./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4_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_094c7106-8b5a-4b35-855c-e68e7c144d8f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_094c7106-8b5a-4b35-855c-e68e7c144d8f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_094c7106-8b5a-4b35-855c-e68e7c144d8f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_094c7106-8b5a-4b35-855c-e68e7c144d8f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_094c7106-8b5a-4b35-855c-e68e7c144d8f/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_094c7106-8b5a-4b35-855c-e68e7c144d8f/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 f560e32afd5a40adf4a98abbf810cb377947c4f4 ................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 05:43:48,431 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:43:48,433 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:43:48,445 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:43:48,445 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:43:48,447 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:43:48,449 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:43:48,451 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:43:48,453 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:43:48,455 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:43:48,457 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:43:48,458 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:43:48,458 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:43:48,460 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:43:48,467 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:43:48,468 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:43:48,468 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:43:48,471 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:43:48,473 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:43:48,477 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:43:48,478 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:43:48,478 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:43:48,480 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:43:48,480 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:43:48,480 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:43:48,481 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:43:48,483 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:43:48,484 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:43:48,485 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:43:48,486 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:43:48,487 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:43:48,488 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:43:48,489 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:43:48,489 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:43:48,490 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:43:48,490 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:43:48,491 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_094c7106-8b5a-4b35-855c-e68e7c144d8f/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-10-27 05:43:48,505 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:43:48,506 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:43:48,507 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:43:48,507 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-27 05:43:48,508 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 05:43:48,509 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 05:43:48,509 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 05:43:48,509 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:43:48,509 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 05:43:48,509 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:43:48,510 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:43:48,510 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:43:48,510 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:43:48,510 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:43:48,510 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-10-27 05:43:48,510 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:43:48,510 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:43:48,510 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:43:48,511 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:43:48,511 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:43:48,511 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:43:48,511 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:43:48,511 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:43:48,511 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:43:48,511 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:43:48,511 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 05:43:48,512 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:43:48,512 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:43:48,512 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_094c7106-8b5a-4b35-855c-e68e7c144d8f/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 -> f560e32afd5a40adf4a98abbf810cb377947c4f4 [2018-10-27 05:43:48,541 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:43:48,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:43:48,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:43:48,555 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:43:48,555 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:43:48,556 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_094c7106-8b5a-4b35-855c-e68e7c144d8f/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4_true-termination_true-no-overflow.c [2018-10-27 05:43:48,607 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_094c7106-8b5a-4b35-855c-e68e7c144d8f/bin-2019/uautomizer/data/3877b10e1/76250c6500864cf19b8fb993eccfafc0/FLAGfb65d051e [2018-10-27 05:43:48,968 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:43:48,968 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_094c7106-8b5a-4b35-855c-e68e7c144d8f/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4_true-termination_true-no-overflow.c [2018-10-27 05:43:48,976 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_094c7106-8b5a-4b35-855c-e68e7c144d8f/bin-2019/uautomizer/data/3877b10e1/76250c6500864cf19b8fb993eccfafc0/FLAGfb65d051e [2018-10-27 05:43:48,985 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_094c7106-8b5a-4b35-855c-e68e7c144d8f/bin-2019/uautomizer/data/3877b10e1/76250c6500864cf19b8fb993eccfafc0 [2018-10-27 05:43:48,990 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:43:48,991 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:43:48,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:43:48,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:43:48,994 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:43:48,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:43:48" (1/1) ... [2018-10-27 05:43:48,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4087c74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:48, skipping insertion in model container [2018-10-27 05:43:48,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:43:48" (1/1) ... [2018-10-27 05:43:49,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:43:49,015 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:43:49,126 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:43:49,128 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:43:49,138 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:43:49,147 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:43:49,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:49 WrapperNode [2018-10-27 05:43:49,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:43:49,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:43:49,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:43:49,148 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:43:49,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:49" (1/1) ... [2018-10-27 05:43:49,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:49" (1/1) ... [2018-10-27 05:43:49,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:49" (1/1) ... [2018-10-27 05:43:49,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:49" (1/1) ... [2018-10-27 05:43:49,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:49" (1/1) ... [2018-10-27 05:43:49,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:49" (1/1) ... [2018-10-27 05:43:49,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:49" (1/1) ... [2018-10-27 05:43:49,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:43:49,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:43:49,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:43:49,173 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:43:49,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_094c7106-8b5a-4b35-855c-e68e7c144d8f/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 05:43:49,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:43:49,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:43:49,225 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:43:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-10-27 05:43:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:43:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:43:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:43:49,539 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:43:49,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:49 BoogieIcfgContainer [2018-10-27 05:43:49,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:43:49,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:43:49,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:43:49,544 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:43:49,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:43:48" (1/3) ... [2018-10-27 05:43:49,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e12bf47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:43:49, skipping insertion in model container [2018-10-27 05:43:49,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:49" (2/3) ... [2018-10-27 05:43:49,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e12bf47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:43:49, skipping insertion in model container [2018-10-27 05:43:49,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:49" (3/3) ... [2018-10-27 05:43:49,547 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi4_true-termination_true-no-overflow.c [2018-10-27 05:43:49,556 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:43:49,563 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-10-27 05:43:49,581 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-10-27 05:43:49,607 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 05:43:49,607 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:43:49,607 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:43:49,607 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:43:49,608 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:43:49,608 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:43:49,608 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:43:49,608 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:43:49,608 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:43:49,624 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-10-27 05:43:49,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 05:43:49,629 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:49,630 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:49,632 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:49,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:49,637 INFO L82 PathProgramCache]: Analyzing trace with hash 409964900, now seen corresponding path program 1 times [2018-10-27 05:43:49,639 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 05:43:49,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 05:43:49,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:49,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:49,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:49,882 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 05:43:49,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:49,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:43:49,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:43:49,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:43:49,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:43:49,900 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2018-10-27 05:43:50,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:50,041 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2018-10-27 05:43:50,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:43:50,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-10-27 05:43:50,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:50,048 INFO L225 Difference]: With dead ends: 36 [2018-10-27 05:43:50,049 INFO L226 Difference]: Without dead ends: 22 [2018-10-27 05:43:50,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 05:43:50,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-27 05:43:50,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 16. [2018-10-27 05:43:50,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-27 05:43:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-10-27 05:43:50,081 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2018-10-27 05:43:50,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:50,081 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-10-27 05:43:50,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:43:50,082 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-10-27 05:43:50,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 05:43:50,082 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:50,082 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:50,082 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:50,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:50,083 INFO L82 PathProgramCache]: Analyzing trace with hash 409965092, now seen corresponding path program 1 times [2018-10-27 05:43:50,083 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 05:43:50,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 05:43:50,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:50,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:50,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:50,135 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 05:43:50,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:50,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:43:50,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:43:50,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:43:50,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:43:50,137 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 4 states. [2018-10-27 05:43:50,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:50,277 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2018-10-27 05:43:50,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:43:50,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-10-27 05:43:50,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:50,278 INFO L225 Difference]: With dead ends: 22 [2018-10-27 05:43:50,278 INFO L226 Difference]: Without dead ends: 21 [2018-10-27 05:43:50,279 INFO L605 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 [2018-10-27 05:43:50,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-27 05:43:50,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2018-10-27 05:43:50,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-27 05:43:50,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-10-27 05:43:50,286 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 10 [2018-10-27 05:43:50,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:50,286 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-10-27 05:43:50,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:43:50,286 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-10-27 05:43:50,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-27 05:43:50,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:50,287 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:50,287 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:50,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:50,287 INFO L82 PathProgramCache]: Analyzing trace with hash -175989934, now seen corresponding path program 1 times [2018-10-27 05:43:50,287 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 05:43:50,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 05:43:50,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:50,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:50,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:50,354 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 05:43:50,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:50,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:43:50,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:43:50,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:43:50,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:50,356 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 3 states. [2018-10-27 05:43:50,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:50,428 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2018-10-27 05:43:50,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:43:50,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-10-27 05:43:50,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:50,429 INFO L225 Difference]: With dead ends: 22 [2018-10-27 05:43:50,429 INFO L226 Difference]: Without dead ends: 21 [2018-10-27 05:43:50,430 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 05:43:50,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-27 05:43:50,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2018-10-27 05:43:50,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-27 05:43:50,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-10-27 05:43:50,433 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2018-10-27 05:43:50,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:50,434 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-10-27 05:43:50,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:43:50,434 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-10-27 05:43:50,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-27 05:43:50,434 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:50,434 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:50,435 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:50,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:50,435 INFO L82 PathProgramCache]: Analyzing trace with hash -175983976, now seen corresponding path program 1 times [2018-10-27 05:43:50,435 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 05:43:50,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 05:43:50,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:50,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:50,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:50,482 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 05:43:50,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:50,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:43:50,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:43:50,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:43:50,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:50,483 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2018-10-27 05:43:50,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:50,532 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2018-10-27 05:43:50,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:43:50,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-10-27 05:43:50,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:50,538 INFO L225 Difference]: With dead ends: 34 [2018-10-27 05:43:50,538 INFO L226 Difference]: Without dead ends: 21 [2018-10-27 05:43:50,539 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 05:43:50,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-27 05:43:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-27 05:43:50,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-27 05:43:50,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-10-27 05:43:50,545 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 11 [2018-10-27 05:43:50,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:50,545 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-10-27 05:43:50,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:43:50,545 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-10-27 05:43:50,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-27 05:43:50,546 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:50,546 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:50,547 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:50,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:50,548 INFO L82 PathProgramCache]: Analyzing trace with hash 961216832, now seen corresponding path program 1 times [2018-10-27 05:43:50,548 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 05:43:50,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 05:43:50,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:50,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:50,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:50,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:50,631 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:43:50,631 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_094c7106-8b5a-4b35-855c-e68e7c144d8f/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 05:43:50,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:50,654 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:43:50,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:50,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:43:50,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2018-10-27 05:43:50,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 05:43:50,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 05:43:50,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 05:43:50,735 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 8 states. [2018-10-27 05:43:50,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:50,918 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-10-27 05:43:50,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 05:43:50,919 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-10-27 05:43:50,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:50,920 INFO L225 Difference]: With dead ends: 23 [2018-10-27 05:43:50,920 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 05:43:50,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:43:50,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 05:43:50,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 05:43:50,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 05:43:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 05:43:50,921 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-10-27 05:43:50,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:50,921 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 05:43:50,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 05:43:50,922 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 05:43:50,922 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 05:43:50,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-27 05:43:51,008 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-27 05:43:51,008 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-27 05:43:51,008 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-27 05:43:51,008 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-27 05:43:51,008 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-27 05:43:51,008 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-27 05:43:51,008 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 13 28) no Hoare annotation was computed. [2018-10-27 05:43:51,009 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2018-10-27 05:43:51,009 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-10-27 05:43:51,009 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-10-27 05:43:51,009 INFO L425 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-10-27 05:43:51,009 INFO L425 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-10-27 05:43:51,009 INFO L425 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-10-27 05:43:51,009 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 25) no Hoare annotation was computed. [2018-10-27 05:43:51,009 INFO L425 ceAbstractionStarter]: For program point L17(lines 17 26) no Hoare annotation was computed. [2018-10-27 05:43:51,009 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 26) no Hoare annotation was computed. [2018-10-27 05:43:51,010 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 13 28) no Hoare annotation was computed. [2018-10-27 05:43:51,010 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 13 28) the Hoare annotation is: true [2018-10-27 05:43:51,010 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-10-27 05:43:51,010 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2018-10-27 05:43:51,010 INFO L425 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2018-10-27 05:43:51,010 INFO L421 ceAbstractionStarter]: At program point L20-2(lines 19 25) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 2147483647)) (.cse1 (< 0 main_~m~0))) (or (and .cse0 .cse1 (<= main_~m~0 2147483647) (<= (+ main_~i~0 main_~m~0) 2147483647)) (and (<= main_~i~0 2147483647) .cse0 (<= main_~m~0 main_~i~0) .cse1))) [2018-10-27 05:43:51,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:43:51 BoogieIcfgContainer [2018-10-27 05:43:51,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:43:51,024 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 05:43:51,024 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 05:43:51,024 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 05:43:51,025 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:49" (3/4) ... [2018-10-27 05:43:51,029 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-27 05:43:51,035 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-27 05:43:51,036 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-27 05:43:51,039 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-10-27 05:43:51,039 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-27 05:43:51,039 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-27 05:43:51,077 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_094c7106-8b5a-4b35-855c-e68e7c144d8f/bin-2019/uautomizer/witness.graphml [2018-10-27 05:43:51,077 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 05:43:51,078 INFO L168 Benchmark]: Toolchain (without parser) took 2087.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 190.8 MB). Free memory was 960.7 MB in the beginning and 1.1 GB in the end (delta: -132.6 MB). Peak memory consumption was 58.3 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:51,079 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:43:51,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.09 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 949.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:51,079 INFO L168 Benchmark]: Boogie Preprocessor took 24.56 ms. Allocated memory is still 1.0 GB. Free memory is still 949.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:43:51,080 INFO L168 Benchmark]: RCFGBuilder took 367.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 190.8 MB). Free memory was 949.8 MB in the beginning and 1.2 GB in the end (delta: -230.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:51,080 INFO L168 Benchmark]: TraceAbstraction took 1483.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 83.2 MB). Peak memory consumption was 83.2 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:51,080 INFO L168 Benchmark]: Witness Printer took 53.02 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:51,083 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 156.09 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 949.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.56 ms. Allocated memory is still 1.0 GB. Free memory is still 949.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 367.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 190.8 MB). Free memory was 949.8 MB in the beginning and 1.2 GB in the end (delta: -230.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1483.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 83.2 MB). Peak memory consumption was 83.2 MB. Max. memory is 11.5 GB. * Witness Printer took 53.02 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: 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: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: 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: 19]: Loop Invariant Derived loop invariant: (((n <= 2147483647 && 0 < m) && m <= 2147483647) && i + m <= 2147483647) || (((i <= 2147483647 && n <= 2147483647) && m <= i) && 0 < m) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 4 error locations. SAFE Result, 1.4s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 47 SDtfs, 72 SDslu, 53 SDs, 0 SdLazy, 86 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, 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, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 33 HoareAnnotationTreeSize, 5 FomulaSimplifications, 99 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 2422 SizeOfPredicates, 1 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...