./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 7408fe5ba42f5c474832c90e26f3e7ef2342554c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:21:45,452 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:21:45,454 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:21:45,466 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:21:45,466 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:21:45,467 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:21:45,468 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:21:45,470 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:21:45,473 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:21:45,477 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:21:45,478 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:21:45,479 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:21:45,481 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:21:45,482 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:21:45,483 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:21:45,488 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:21:45,489 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:21:45,494 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:21:45,496 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:21:45,498 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:21:45,499 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:21:45,500 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:21:45,502 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:21:45,503 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:21:45,503 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:21:45,504 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:21:45,505 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:21:45,506 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:21:45,507 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:21:45,508 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:21:45,508 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:21:45,509 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:21:45,509 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:21:45,509 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:21:45,510 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:21:45,511 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:21:45,511 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:21:45,526 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:21:45,526 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:21:45,527 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:21:45,527 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:21:45,528 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:21:45,528 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:21:45,528 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:21:45,529 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:21:45,529 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:21:45,529 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:21:45,529 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:21:45,529 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:21:45,530 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:21:45,530 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:21:45,530 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:21:45,530 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:21:45,530 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:21:45,530 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:21:45,531 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:21:45,531 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:21:45,531 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:21:45,531 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:21:45,531 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:21:45,532 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:21:45,532 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:21:45,532 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:21:45,532 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:21:45,532 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:21:45,532 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:21:45,533 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:21:45,533 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 7408fe5ba42f5c474832c90e26f3e7ef2342554c [2018-11-28 18:21:45,587 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:21:45,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:21:45,611 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:21:45,613 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:21:45,613 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:21:45,615 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i [2018-11-28 18:21:45,686 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da24edd6/17fab90216b64a6e8aa6897b8d29ca3a/FLAGf59a37239 [2018-11-28 18:21:46,166 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:21:46,169 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i [2018-11-28 18:21:46,175 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da24edd6/17fab90216b64a6e8aa6897b8d29ca3a/FLAGf59a37239 [2018-11-28 18:21:46,505 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da24edd6/17fab90216b64a6e8aa6897b8d29ca3a [2018-11-28 18:21:46,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:21:46,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:21:46,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:21:46,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:21:46,520 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:21:46,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:21:46" (1/1) ... [2018-11-28 18:21:46,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e68a996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:46, skipping insertion in model container [2018-11-28 18:21:46,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:21:46" (1/1) ... [2018-11-28 18:21:46,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:21:46,553 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:21:46,748 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:21:46,757 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:21:46,778 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:21:46,796 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:21:46,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:46 WrapperNode [2018-11-28 18:21:46,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:21:46,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:21:46,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:21:46,798 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:21:46,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:46" (1/1) ... [2018-11-28 18:21:46,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:46" (1/1) ... [2018-11-28 18:21:46,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:21:46,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:21:46,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:21:46,822 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:21:46,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:46" (1/1) ... [2018-11-28 18:21:46,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:46" (1/1) ... [2018-11-28 18:21:46,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:46" (1/1) ... [2018-11-28 18:21:46,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:46" (1/1) ... [2018-11-28 18:21:46,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:46" (1/1) ... [2018-11-28 18:21:46,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:46" (1/1) ... [2018-11-28 18:21:46,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:46" (1/1) ... [2018-11-28 18:21:46,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:21:46,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:21:46,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:21:46,852 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:21:46,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 18:21:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:21:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:21:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:21:46,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:21:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:21:46,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:21:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 18:21:46,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 18:21:47,244 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:21:47,245 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-28 18:21:47,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:21:47 BoogieIcfgContainer [2018-11-28 18:21:47,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:21:47,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:21:47,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:21:47,251 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:21:47,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:21:46" (1/3) ... [2018-11-28 18:21:47,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ced825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:21:47, skipping insertion in model container [2018-11-28 18:21:47,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:46" (2/3) ... [2018-11-28 18:21:47,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ced825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:21:47, skipping insertion in model container [2018-11-28 18:21:47,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:21:47" (3/3) ... [2018-11-28 18:21:47,257 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005b_true-unreach-call_true-termination.c.i [2018-11-28 18:21:47,269 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:21:47,279 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:21:47,301 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:21:47,336 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:21:47,337 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:21:47,337 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:21:47,337 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:21:47,337 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:21:47,337 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:21:47,337 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:21:47,338 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:21:47,339 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:21:47,360 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-28 18:21:47,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 18:21:47,367 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:21:47,368 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:21:47,371 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:21:47,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:21:47,378 INFO L82 PathProgramCache]: Analyzing trace with hash 728031169, now seen corresponding path program 1 times [2018-11-28 18:21:47,380 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:21:47,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:21:47,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:47,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:21:47,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:21:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:21:47,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:21:47,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:21:47,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:21:47,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:21:47,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:21:47,515 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-11-28 18:21:47,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:21:47,541 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2018-11-28 18:21:47,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:21:47,542 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-28 18:21:47,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:21:47,552 INFO L225 Difference]: With dead ends: 37 [2018-11-28 18:21:47,552 INFO L226 Difference]: Without dead ends: 14 [2018-11-28 18:21:47,556 INFO L631 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 [2018-11-28 18:21:47,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-28 18:21:47,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-28 18:21:47,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-28 18:21:47,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-11-28 18:21:47,598 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2018-11-28 18:21:47,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:21:47,599 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-11-28 18:21:47,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:21:47,600 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-11-28 18:21:47,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 18:21:47,600 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:21:47,601 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:21:47,601 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:21:47,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:21:47,602 INFO L82 PathProgramCache]: Analyzing trace with hash 701249060, now seen corresponding path program 1 times [2018-11-28 18:21:47,603 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:21:47,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:21:47,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:47,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:21:47,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:21:47,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:21:47,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:21:47,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 18:21:47,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 18:21:47,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 18:21:47,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:21:47,674 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2018-11-28 18:21:47,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:21:47,712 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-11-28 18:21:47,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 18:21:47,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 18:21:47,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:21:47,714 INFO L225 Difference]: With dead ends: 20 [2018-11-28 18:21:47,714 INFO L226 Difference]: Without dead ends: 15 [2018-11-28 18:21:47,715 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:21:47,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-28 18:21:47,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-28 18:21:47,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-28 18:21:47,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2018-11-28 18:21:47,720 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2018-11-28 18:21:47,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:21:47,720 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2018-11-28 18:21:47,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 18:21:47,721 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2018-11-28 18:21:47,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 18:21:47,721 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:21:47,722 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:21:47,722 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:21:47,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:21:47,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1130211510, now seen corresponding path program 1 times [2018-11-28 18:21:47,723 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:21:47,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:21:47,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:47,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:21:47,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:21:47,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:21:47,789 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:21:47,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 18:21:47,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 18:21:47,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 18:21:47,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:21:47,790 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2018-11-28 18:21:47,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:21:47,813 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2018-11-28 18:21:47,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 18:21:47,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-28 18:21:47,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:21:47,814 INFO L225 Difference]: With dead ends: 25 [2018-11-28 18:21:47,814 INFO L226 Difference]: Without dead ends: 16 [2018-11-28 18:21:47,815 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:21:47,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-28 18:21:47,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-28 18:21:47,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-28 18:21:47,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-11-28 18:21:47,820 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 14 [2018-11-28 18:21:47,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:21:47,820 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-11-28 18:21:47,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 18:21:47,821 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-11-28 18:21:47,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-28 18:21:47,821 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:21:47,822 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:21:47,822 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:21:47,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:21:47,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1842576314, now seen corresponding path program 1 times [2018-11-28 18:21:47,822 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:21:47,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:21:47,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:47,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:21:47,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:21:47,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 18:21:47,880 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:21:47,880 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 18:21:47,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:21:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:21:47,924 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:21:47,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 18:21:47,980 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:21:47,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-28 18:21:47,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:21:47,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:21:47,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:21:47,982 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2018-11-28 18:21:48,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:21:48,104 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2018-11-28 18:21:48,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:21:48,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-11-28 18:21:48,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:21:48,106 INFO L225 Difference]: With dead ends: 25 [2018-11-28 18:21:48,107 INFO L226 Difference]: Without dead ends: 20 [2018-11-28 18:21:48,107 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:21:48,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-28 18:21:48,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-28 18:21:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-28 18:21:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2018-11-28 18:21:48,113 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 15 [2018-11-28 18:21:48,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:21:48,114 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2018-11-28 18:21:48,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:21:48,115 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2018-11-28 18:21:48,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 18:21:48,115 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:21:48,116 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:21:48,116 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:21:48,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:21:48,116 INFO L82 PathProgramCache]: Analyzing trace with hash -926542376, now seen corresponding path program 2 times [2018-11-28 18:21:48,117 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:21:48,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:21:48,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:48,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:21:48,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:21:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:21:48,367 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:21:48,368 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 18:21:48,382 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 18:21:48,420 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 18:21:48,420 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 18:21:48,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:21:48,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:21:48,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:21:48,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-11-28 18:21:48,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 18:21:48,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 18:21:48,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:21:48,636 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 7 states. [2018-11-28 18:21:48,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:21:48,919 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2018-11-28 18:21:48,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:21:48,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-28 18:21:48,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:21:48,920 INFO L225 Difference]: With dead ends: 33 [2018-11-28 18:21:48,920 INFO L226 Difference]: Without dead ends: 21 [2018-11-28 18:21:48,922 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-11-28 18:21:48,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-28 18:21:48,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-28 18:21:48,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-28 18:21:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2018-11-28 18:21:48,927 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 19 [2018-11-28 18:21:48,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:21:48,928 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2018-11-28 18:21:48,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 18:21:48,928 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2018-11-28 18:21:48,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 18:21:48,929 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:21:48,929 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:21:48,929 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:21:48,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:21:48,930 INFO L82 PathProgramCache]: Analyzing trace with hash 901903432, now seen corresponding path program 3 times [2018-11-28 18:21:48,930 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:21:48,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:21:48,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:48,931 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 18:21:48,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:21:49,017 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-28 18:21:49,018 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:21:49,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 18:21:49,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:21:49,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:21:49,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:21:49,020 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2018-11-28 18:21:49,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:21:49,058 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2018-11-28 18:21:49,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:21:49,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-11-28 18:21:49,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:21:49,060 INFO L225 Difference]: With dead ends: 30 [2018-11-28 18:21:49,060 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:21:49,061 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:21:49,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:21:49,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:21:49,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:21:49,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:21:49,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-11-28 18:21:49,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:21:49,064 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:21:49,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:21:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:21:49,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:21:49,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:21:49,191 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 18:21:49,192 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:21:49,192 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:21:49,192 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 18:21:49,192 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:21:49,192 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:21:49,192 INFO L448 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-28 18:21:49,192 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 27) no Hoare annotation was computed. [2018-11-28 18:21:49,195 INFO L444 ceAbstractionStarter]: At program point L21-2(lines 21 23) the Hoare annotation is: (= main_~k~0 4) [2018-11-28 18:21:49,195 INFO L444 ceAbstractionStarter]: At program point L21-3(lines 15 24) the Hoare annotation is: (or (= main_~k~0 4) (and (<= (+ main_~j~0 100) main_~i~0) (<= main_~i~0 0))) [2018-11-28 18:21:49,195 INFO L444 ceAbstractionStarter]: At program point L17-2(lines 17 19) the Hoare annotation is: (or (= main_~k~0 4) (<= main_~i~0 1)) [2018-11-28 18:21:49,195 INFO L448 ceAbstractionStarter]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2018-11-28 18:21:49,195 INFO L444 ceAbstractionStarter]: At program point L15-2(lines 15 24) the Hoare annotation is: (= main_~k~0 4) [2018-11-28 18:21:49,196 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 27) no Hoare annotation was computed. [2018-11-28 18:21:49,196 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 27) the Hoare annotation is: true [2018-11-28 18:21:49,196 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-28 18:21:49,196 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-28 18:21:49,196 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-28 18:21:49,196 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-28 18:21:49,196 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-28 18:21:49,197 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-28 18:21:49,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:21:49 BoogieIcfgContainer [2018-11-28 18:21:49,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:21:49,214 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:21:49,215 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:21:49,215 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:21:49,215 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:21:47" (3/4) ... [2018-11-28 18:21:49,220 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:21:49,227 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:21:49,227 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:21:49,227 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-28 18:21:49,232 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-28 18:21:49,232 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-28 18:21:49,233 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:21:49,287 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:21:49,287 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:21:49,288 INFO L168 Benchmark]: Toolchain (without parser) took 2778.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 946.0 MB in the beginning and 1.0 GB in the end (delta: -84.2 MB). Peak memory consumption was 46.9 MB. Max. memory is 11.5 GB. [2018-11-28 18:21:49,291 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:21:49,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.40 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:21:49,292 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.60 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:21:49,293 INFO L168 Benchmark]: Boogie Preprocessor took 29.22 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:21:49,294 INFO L168 Benchmark]: RCFGBuilder took 394.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -173.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-11-28 18:21:49,295 INFO L168 Benchmark]: TraceAbstraction took 1967.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 71.7 MB). Peak memory consumption was 71.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:21:49,296 INFO L168 Benchmark]: Witness Printer took 73.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:21:49,301 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 284.40 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.60 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.22 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 394.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -173.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1967.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 71.7 MB). Peak memory consumption was 71.7 MB. Max. memory is 11.5 GB. * Witness Printer took 73.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 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: 15]: Loop Invariant Derived loop invariant: k == 4 || (j + 100 <= i && i <= 0) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: k == 4 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: k == 4 || i <= 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 96 SDtfs, 5 SDslu, 135 SDs, 0 SdLazy, 35 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 15 PreInvPairs, 25 NumberOfFragments, 31 HoareAnnotationTreeSize, 15 FomulaSimplifications, 44 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 2956 SizeOfPredicates, 3 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 27/32 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...