./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-lit/afnp2014_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8865addd-e4be-4b91-ad81-6f5819981cd2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8865addd-e4be-4b91-ad81-6f5819981cd2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8865addd-e4be-4b91-ad81-6f5819981cd2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8865addd-e4be-4b91-ad81-6f5819981cd2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/afnp2014_true-unreach-call_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_8865addd-e4be-4b91-ad81-6f5819981cd2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8865addd-e4be-4b91-ad81-6f5819981cd2/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d51c6cc706e0ce829ba547908cd819c55d1b3081 ............................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 03:47:49,507 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 03:47:49,509 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 03:47:49,517 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 03:47:49,517 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 03:47:49,517 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 03:47:49,518 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 03:47:49,519 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 03:47:49,520 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 03:47:49,520 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 03:47:49,521 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 03:47:49,521 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 03:47:49,521 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 03:47:49,522 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 03:47:49,523 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 03:47:49,523 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 03:47:49,524 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 03:47:49,525 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 03:47:49,526 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 03:47:49,527 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 03:47:49,528 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 03:47:49,529 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 03:47:49,531 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 03:47:49,531 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 03:47:49,531 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 03:47:49,532 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 03:47:49,532 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 03:47:49,533 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 03:47:49,533 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 03:47:49,534 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 03:47:49,534 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 03:47:49,535 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 03:47:49,535 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 03:47:49,535 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 03:47:49,535 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 03:47:49,536 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 03:47:49,536 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8865addd-e4be-4b91-ad81-6f5819981cd2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 03:47:49,543 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 03:47:49,543 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 03:47:49,543 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 03:47:49,543 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 03:47:49,544 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 03:47:49,544 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 03:47:49,544 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 03:47:49,544 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 03:47:49,544 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 03:47:49,545 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 03:47:49,545 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 03:47:49,545 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 03:47:49,545 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 03:47:49,545 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 03:47:49,545 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 03:47:49,545 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 03:47:49,545 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 03:47:49,546 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 03:47:49,546 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 03:47:49,546 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 03:47:49,546 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 03:47:49,546 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 03:47:49,546 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 03:47:49,546 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 03:47:49,547 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 03:47:49,547 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 03:47:49,547 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 03:47:49,547 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 03:47:49,547 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 03:47:49,547 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_8865addd-e4be-4b91-ad81-6f5819981cd2/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 ! call(__VERIFIER_error())) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d51c6cc706e0ce829ba547908cd819c55d1b3081 [2018-11-10 03:47:49,571 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 03:47:49,581 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 03:47:49,583 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 03:47:49,584 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 03:47:49,584 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 03:47:49,585 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8865addd-e4be-4b91-ad81-6f5819981cd2/bin-2019/uautomizer/../../sv-benchmarks/c/loop-lit/afnp2014_true-unreach-call_true-termination.c.i [2018-11-10 03:47:49,631 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8865addd-e4be-4b91-ad81-6f5819981cd2/bin-2019/uautomizer/data/f69b77dd7/c0755edd0a3d4248be1457ca9b422a9a/FLAG7512d88b1 [2018-11-10 03:47:50,021 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 03:47:50,021 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8865addd-e4be-4b91-ad81-6f5819981cd2/sv-benchmarks/c/loop-lit/afnp2014_true-unreach-call_true-termination.c.i [2018-11-10 03:47:50,025 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8865addd-e4be-4b91-ad81-6f5819981cd2/bin-2019/uautomizer/data/f69b77dd7/c0755edd0a3d4248be1457ca9b422a9a/FLAG7512d88b1 [2018-11-10 03:47:50,034 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8865addd-e4be-4b91-ad81-6f5819981cd2/bin-2019/uautomizer/data/f69b77dd7/c0755edd0a3d4248be1457ca9b422a9a [2018-11-10 03:47:50,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 03:47:50,038 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 03:47:50,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 03:47:50,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 03:47:50,041 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 03:47:50,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:47:50" (1/1) ... [2018-11-10 03:47:50,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332681e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:47:50, skipping insertion in model container [2018-11-10 03:47:50,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:47:50" (1/1) ... [2018-11-10 03:47:50,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 03:47:50,061 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 03:47:50,153 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:47:50,155 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 03:47:50,163 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:47:50,171 INFO L193 MainTranslator]: Completed translation [2018-11-10 03:47:50,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:47:50 WrapperNode [2018-11-10 03:47:50,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 03:47:50,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 03:47:50,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 03:47:50,172 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 03:47:50,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:47:50" (1/1) ... [2018-11-10 03:47:50,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:47:50" (1/1) ... [2018-11-10 03:47:50,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:47:50" (1/1) ... [2018-11-10 03:47:50,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:47:50" (1/1) ... [2018-11-10 03:47:50,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:47:50" (1/1) ... [2018-11-10 03:47:50,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:47:50" (1/1) ... [2018-11-10 03:47:50,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:47:50" (1/1) ... [2018-11-10 03:47:50,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 03:47:50,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 03:47:50,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 03:47:50,191 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 03:47:50,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:47:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8865addd-e4be-4b91-ad81-6f5819981cd2/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 03:47:50,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 03:47:50,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 03:47:50,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 03:47:50,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 03:47:50,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 03:47:50,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-10 03:47:50,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 03:47:50,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 03:47:50,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 03:47:50,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 03:47:50,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 03:47:50,387 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 03:47:50,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:47:50 BoogieIcfgContainer [2018-11-10 03:47:50,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 03:47:50,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 03:47:50,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 03:47:50,390 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 03:47:50,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:47:50" (1/3) ... [2018-11-10 03:47:50,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252314b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:47:50, skipping insertion in model container [2018-11-10 03:47:50,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:47:50" (2/3) ... [2018-11-10 03:47:50,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252314b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:47:50, skipping insertion in model container [2018-11-10 03:47:50,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:47:50" (3/3) ... [2018-11-10 03:47:50,392 INFO L112 eAbstractionObserver]: Analyzing ICFG afnp2014_true-unreach-call_true-termination.c.i [2018-11-10 03:47:50,397 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 03:47:50,403 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 03:47:50,416 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 03:47:50,435 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 03:47:50,436 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 03:47:50,436 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 03:47:50,436 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 03:47:50,436 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 03:47:50,436 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 03:47:50,436 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 03:47:50,436 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 03:47:50,436 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 03:47:50,451 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-10 03:47:50,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 03:47:50,455 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:47:50,456 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:47:50,458 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:47:50,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:47:50,463 INFO L82 PathProgramCache]: Analyzing trace with hash -2008095039, now seen corresponding path program 1 times [2018-11-10 03:47:50,464 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:47:50,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:47:50,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:47:50,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:47:50,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:47:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:47:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:47:50,546 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:47:50,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 03:47:50,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 03:47:50,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 03:47:50,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 03:47:50,558 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-11-10 03:47:50,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:47:50,575 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-10 03:47:50,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 03:47:50,577 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-10 03:47:50,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:47:50,584 INFO L225 Difference]: With dead ends: 33 [2018-11-10 03:47:50,584 INFO L226 Difference]: Without dead ends: 14 [2018-11-10 03:47:50,587 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 [2018-11-10 03:47:50,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-10 03:47:50,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-10 03:47:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-10 03:47:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-11-10 03:47:50,611 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2018-11-10 03:47:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:47:50,612 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-11-10 03:47:50,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 03:47:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-11-10 03:47:50,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-10 03:47:50,612 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:47:50,612 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:47:50,613 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:47:50,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:47:50,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1404763780, now seen corresponding path program 1 times [2018-11-10 03:47:50,613 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:47:50,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:47:50,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:47:50,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:47:50,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:47:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:47:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:47:50,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:47:50,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 03:47:50,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 03:47:50,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 03:47:50,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 03:47:50,673 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2018-11-10 03:47:50,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:47:50,722 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-10 03:47:50,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 03:47:50,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-10 03:47:50,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:47:50,723 INFO L225 Difference]: With dead ends: 23 [2018-11-10 03:47:50,723 INFO L226 Difference]: Without dead ends: 18 [2018-11-10 03:47:50,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 03:47:50,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-10 03:47:50,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-10 03:47:50,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-10 03:47:50,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-11-10 03:47:50,727 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2018-11-10 03:47:50,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:47:50,727 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-11-10 03:47:50,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 03:47:50,727 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-11-10 03:47:50,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 03:47:50,728 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:47:50,728 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:47:50,728 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:47:50,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:47:50,729 INFO L82 PathProgramCache]: Analyzing trace with hash 108470830, now seen corresponding path program 1 times [2018-11-10 03:47:50,729 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:47:50,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:47:50,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:47:50,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:47:50,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:47:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:47:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:47:50,776 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:47:50,776 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8865addd-e4be-4b91-ad81-6f5819981cd2/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:47:50,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:47:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:47:50,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:47:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:47:50,855 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:47:50,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-10 03:47:50,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 03:47:50,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 03:47:50,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-10 03:47:50,856 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 6 states. [2018-11-10 03:47:50,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:47:50,913 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-11-10 03:47:50,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 03:47:50,914 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-11-10 03:47:50,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:47:50,914 INFO L225 Difference]: With dead ends: 27 [2018-11-10 03:47:50,915 INFO L226 Difference]: Without dead ends: 22 [2018-11-10 03:47:50,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-10 03:47:50,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-10 03:47:50,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-10 03:47:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-10 03:47:50,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-11-10 03:47:50,918 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2018-11-10 03:47:50,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:47:50,919 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-11-10 03:47:50,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 03:47:50,919 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2018-11-10 03:47:50,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 03:47:50,919 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:47:50,920 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:47:50,921 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:47:50,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:47:50,921 INFO L82 PathProgramCache]: Analyzing trace with hash -238722856, now seen corresponding path program 2 times [2018-11-10 03:47:50,921 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:47:50,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:47:50,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:47:50,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:47:50,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:47:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:47:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:47:50,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:47:50,980 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8865addd-e4be-4b91-ad81-6f5819981cd2/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:47:50,994 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 03:47:51,008 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 03:47:51,008 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:47:51,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:47:51,054 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:47:51,073 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:47:51,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-10 03:47:51,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 03:47:51,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 03:47:51,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-10 03:47:51,074 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 8 states. [2018-11-10 03:47:51,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:47:51,094 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2018-11-10 03:47:51,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 03:47:51,094 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-11-10 03:47:51,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:47:51,094 INFO L225 Difference]: With dead ends: 22 [2018-11-10 03:47:51,095 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 03:47:51,095 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-10 03:47:51,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 03:47:51,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 03:47:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 03:47:51,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 03:47:51,096 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-11-10 03:47:51,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:47:51,096 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 03:47:51,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 03:47:51,096 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 03:47:51,096 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 03:47:51,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 03:47:51,123 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 03:47:51,123 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 03:47:51,123 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 03:47:51,123 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 03:47:51,123 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 03:47:51,123 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 03:47:51,123 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 19) the Hoare annotation is: true [2018-11-10 03:47:51,123 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 19) no Hoare annotation was computed. [2018-11-10 03:47:51,124 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-11-10 03:47:51,124 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 19) no Hoare annotation was computed. [2018-11-10 03:47:51,124 INFO L425 ceAbstractionStarter]: For program point L13-1(lines 13 16) no Hoare annotation was computed. [2018-11-10 03:47:51,124 INFO L425 ceAbstractionStarter]: For program point L13-2(line 13) no Hoare annotation was computed. [2018-11-10 03:47:51,124 INFO L425 ceAbstractionStarter]: For program point L13-4(lines 13 16) no Hoare annotation was computed. [2018-11-10 03:47:51,124 INFO L421 ceAbstractionStarter]: At program point L13-6(lines 13 16) the Hoare annotation is: (and (<= main_~y~0 main_~x~0) (<= 0 main_~y~0) (<= 1 main_~x~0)) [2018-11-10 03:47:51,124 INFO L421 ceAbstractionStarter]: At program point L13-7(lines 13 16) the Hoare annotation is: (<= main_~y~0 main_~x~0) [2018-11-10 03:47:51,124 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-10 03:47:51,124 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-10 03:47:51,125 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-10 03:47:51,125 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-10 03:47:51,125 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-10 03:47:51,125 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-10 03:47:51,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 03:47:51 BoogieIcfgContainer [2018-11-10 03:47:51,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 03:47:51,134 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 03:47:51,134 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 03:47:51,134 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 03:47:51,134 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:47:50" (3/4) ... [2018-11-10 03:47:51,136 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 03:47:51,141 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 03:47:51,141 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 03:47:51,141 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 03:47:51,143 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-10 03:47:51,144 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 03:47:51,144 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 03:47:51,172 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8865addd-e4be-4b91-ad81-6f5819981cd2/bin-2019/uautomizer/witness.graphml [2018-11-10 03:47:51,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 03:47:51,173 INFO L168 Benchmark]: Toolchain (without parser) took 1136.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -90.8 MB). Peak memory consumption was 61.8 MB. Max. memory is 11.5 GB. [2018-11-10 03:47:51,174 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:47:51,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 133.22 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 948.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2018-11-10 03:47:51,175 INFO L168 Benchmark]: Boogie Preprocessor took 18.72 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:47:51,175 INFO L168 Benchmark]: RCFGBuilder took 196.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 948.4 MB in the beginning and 1.1 GB in the end (delta: -190.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-11-10 03:47:51,175 INFO L168 Benchmark]: TraceAbstraction took 745.36 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: 84.3 MB). Peak memory consumption was 84.3 MB. Max. memory is 11.5 GB. [2018-11-10 03:47:51,176 INFO L168 Benchmark]: Witness Printer took 39.21 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. [2018-11-10 03:47:51,178 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 133.22 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 948.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.72 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 196.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 948.4 MB in the beginning and 1.1 GB in the end (delta: -190.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 745.36 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: 84.3 MB). Peak memory consumption was 84.3 MB. Max. memory is 11.5 GB. * Witness Printer took 39.21 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: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: (y <= x && 0 <= y) && 1 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 SDtfs, 10 SDslu, 116 SDs, 0 SdLazy, 42 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 18 HoareAnnotationTreeSize, 10 FomulaSimplifications, 26 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 4209 SizeOfPredicates, 4 NumberOfNonLiveVariables, 93 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/32 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...