./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e1a41d80-21f0-4921-bd7d-aad119eb7170/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e1a41d80-21f0-4921-bd7d-aad119eb7170/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e1a41d80-21f0-4921-bd7d-aad119eb7170/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e1a41d80-21f0-4921-bd7d-aad119eb7170/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e1a41d80-21f0-4921-bd7d-aad119eb7170/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e1a41d80-21f0-4921-bd7d-aad119eb7170/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 31d0c4253184c01eb9f9573658b07bed7aa94585 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:47:00,125 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:47:00,127 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:47:00,137 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:47:00,137 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:47:00,138 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:47:00,139 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:47:00,140 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:47:00,142 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:47:00,144 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:47:00,144 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:47:00,145 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:47:00,145 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:47:00,146 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:47:00,147 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:47:00,147 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:47:00,148 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:47:00,151 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:47:00,152 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:47:00,154 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:47:00,155 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:47:00,156 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:47:00,158 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:47:00,158 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:47:00,158 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:47:00,159 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:47:00,160 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:47:00,161 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:47:00,162 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:47:00,163 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:47:00,163 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:47:00,164 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:47:00,164 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:47:00,164 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:47:00,166 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:47:00,166 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:47:00,167 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e1a41d80-21f0-4921-bd7d-aad119eb7170/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-10-27 05:47:00,179 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:47:00,179 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:47:00,180 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:47:00,180 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-27 05:47:00,181 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 05:47:00,181 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 05:47:00,182 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 05:47:00,182 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:47:00,182 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 05:47:00,182 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:47:00,182 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:47:00,182 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:47:00,183 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:47:00,183 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:47:00,183 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-10-27 05:47:00,183 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:47:00,183 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:47:00,183 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:47:00,184 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:47:00,184 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:47:00,184 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:47:00,184 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:47:00,184 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:47:00,184 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:47:00,187 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:47:00,187 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 05:47:00,187 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:47:00,187 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:47:00,187 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_e1a41d80-21f0-4921-bd7d-aad119eb7170/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 -> 31d0c4253184c01eb9f9573658b07bed7aa94585 [2018-10-27 05:47:00,218 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:47:00,229 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:47:00,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:47:00,234 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:47:00,234 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:47:00,235 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e1a41d80-21f0-4921-bd7d-aad119eb7170/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2_true-termination_true-no-overflow.c [2018-10-27 05:47:00,285 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e1a41d80-21f0-4921-bd7d-aad119eb7170/bin-2019/uautomizer/data/07c2edf6c/0e9653007d3a4f1f962ce4866946ac10/FLAG4ca299343 [2018-10-27 05:47:00,684 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:47:00,685 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e1a41d80-21f0-4921-bd7d-aad119eb7170/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2_true-termination_true-no-overflow.c [2018-10-27 05:47:00,690 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e1a41d80-21f0-4921-bd7d-aad119eb7170/bin-2019/uautomizer/data/07c2edf6c/0e9653007d3a4f1f962ce4866946ac10/FLAG4ca299343 [2018-10-27 05:47:00,703 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e1a41d80-21f0-4921-bd7d-aad119eb7170/bin-2019/uautomizer/data/07c2edf6c/0e9653007d3a4f1f962ce4866946ac10 [2018-10-27 05:47:00,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:47:00,707 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:47:00,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:47:00,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:47:00,712 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:47:00,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:47:00" (1/1) ... [2018-10-27 05:47:00,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76955b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:47:00, skipping insertion in model container [2018-10-27 05:47:00,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:47:00" (1/1) ... [2018-10-27 05:47:00,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:47:00,744 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:47:00,906 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:47:00,908 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:47:00,922 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:47:00,936 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:47:00,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:47:00 WrapperNode [2018-10-27 05:47:00,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:47:00,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:47:00,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:47:00,937 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:47:00,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:47:00" (1/1) ... [2018-10-27 05:47:00,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:47:00" (1/1) ... [2018-10-27 05:47:00,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:47:00" (1/1) ... [2018-10-27 05:47:00,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:47:00" (1/1) ... [2018-10-27 05:47:00,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:47:00" (1/1) ... [2018-10-27 05:47:00,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:47:00" (1/1) ... [2018-10-27 05:47:00,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:47:00" (1/1) ... [2018-10-27 05:47:00,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:47:00,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:47:00,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:47:00,967 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:47:00,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:47:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e1a41d80-21f0-4921-bd7d-aad119eb7170/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 [2018-10-27 05:47:01,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:47:01,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:47:01,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:47:01,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-10-27 05:47:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:47:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:47:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:47:01,431 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:47:01,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:47:01 BoogieIcfgContainer [2018-10-27 05:47:01,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:47:01,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:47:01,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:47:01,436 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:47:01,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:47:00" (1/3) ... [2018-10-27 05:47:01,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ee3c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:47:01, skipping insertion in model container [2018-10-27 05:47:01,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:47:00" (2/3) ... [2018-10-27 05:47:01,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ee3c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:47:01, skipping insertion in model container [2018-10-27 05:47:01,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:47:01" (3/3) ... [2018-10-27 05:47:01,442 INFO L112 eAbstractionObserver]: Analyzing ICFG Urban-WST2013-Fig2_true-termination_true-no-overflow.c [2018-10-27 05:47:01,452 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:47:01,462 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-10-27 05:47:01,501 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-10-27 05:47:01,561 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 05:47:01,565 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:47:01,565 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:47:01,565 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:47:01,565 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:47:01,565 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:47:01,565 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:47:01,565 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:47:01,566 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:47:01,602 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-10-27 05:47:01,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-27 05:47:01,613 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:47:01,614 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:47:01,616 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:47:01,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:47:01,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1432253197, now seen corresponding path program 1 times [2018-10-27 05:47:01,633 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 05:47:01,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 05:47:01,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:47:01,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:47:01,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:47:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:47:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:47:01,746 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:47:01,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:47:01,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 05:47:01,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 05:47:01,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 05:47:01,767 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-10-27 05:47:01,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:47:01,788 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2018-10-27 05:47:01,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 05:47:01,789 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-10-27 05:47:01,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:47:01,800 INFO L225 Difference]: With dead ends: 39 [2018-10-27 05:47:01,800 INFO L226 Difference]: Without dead ends: 17 [2018-10-27 05:47:01,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 05:47:01,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-27 05:47:01,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-27 05:47:01,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-27 05:47:01,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-10-27 05:47:01,842 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2018-10-27 05:47:01,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:47:01,842 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-10-27 05:47:01,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 05:47:01,842 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-10-27 05:47:01,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 05:47:01,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:47:01,843 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:47:01,844 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:47:01,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:47:01,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1450187957, now seen corresponding path program 1 times [2018-10-27 05:47:01,844 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 05:47:01,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 05:47:01,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:47:01,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:47:01,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:47:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:47:01,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:47:01,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:47:01,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:47:01,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:47:01,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:47:01,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:47:01,909 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2018-10-27 05:47:02,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:47:02,009 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2018-10-27 05:47:02,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:47:02,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-10-27 05:47:02,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:47:02,011 INFO L225 Difference]: With dead ends: 33 [2018-10-27 05:47:02,011 INFO L226 Difference]: Without dead ends: 21 [2018-10-27 05:47:02,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:47:02,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-27 05:47:02,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-27 05:47:02,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-27 05:47:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-10-27 05:47:02,018 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 10 [2018-10-27 05:47:02,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:47:02,019 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-10-27 05:47:02,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:47:02,020 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-10-27 05:47:02,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 05:47:02,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:47:02,020 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:47:02,021 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:47:02,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:47:02,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1450187902, now seen corresponding path program 1 times [2018-10-27 05:47:02,021 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 05:47:02,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 05:47:02,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:47:02,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:47:02,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:47:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:47:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:47:02,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:47:02,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:47:02,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:47:02,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:47:02,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:47:02,100 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 3 states. [2018-10-27 05:47:02,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:47:02,131 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-10-27 05:47:02,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:47:02,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-10-27 05:47:02,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:47:02,133 INFO L225 Difference]: With dead ends: 23 [2018-10-27 05:47:02,133 INFO L226 Difference]: Without dead ends: 22 [2018-10-27 05:47:02,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:47:02,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-27 05:47:02,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-10-27 05:47:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-27 05:47:02,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-10-27 05:47:02,137 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2018-10-27 05:47:02,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:47:02,138 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-10-27 05:47:02,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:47:02,138 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-10-27 05:47:02,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-27 05:47:02,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:47:02,139 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:47:02,139 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:47:02,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:47:02,139 INFO L82 PathProgramCache]: Analyzing trace with hash -802592061, now seen corresponding path program 1 times [2018-10-27 05:47:02,139 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 05:47:02,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 05:47:02,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:47:02,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:47:02,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:47:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:47:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:47:02,206 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:47:02,206 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e1a41d80-21f0-4921-bd7d-aad119eb7170/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 [2018-10-27 05:47:02,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:47:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:47:02,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:47:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-27 05:47:02,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:47:02,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-10-27 05:47:02,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 05:47:02,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 05:47:02,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-27 05:47:02,312 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2018-10-27 05:47:02,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:47:02,433 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2018-10-27 05:47:02,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 05:47:02,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-10-27 05:47:02,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:47:02,435 INFO L225 Difference]: With dead ends: 38 [2018-10-27 05:47:02,436 INFO L226 Difference]: Without dead ends: 23 [2018-10-27 05:47:02,436 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 05:47:02,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-27 05:47:02,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-27 05:47:02,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-27 05:47:02,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-10-27 05:47:02,441 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 14 [2018-10-27 05:47:02,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:47:02,441 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-10-27 05:47:02,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 05:47:02,441 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-10-27 05:47:02,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-27 05:47:02,442 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:47:02,442 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:47:02,442 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:47:02,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:47:02,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1896632678, now seen corresponding path program 1 times [2018-10-27 05:47:02,443 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 05:47:02,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 05:47:02,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:47:02,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:47:02,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:47:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:47:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-27 05:47:02,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:47:02,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:47:02,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:47:02,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:47:02,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:47:02,495 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 3 states. [2018-10-27 05:47:02,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:47:02,546 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-10-27 05:47:02,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:47:02,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-10-27 05:47:02,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:47:02,547 INFO L225 Difference]: With dead ends: 23 [2018-10-27 05:47:02,547 INFO L226 Difference]: Without dead ends: 22 [2018-10-27 05:47:02,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:47:02,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-27 05:47:02,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-27 05:47:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-27 05:47:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-10-27 05:47:02,552 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 19 [2018-10-27 05:47:02,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:47:02,552 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-10-27 05:47:02,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:47:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-10-27 05:47:02,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-27 05:47:02,553 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:47:02,553 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:47:02,554 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:47:02,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:47:02,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1896634376, now seen corresponding path program 1 times [2018-10-27 05:47:02,554 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 05:47:02,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 05:47:02,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:47:02,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:47:02,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:47:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:47:02,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-27 05:47:02,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:47:02,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:47:02,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:47:02,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:47:02,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:47:02,656 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 3 states. [2018-10-27 05:47:02,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:47:02,765 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-10-27 05:47:02,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:47:02,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-10-27 05:47:02,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:47:02,766 INFO L225 Difference]: With dead ends: 22 [2018-10-27 05:47:02,766 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 05:47:02,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:47:02,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 05:47:02,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 05:47:02,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 05:47:02,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 05:47:02,767 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-10-27 05:47:02,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:47:02,768 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 05:47:02,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:47:02,768 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 05:47:02,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 05:47:02,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-27 05:47:02,834 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-27 05:47:02,834 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-27 05:47:02,834 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-27 05:47:02,834 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-27 05:47:02,834 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-27 05:47:02,834 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-27 05:47:02,834 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 14 27) no Hoare annotation was computed. [2018-10-27 05:47:02,835 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-10-27 05:47:02,835 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 23) no Hoare annotation was computed. [2018-10-27 05:47:02,835 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 25) no Hoare annotation was computed. [2018-10-27 05:47:02,835 INFO L421 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: (and (<= main_~x2~0 10) (<= main_~x1~0 10) (<= 0 (+ main_~x1~0 2147483648))) [2018-10-27 05:47:02,835 INFO L425 ceAbstractionStarter]: For program point L21-4(lines 21 23) no Hoare annotation was computed. [2018-10-27 05:47:02,835 INFO L421 ceAbstractionStarter]: At program point L19-3(lines 19 25) the Hoare annotation is: (<= 0 (+ main_~x1~0 2147483648)) [2018-10-27 05:47:02,836 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-10-27 05:47:02,836 INFO L425 ceAbstractionStarter]: For program point L19-4(lines 19 25) no Hoare annotation was computed. [2018-10-27 05:47:02,836 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 14 27) no Hoare annotation was computed. [2018-10-27 05:47:02,836 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 14 27) the Hoare annotation is: true [2018-10-27 05:47:02,836 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-10-27 05:47:02,836 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-10-27 05:47:02,836 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-10-27 05:47:02,836 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-10-27 05:47:02,837 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-10-27 05:47:02,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:47:02 BoogieIcfgContainer [2018-10-27 05:47:02,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:47:02,848 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 05:47:02,848 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 05:47:02,848 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 05:47:02,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:47:01" (3/4) ... [2018-10-27 05:47:02,852 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-27 05:47:02,858 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-27 05:47:02,858 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-27 05:47:02,863 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-10-27 05:47:02,863 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-27 05:47:02,863 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-27 05:47:02,901 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e1a41d80-21f0-4921-bd7d-aad119eb7170/bin-2019/uautomizer/witness.graphml [2018-10-27 05:47:02,901 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 05:47:02,902 INFO L168 Benchmark]: Toolchain (without parser) took 2195.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 962.3 MB in the beginning and 1.1 GB in the end (delta: -108.6 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:47:02,904 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:47:02,904 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.71 ms. Allocated memory is still 1.0 GB. Free memory was 962.3 MB in the beginning and 951.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:47:02,904 INFO L168 Benchmark]: Boogie Preprocessor took 29.39 ms. Allocated memory is still 1.0 GB. Free memory is still 951.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:47:02,905 INFO L168 Benchmark]: RCFGBuilder took 465.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 951.6 MB in the beginning and 1.1 GB in the end (delta: -183.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. [2018-10-27 05:47:02,905 INFO L168 Benchmark]: TraceAbstraction took 1415.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 58.6 MB). Peak memory consumption was 58.6 MB. Max. memory is 11.5 GB. [2018-10-27 05:47:02,906 INFO L168 Benchmark]: Witness Printer took 53.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-27 05:47:02,909 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 228.71 ms. Allocated memory is still 1.0 GB. Free memory was 962.3 MB in the beginning and 951.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.39 ms. Allocated memory is still 1.0 GB. Free memory is still 951.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 465.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 951.6 MB in the beginning and 1.1 GB in the end (delta: -183.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1415.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 58.6 MB). Peak memory consumption was 58.6 MB. Max. memory is 11.5 GB. * Witness Printer took 53.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (x2 <= 10 && x1 <= 10) && 0 <= x1 + 2147483648 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 <= x1 + 2147483648 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 4 error locations. SAFE Result, 1.2s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 84 SDtfs, 20 SDslu, 44 SDs, 0 SdLazy, 51 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 21 HoareAnnotationTreeSize, 6 FomulaSimplifications, 34 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 2720 SizeOfPredicates, 0 NumberOfNonLiveVariables, 31 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 22/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...