./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified_false-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified_false-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/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 f55c3c29f65baba8ba49ec35fe2e62008dfb74b3 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 18:59:52,636 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 18:59:52,637 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 18:59:52,643 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 18:59:52,643 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 18:59:52,643 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 18:59:52,644 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 18:59:52,645 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 18:59:52,646 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 18:59:52,646 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 18:59:52,647 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 18:59:52,647 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 18:59:52,647 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 18:59:52,648 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 18:59:52,648 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 18:59:52,649 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 18:59:52,649 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 18:59:52,650 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 18:59:52,651 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 18:59:52,652 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 18:59:52,652 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 18:59:52,653 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 18:59:52,654 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 18:59:52,654 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 18:59:52,654 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 18:59:52,655 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 18:59:52,655 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 18:59:52,655 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 18:59:52,656 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 18:59:52,656 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 18:59:52,656 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 18:59:52,657 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 18:59:52,657 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 18:59:52,657 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 18:59:52,658 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 18:59:52,658 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 18:59:52,658 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-12-01 18:59:52,665 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 18:59:52,665 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 18:59:52,666 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 18:59:52,666 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 18:59:52,666 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 18:59:52,666 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 18:59:52,666 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 18:59:52,666 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 18:59:52,667 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-01 18:59:52,667 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 18:59:52,667 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 18:59:52,667 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 18:59:52,667 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 18:59:52,667 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 18:59:52,667 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-01 18:59:52,667 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 18:59:52,667 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 18:59:52,667 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 18:59:52,667 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 18:59:52,667 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 18:59:52,668 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 18:59:52,668 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 18:59:52,668 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 18:59:52,668 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 18:59:52,668 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 18:59:52,668 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 18:59:52,668 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 18:59:52,668 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 18:59:52,668 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 18:59:52,668 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_eb991e85-3d78-451a-aa40-4592361b0512/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 -> f55c3c29f65baba8ba49ec35fe2e62008dfb74b3 [2018-12-01 18:59:52,685 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 18:59:52,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 18:59:52,694 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 18:59:52,695 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 18:59:52,695 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 18:59:52,695 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified_false-termination_true-no-overflow.c [2018-12-01 18:59:52,730 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/bin-2019/uautomizer/data/c00bfe572/c4ca1b3e52ae4652bf258699c15ac79d/FLAGf1d434f8f [2018-12-01 18:59:53,139 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 18:59:53,140 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified_false-termination_true-no-overflow.c [2018-12-01 18:59:53,143 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/bin-2019/uautomizer/data/c00bfe572/c4ca1b3e52ae4652bf258699c15ac79d/FLAGf1d434f8f [2018-12-01 18:59:53,151 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/bin-2019/uautomizer/data/c00bfe572/c4ca1b3e52ae4652bf258699c15ac79d [2018-12-01 18:59:53,153 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 18:59:53,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 18:59:53,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 18:59:53,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 18:59:53,156 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 18:59:53,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:59:53" (1/1) ... [2018-12-01 18:59:53,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3033e242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:59:53, skipping insertion in model container [2018-12-01 18:59:53,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:59:53" (1/1) ... [2018-12-01 18:59:53,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 18:59:53,172 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 18:59:53,252 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 18:59:53,254 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 18:59:53,263 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 18:59:53,270 INFO L195 MainTranslator]: Completed translation [2018-12-01 18:59:53,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:59:53 WrapperNode [2018-12-01 18:59:53,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 18:59:53,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 18:59:53,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 18:59:53,271 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 18:59:53,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:59:53" (1/1) ... [2018-12-01 18:59:53,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:59:53" (1/1) ... [2018-12-01 18:59:53,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 18:59:53,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 18:59:53,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 18:59:53,283 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 18:59:53,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:59:53" (1/1) ... [2018-12-01 18:59:53,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:59:53" (1/1) ... [2018-12-01 18:59:53,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:59:53" (1/1) ... [2018-12-01 18:59:53,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:59:53" (1/1) ... [2018-12-01 18:59:53,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:59:53" (1/1) ... [2018-12-01 18:59:53,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:59:53" (1/1) ... [2018-12-01 18:59:53,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:59:53" (1/1) ... [2018-12-01 18:59:53,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 18:59:53,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 18:59:53,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 18:59:53,295 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 18:59:53,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:59:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 18:59:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 18:59:53,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 18:59:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 18:59:53,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 18:59:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 18:59:53,355 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 18:59:53,443 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 18:59:53,443 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-01 18:59:53,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:59:53 BoogieIcfgContainer [2018-12-01 18:59:53,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 18:59:53,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 18:59:53,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 18:59:53,446 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 18:59:53,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 06:59:53" (1/3) ... [2018-12-01 18:59:53,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3196ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 06:59:53, skipping insertion in model container [2018-12-01 18:59:53,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:59:53" (2/3) ... [2018-12-01 18:59:53,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3196ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 06:59:53, skipping insertion in model container [2018-12-01 18:59:53,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:59:53" (3/3) ... [2018-12-01 18:59:53,448 INFO L112 eAbstractionObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1-modified_false-termination_true-no-overflow.c [2018-12-01 18:59:53,454 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 18:59:53,458 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-01 18:59:53,467 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-01 18:59:53,485 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 18:59:53,486 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 18:59:53,486 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 18:59:53,486 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 18:59:53,486 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 18:59:53,486 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 18:59:53,486 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 18:59:53,486 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 18:59:53,486 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 18:59:53,497 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-12-01 18:59:53,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-01 18:59:53,500 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:59:53,500 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:59:53,502 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 18:59:53,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:59:53,505 INFO L82 PathProgramCache]: Analyzing trace with hash 350361843, now seen corresponding path program 1 times [2018-12-01 18:59:53,506 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:59:53,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:59:53,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:59:53,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:59:53,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:59:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:59:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:59:53,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:59:53,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 18:59:53,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 18:59:53,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 18:59:53,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 18:59:53,604 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2018-12-01 18:59:53,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:59:53,655 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2018-12-01 18:59:53,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 18:59:53,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-12-01 18:59:53,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:59:53,661 INFO L225 Difference]: With dead ends: 33 [2018-12-01 18:59:53,661 INFO L226 Difference]: Without dead ends: 18 [2018-12-01 18:59:53,663 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-01 18:59:53,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-01 18:59:53,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-01 18:59:53,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-01 18:59:53,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-12-01 18:59:53,685 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2018-12-01 18:59:53,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:59:53,686 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-12-01 18:59:53,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 18:59:53,686 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-12-01 18:59:53,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-01 18:59:53,686 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:59:53,686 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:59:53,686 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 18:59:53,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:59:53,687 INFO L82 PathProgramCache]: Analyzing trace with hash 350362035, now seen corresponding path program 1 times [2018-12-01 18:59:53,687 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:59:53,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:59:53,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:59:53,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:59:53,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:59:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:59:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:59:53,707 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:59:53,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 18:59:53,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 18:59:53,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 18:59:53,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 18:59:53,709 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2018-12-01 18:59:53,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:59:53,737 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-12-01 18:59:53,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 18:59:53,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-12-01 18:59:53,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:59:53,738 INFO L225 Difference]: With dead ends: 20 [2018-12-01 18:59:53,738 INFO L226 Difference]: Without dead ends: 18 [2018-12-01 18:59:53,739 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-01 18:59:53,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-01 18:59:53,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-01 18:59:53,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-01 18:59:53,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-12-01 18:59:53,741 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2018-12-01 18:59:53,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:59:53,741 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-12-01 18:59:53,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 18:59:53,741 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-12-01 18:59:53,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-01 18:59:53,742 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:59:53,742 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:59:53,742 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 18:59:53,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:59:53,742 INFO L82 PathProgramCache]: Analyzing trace with hash 865022446, now seen corresponding path program 1 times [2018-12-01 18:59:53,742 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:59:53,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:59:53,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:59:53,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:59:53,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:59:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:59:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:59:53,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 18:59:53,777 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 18:59:53,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:59:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:59:53,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:59:53,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:59:53,853 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-01 18:59:53,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2018-12-01 18:59:53,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-01 18:59:53,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-01 18:59:53,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-01 18:59:53,854 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 8 states. [2018-12-01 18:59:53,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:59:53,900 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2018-12-01 18:59:53,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 18:59:53,900 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-12-01 18:59:53,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:59:53,902 INFO L225 Difference]: With dead ends: 28 [2018-12-01 18:59:53,902 INFO L226 Difference]: Without dead ends: 27 [2018-12-01 18:59:53,903 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-12-01 18:59:53,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-01 18:59:53,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2018-12-01 18:59:53,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-01 18:59:53,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2018-12-01 18:59:53,907 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2018-12-01 18:59:53,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:59:53,907 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-12-01 18:59:53,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-01 18:59:53,907 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2018-12-01 18:59:53,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-01 18:59:53,908 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:59:53,908 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:59:53,908 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 18:59:53,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:59:53,908 INFO L82 PathProgramCache]: Analyzing trace with hash 865022638, now seen corresponding path program 1 times [2018-12-01 18:59:53,908 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:59:53,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:59:53,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:59:53,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:59:53,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:59:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:59:53,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:59:53,936 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 18:59:53,936 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 18:59:53,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:59:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:59:53,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:59:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:59:53,978 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 18:59:53,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-12-01 18:59:53,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-01 18:59:53,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-01 18:59:53,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-01 18:59:53,979 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 8 states. [2018-12-01 18:59:54,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:59:54,085 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2018-12-01 18:59:54,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-01 18:59:54,085 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-12-01 18:59:54,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:59:54,086 INFO L225 Difference]: With dead ends: 52 [2018-12-01 18:59:54,086 INFO L226 Difference]: Without dead ends: 51 [2018-12-01 18:59:54,087 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2018-12-01 18:59:54,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-12-01 18:59:54,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2018-12-01 18:59:54,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-01 18:59:54,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2018-12-01 18:59:54,093 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 13 [2018-12-01 18:59:54,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:59:54,093 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2018-12-01 18:59:54,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-01 18:59:54,093 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2018-12-01 18:59:54,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-01 18:59:54,094 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:59:54,094 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:59:54,094 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 18:59:54,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:59:54,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1042517224, now seen corresponding path program 1 times [2018-12-01 18:59:54,094 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:59:54,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:59:54,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:59:54,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:59:54,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:59:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:59:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:59:54,125 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 18:59:54,125 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 18:59:54,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:59:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:59:54,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:59:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:59:54,172 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-01 18:59:54,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2018-12-01 18:59:54,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-01 18:59:54,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 18:59:54,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-12-01 18:59:54,173 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 7 states. [2018-12-01 18:59:54,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:59:54,196 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2018-12-01 18:59:54,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 18:59:54,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-12-01 18:59:54,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:59:54,197 INFO L225 Difference]: With dead ends: 35 [2018-12-01 18:59:54,198 INFO L226 Difference]: Without dead ends: 34 [2018-12-01 18:59:54,198 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-12-01 18:59:54,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-01 18:59:54,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2018-12-01 18:59:54,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-01 18:59:54,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2018-12-01 18:59:54,202 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 13 [2018-12-01 18:59:54,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:59:54,203 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2018-12-01 18:59:54,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-01 18:59:54,203 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2018-12-01 18:59:54,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-01 18:59:54,203 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:59:54,203 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:59:54,203 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 18:59:54,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:59:54,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1042517416, now seen corresponding path program 1 times [2018-12-01 18:59:54,204 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:59:54,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:59:54,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:59:54,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:59:54,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:59:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:59:54,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:59:54,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 18:59:54,226 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 18:59:54,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:59:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:59:54,238 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:59:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:59:54,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-01 18:59:54,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2018-12-01 18:59:54,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-01 18:59:54,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-01 18:59:54,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-01 18:59:54,277 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 8 states. [2018-12-01 18:59:54,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:59:54,324 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2018-12-01 18:59:54,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 18:59:54,325 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-12-01 18:59:54,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:59:54,325 INFO L225 Difference]: With dead ends: 37 [2018-12-01 18:59:54,325 INFO L226 Difference]: Without dead ends: 36 [2018-12-01 18:59:54,325 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-12-01 18:59:54,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-01 18:59:54,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 24. [2018-12-01 18:59:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-01 18:59:54,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-12-01 18:59:54,328 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 13 [2018-12-01 18:59:54,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:59:54,328 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-12-01 18:59:54,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-01 18:59:54,328 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-12-01 18:59:54,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-01 18:59:54,328 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:59:54,329 INFO L402 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:59:54,329 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 18:59:54,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:59:54,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1987862754, now seen corresponding path program 1 times [2018-12-01 18:59:54,329 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:59:54,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:59:54,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:59:54,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:59:54,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:59:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:59:54,365 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:59:54,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 18:59:54,366 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 18:59:54,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:59:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:59:54,381 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:59:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:59:54,442 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 18:59:54,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-12-01 18:59:54,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-01 18:59:54,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-01 18:59:54,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-12-01 18:59:54,443 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 11 states. [2018-12-01 18:59:54,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:59:54,781 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2018-12-01 18:59:54,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-12-01 18:59:54,781 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2018-12-01 18:59:54,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:59:54,781 INFO L225 Difference]: With dead ends: 60 [2018-12-01 18:59:54,781 INFO L226 Difference]: Without dead ends: 0 [2018-12-01 18:59:54,782 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=382, Invalid=878, Unknown=0, NotChecked=0, Total=1260 [2018-12-01 18:59:54,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-01 18:59:54,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-01 18:59:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-01 18:59:54,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-01 18:59:54,782 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-12-01 18:59:54,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:59:54,783 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 18:59:54,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-01 18:59:54,783 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-01 18:59:54,783 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-01 18:59:54,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-01 18:59:54,873 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-01 18:59:54,873 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-01 18:59:54,873 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-01 18:59:54,874 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-01 18:59:54,874 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-01 18:59:54,874 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-01 18:59:54,874 INFO L448 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-12-01 18:59:54,874 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 16 30) no Hoare annotation was computed. [2018-12-01 18:59:54,874 INFO L448 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-12-01 18:59:54,874 INFO L448 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-12-01 18:59:54,874 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-12-01 18:59:54,874 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 16 30) no Hoare annotation was computed. [2018-12-01 18:59:54,875 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-12-01 18:59:54,875 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-12-01 18:59:54,875 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 16 30) the Hoare annotation is: true [2018-12-01 18:59:54,875 INFO L448 ceAbstractionStarter]: For program point L22(lines 22 26) no Hoare annotation was computed. [2018-12-01 18:59:54,875 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 28) no Hoare annotation was computed. [2018-12-01 18:59:54,875 INFO L444 ceAbstractionStarter]: At program point L22-2(lines 21 27) the Hoare annotation is: (and (<= 0 main_~y1~0) (<= 0 main_~y2~0) (<= main_~y2~0 2147483647) (<= main_~y1~0 2147483647)) [2018-12-01 18:59:54,875 INFO L448 ceAbstractionStarter]: For program point L20-1(lines 20 28) no Hoare annotation was computed. [2018-12-01 18:59:54,875 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-12-01 18:59:54,875 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-12-01 18:59:54,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 06:59:54 BoogieIcfgContainer [2018-12-01 18:59:54,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 18:59:54,884 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 18:59:54,884 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 18:59:54,884 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 18:59:54,884 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:59:53" (3/4) ... [2018-12-01 18:59:54,887 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-01 18:59:54,891 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-01 18:59:54,892 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-01 18:59:54,895 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-01 18:59:54,895 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-01 18:59:54,895 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-01 18:59:54,924 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_eb991e85-3d78-451a-aa40-4592361b0512/bin-2019/uautomizer/witness.graphml [2018-12-01 18:59:54,924 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 18:59:54,925 INFO L168 Benchmark]: Toolchain (without parser) took 1771.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 958.7 MB in the beginning and 862.1 MB in the end (delta: 96.6 MB). Peak memory consumption was 253.3 MB. Max. memory is 11.5 GB. [2018-12-01 18:59:54,926 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:59:54,926 INFO L168 Benchmark]: CACSL2BoogieTranslator took 116.20 ms. Allocated memory is still 1.0 GB. Free memory was 958.7 MB in the beginning and 946.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-01 18:59:54,926 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.46 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:59:54,927 INFO L168 Benchmark]: Boogie Preprocessor took 12.01 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:59:54,927 INFO L168 Benchmark]: RCFGBuilder took 149.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -194.3 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-12-01 18:59:54,927 INFO L168 Benchmark]: TraceAbstraction took 1439.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 865.4 MB in the end (delta: 275.8 MB). Peak memory consumption was 275.8 MB. Max. memory is 11.5 GB. [2018-12-01 18:59:54,928 INFO L168 Benchmark]: Witness Printer took 40.62 ms. Allocated memory is still 1.2 GB. Free memory was 865.4 MB in the beginning and 862.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-12-01 18:59:54,930 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 116.20 ms. Allocated memory is still 1.0 GB. Free memory was 958.7 MB in the beginning and 946.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.46 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.01 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 149.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -194.3 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1439.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 865.4 MB in the end (delta: 275.8 MB). Peak memory consumption was 275.8 MB. Max. memory is 11.5 GB. * Witness Printer took 40.62 ms. Allocated memory is still 1.2 GB. Free memory was 865.4 MB in the beginning and 862.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((0 <= y1 && 0 <= y2) && y2 <= 2147483647) && y1 <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 4 error locations. SAFE Result, 1.3s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 179 SDslu, 132 SDs, 0 SdLazy, 458 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 42 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 15 NumberOfFragments, 18 HoareAnnotationTreeSize, 5 FomulaSimplifications, 263 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 396 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 8664 SizeOfPredicates, 0 NumberOfNonLiveVariables, 157 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 20/50 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...