:31:43,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-23 14:31:43,139 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:43,139 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:43,140 INFO L423 AbstractCegarLoop]: === Iteration 16 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:43,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:43,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1470464639, now seen corresponding path program 1 times [2018-11-23 14:31:43,140 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:43,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:43,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:43,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:43,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:43,173 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-11-23 14:31:43,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:31:43,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 14:31:43,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 14:31:43,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 14:31:43,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 14:31:43,174 INFO L87 Difference]: Start difference. First operand 127 states and 153 transitions. Second operand 4 states. [2018-11-23 14:31:43,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:43,197 INFO L93 Difference]: Finished difference Result 136 states and 163 transitions. [2018-11-23 14:31:43,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 14:31:43,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-11-23 14:31:43,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:43,199 INFO L225 Difference]: With dead ends: 136 [2018-11-23 14:31:43,199 INFO L226 Difference]: Without dead ends: 128 [2018-11-23 14:31:43,200 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 14:31:43,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-11-23 14:31:43,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2018-11-23 14:31:43,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-11-23 14:31:43,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 150 transitions. [2018-11-23 14:31:43,208 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 150 transitions. Word has length 48 [2018-11-23 14:31:43,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:43,208 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 150 transitions. [2018-11-23 14:31:43,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 14:31:43,208 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 150 transitions. [2018-11-23 14:31:43,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-23 14:31:43,209 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:43,209 INFO L402 BasicCegarLoop]: trace histogram [7, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:43,210 INFO L423 AbstractCegarLoop]: === Iteration 17 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:43,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:43,210 INFO L82 PathProgramCache]: Analyzing trace with hash -524468521, now seen corresponding path program 1 times [2018-11-23 14:31:43,210 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:43,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:43,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:43,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:43,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 13 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-11-23 14:31:43,259 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 14:31:43,259 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/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 14:31:43,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:43,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:31:43,301 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 13 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-11-23 14:31:43,331 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 14:31:43,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-23 14:31:43,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 14:31:43,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 14:31:43,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-23 14:31:43,332 INFO L87 Difference]: Start difference. First operand 126 states and 150 transitions. Second operand 6 states. [2018-11-23 14:31:43,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:43,446 INFO L93 Difference]: Finished difference Result 262 states and 341 transitions. [2018-11-23 14:31:43,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 14:31:43,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2018-11-23 14:31:43,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:43,448 INFO L225 Difference]: With dead ends: 262 [2018-11-23 14:31:43,448 INFO L226 Difference]: Without dead ends: 150 [2018-11-23 14:31:43,449 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-23 14:31:43,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-11-23 14:31:43,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 136. [2018-11-23 14:31:43,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-11-23 14:31:43,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 168 transitions. [2018-11-23 14:31:43,461 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 168 transitions. Word has length 58 [2018-11-23 14:31:43,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:43,461 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 168 transitions. [2018-11-23 14:31:43,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 14:31:43,461 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 168 transitions. [2018-11-23 14:31:43,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-11-23 14:31:43,463 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:43,463 INFO L402 BasicCegarLoop]: trace histogram [14, 12, 9, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:43,464 INFO L423 AbstractCegarLoop]: === Iteration 18 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:43,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:43,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1040597731, now seen corresponding path program 2 times [2018-11-23 14:31:43,464 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:43,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:43,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:43,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:31:43,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 23 proven. 86 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-11-23 14:31:43,524 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 14:31:43,524 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/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 14:31:43,533 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 14:31:43,574 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 14:31:43,575 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 14:31:43,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:31:43,602 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 231 proven. 15 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2018-11-23 14:31:43,628 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 14:31:43,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-23 14:31:43,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 14:31:43,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 14:31:43,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-23 14:31:43,629 INFO L87 Difference]: Start difference. First operand 136 states and 168 transitions. Second operand 6 states. [2018-11-23 14:31:43,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:43,762 INFO L93 Difference]: Finished difference Result 296 states and 391 transitions. [2018-11-23 14:31:43,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 14:31:43,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-11-23 14:31:43,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:43,764 INFO L225 Difference]: With dead ends: 296 [2018-11-23 14:31:43,764 INFO L226 Difference]: Without dead ends: 174 [2018-11-23 14:31:43,765 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-23 14:31:43,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-11-23 14:31:43,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 154. [2018-11-23 14:31:43,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-11-23 14:31:43,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 190 transitions. [2018-11-23 14:31:43,777 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 190 transitions. Word has length 111 [2018-11-23 14:31:43,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:43,777 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 190 transitions. [2018-11-23 14:31:43,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 14:31:43,777 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 190 transitions. [2018-11-23 14:31:43,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-11-23 14:31:43,780 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:31:43,780 INFO L402 BasicCegarLoop]: trace histogram [13, 12, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:31:43,780 INFO L423 AbstractCegarLoop]: === Iteration 19 === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 14:31:43,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:31:43,780 INFO L82 PathProgramCache]: Analyzing trace with hash -296486197, now seen corresponding path program 3 times [2018-11-23 14:31:43,780 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:31:43,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:31:43,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:43,781 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 14:31:43,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:31:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:31:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 49 proven. 77 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-11-23 14:31:43,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 14:31:43,846 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/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 14:31:43,856 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 14:31:43,869 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-23 14:31:43,869 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 14:31:43,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:31:43,908 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 50 proven. 4 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-11-23 14:31:43,926 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 14:31:43,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 9 [2018-11-23 14:31:43,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 14:31:43,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 14:31:43,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-23 14:31:43,927 INFO L87 Difference]: Start difference. First operand 154 states and 190 transitions. Second operand 9 states. [2018-11-23 14:31:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:31:44,045 INFO L93 Difference]: Finished difference Result 209 states and 263 transitions. [2018-11-23 14:31:44,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 14:31:44,050 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2018-11-23 14:31:44,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:31:44,051 INFO L225 Difference]: With dead ends: 209 [2018-11-23 14:31:44,051 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 14:31:44,052 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-11-23 14:31:44,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 14:31:44,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 14:31:44,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 14:31:44,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 14:31:44,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 106 [2018-11-23 14:31:44,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:31:44,053 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 14:31:44,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 14:31:44,053 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 14:31:44,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 14:31:44,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 14:31:44,091 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 14:31:44,096 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 14:31:44,143 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 14:31:44,148 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 14:31:44,417 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 14:31:44,417 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 14:31:44,417 INFO L448 ceAbstractionStarter]: For program point rec1FINAL(lines 11 15) no Hoare annotation was computed. [2018-11-23 14:31:44,417 INFO L448 ceAbstractionStarter]: For program point rec1EXIT(lines 11 15) no Hoare annotation was computed. [2018-11-23 14:31:44,418 INFO L448 ceAbstractionStarter]: For program point rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2018-11-23 14:31:44,418 INFO L448 ceAbstractionStarter]: For program point rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2018-11-23 14:31:44,418 INFO L448 ceAbstractionStarter]: For program point rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2018-11-23 14:31:44,418 INFO L448 ceAbstractionStarter]: For program point rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2018-11-23 14:31:44,418 INFO L448 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-23 14:31:44,418 INFO L451 ceAbstractionStarter]: At program point rec1ENTRY(lines 11 15) the Hoare annotation is: true [2018-11-23 14:31:44,418 INFO L448 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-11-23 14:31:44,421 INFO L448 ceAbstractionStarter]: For program point rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2018-11-23 14:31:44,421 INFO L448 ceAbstractionStarter]: For program point L12(lines 12 13) no Hoare annotation was computed. [2018-11-23 14:31:44,422 INFO L444 ceAbstractionStarter]: At program point L14-2(line 14) the Hoare annotation is: (and (or (= rec1_~i |rec1_#in~i|) (< 2147483647 |rec1_#in~i|)) (or (<= 1 rec1_~i) (< 2147483646 |rec1_#in~i|))) [2018-11-23 14:31:44,422 INFO L448 ceAbstractionStarter]: For program point L14-3(line 14) no Hoare annotation was computed. [2018-11-23 14:31:44,422 INFO L448 ceAbstractionStarter]: For program point rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2018-11-23 14:31:44,422 INFO L448 ceAbstractionStarter]: For program point L14-4(line 14) no Hoare annotation was computed. [2018-11-23 14:31:44,422 INFO L448 ceAbstractionStarter]: For program point L14-5(line 14) no Hoare annotation was computed. [2018-11-23 14:31:44,422 INFO L444 ceAbstractionStarter]: At program point L14-6(line 14) the Hoare annotation is: (or (and (<= 0 (+ |rec1_#t~ret0| 2147483647)) (= rec1_~i |rec1_#in~i|) (<= |rec1_#t~ret0| 1) (<= 1 rec1_~i)) (< 2147483647 |rec1_#in~i|)) [2018-11-23 14:31:44,422 INFO L448 ceAbstractionStarter]: For program point L14-7(line 14) no Hoare annotation was computed. [2018-11-23 14:31:44,422 INFO L444 ceAbstractionStarter]: At program point L14-8(line 14) the Hoare annotation is: (or (and (<= 0 (+ |rec1_#t~ret0| 2147483647)) (<= |rec1_#t~ret1| 0) (= rec1_~i |rec1_#in~i|) (<= |rec1_#t~ret0| 1) (<= 1 rec1_~i)) (< 2147483647 |rec1_#in~i|)) [2018-11-23 14:31:44,422 INFO L448 ceAbstractionStarter]: For program point L14-9(line 14) no Hoare annotation was computed. [2018-11-23 14:31:44,422 INFO L448 ceAbstractionStarter]: For program point L14-10(line 14) no Hoare annotation was computed. [2018-11-23 14:31:44,422 INFO L448 ceAbstractionStarter]: For program point L14-11(line 14) no Hoare annotation was computed. [2018-11-23 14:31:44,422 INFO L448 ceAbstractionStarter]: For program point rec2FINAL(lines 17 21) no Hoare annotation was computed. [2018-11-23 14:31:44,423 INFO L448 ceAbstractionStarter]: For program point rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-23 14:31:44,423 INFO L448 ceAbstractionStarter]: For program point rec2EXIT(lines 17 21) no Hoare annotation was computed. [2018-11-23 14:31:44,423 INFO L444 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (and (< 0 |rec2_#in~j|) (or (and (<= rec2_~j 2147483647) (<= 1 rec2_~j)) (< 2147483647 |rec2_#in~j|))) [2018-11-23 14:31:44,423 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-23 14:31:44,423 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 19) no Hoare annotation was computed. [2018-11-23 14:31:44,423 INFO L448 ceAbstractionStarter]: For program point L20-2(line 20) no Hoare annotation was computed. [2018-11-23 14:31:44,423 INFO L448 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2018-11-23 14:31:44,423 INFO L444 ceAbstractionStarter]: At program point L20-4(line 20) the Hoare annotation is: (and (or (and (<= rec2_~j 2147483647) (<= |rec2_#t~ret3| 1) (<= 0 (+ |rec2_#t~ret3| 2147483647)) (<= 1 rec2_~j)) (< 2147483647 |rec2_#in~j|)) (< 0 |rec2_#in~j|)) [2018-11-23 14:31:44,423 INFO L448 ceAbstractionStarter]: For program point L20-5(line 20) no Hoare annotation was computed. [2018-11-23 14:31:44,423 INFO L448 ceAbstractionStarter]: For program point L20-6(line 20) no Hoare annotation was computed. [2018-11-23 14:31:44,423 INFO L448 ceAbstractionStarter]: For program point L20-7(line 20) no Hoare annotation was computed. [2018-11-23 14:31:44,424 INFO L448 ceAbstractionStarter]: For program point rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-23 14:31:44,424 INFO L451 ceAbstractionStarter]: At program point rec2ENTRY(lines 17 21) the Hoare annotation is: true [2018-11-23 14:31:44,424 INFO L448 ceAbstractionStarter]: For program point rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-23 14:31:44,424 INFO L448 ceAbstractionStarter]: For program point rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-23 14:31:44,424 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 14:31:44,424 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 14:31:44,424 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 14:31:44,424 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 14:31:44,424 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 23 26) the Hoare annotation is: true [2018-11-23 14:31:44,424 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 23 26) no Hoare annotation was computed. [2018-11-23 14:31:44,424 INFO L444 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: (<= main_~x~0 2147483647) [2018-11-23 14:31:44,424 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 23 26) no Hoare annotation was computed. [2018-11-23 14:31:44,425 INFO L448 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-11-23 14:31:44,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:31:44 BoogieIcfgContainer [2018-11-23 14:31:44,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 14:31:44,428 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 14:31:44,428 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 14:31:44,428 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 14:31:44,428 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:31:41" (3/4) ... [2018-11-23 14:31:44,432 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 14:31:44,438 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 14:31:44,438 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure rec1 [2018-11-23 14:31:44,438 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure rec2 [2018-11-23 14:31:44,438 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 14:31:44,442 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-23 14:31:44,443 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 14:31:44,443 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 14:31:44,482 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3b4e7d25-0b43-438f-a67a-2e3e6e7ed1ad/bin-2019/uautomizer/witness.graphml [2018-11-23 14:31:44,482 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 14:31:44,483 INFO L168 Benchmark]: Toolchain (without parser) took 3339.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.6 MB). Free memory was 958.0 MB in the beginning and 996.5 MB in the end (delta: -38.5 MB). Peak memory consumption was 168.1 MB. Max. memory is 11.5 GB. [2018-11-23 14:31:44,485 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 14:31:44,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.27 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 14:31:44,485 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.71 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 14:31:44,486 INFO L168 Benchmark]: Boogie Preprocessor took 11.26 ms. Allocated memory is still 1.0 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 14:31:44,486 INFO L168 Benchmark]: RCFGBuilder took 205.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-23 14:31:44,486 INFO L168 Benchmark]: TraceAbstraction took 2910.86 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.0 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 117.8 MB). Peak memory consumption was 182.8 MB. Max. memory is 11.5 GB. [2018-11-23 14:31:44,487 INFO L168 Benchmark]: Witness Printer took 54.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 996.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 11.5 GB. [2018-11-23 14:31:44,488 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 142.27 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.71 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.26 ms. Allocated memory is still 1.0 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 205.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2910.86 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.0 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 117.8 MB). Peak memory consumption was 182.8 MB. Max. memory is 11.5 GB. * Witness Printer took 54.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 996.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 49 locations, 10 error locations. SAFE Result, 2.8s OverallTime, 19 OverallIterations, 14 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 779 SDtfs, 293 SDslu, 1694 SDs, 0 SdLazy, 575 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 424 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=18, 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: 0.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 121 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 343 PreInvPairs, 383 NumberOfFragments, 111 HoareAnnotationTreeSize, 343 FomulaSimplifications, 1817 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 12 FomulaSimplificationsInter, 228 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 1079 NumberOfCodeBlocks, 999 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1056 ConstructedInterpolants, 0 QuantifiedInterpolants, 99472 SizeOfPredicates, 5 NumberOfNonLiveVariables, 510 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 23 InterpolantComputations, 15 PerfectInterpolantSequences, 1738/1950 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...