./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loop-acceleration/underapprox_true-unreach-call2_true-termination.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-acceleration/underapprox_true-unreach-call2_true-termination.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 2797de73b923a7fbf0f091cb97be1331c2699e2c ................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:20:06,795 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:20:06,797 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:20:06,813 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:20:06,814 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:20:06,815 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:20:06,816 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:20:06,819 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:20:06,821 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:20:06,822 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:20:06,830 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:20:06,830 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:20:06,831 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:20:06,832 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:20:06,836 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:20:06,838 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:20:06,838 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:20:06,842 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:20:06,848 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:20:06,849 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:20:06,851 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:20:06,853 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:20:06,856 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:20:06,857 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:20:06,857 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:20:06,858 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:20:06,861 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:20:06,861 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:20:06,864 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:20:06,867 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:20:06,867 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:20:06,868 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:20:06,868 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:20:06,868 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:20:06,869 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:20:06,871 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:20:06,874 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:20:06,898 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:20:06,899 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:20:06,899 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:20:06,900 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:20:06,901 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:20:06,901 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:20:06,901 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:20:06,901 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:20:06,901 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:20:06,902 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:20:06,902 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:20:06,902 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:20:06,902 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:20:06,902 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:20:06,902 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:20:06,902 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:20:06,904 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:20:06,904 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:20:06,904 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:20:06,904 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:20:06,905 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:20:06,905 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:20:06,905 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:20:06,905 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:20:06,905 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:20:06,905 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:20:06,906 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:20:06,907 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:20:06,907 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:20:06,907 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:20:06,907 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 -> 2797de73b923a7fbf0f091cb97be1331c2699e2c [2018-11-28 18:20:06,945 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:20:06,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:20:06,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:20:06,965 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:20:06,965 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:20:06,966 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-acceleration/underapprox_true-unreach-call2_true-termination.i [2018-11-28 18:20:07,022 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c344ecc3f/0b5965910b6340299f5ef0e280e761e9/FLAG534853536 [2018-11-28 18:20:07,422 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:20:07,423 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-acceleration/underapprox_true-unreach-call2_true-termination.i [2018-11-28 18:20:07,429 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c344ecc3f/0b5965910b6340299f5ef0e280e761e9/FLAG534853536 [2018-11-28 18:20:07,817 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c344ecc3f/0b5965910b6340299f5ef0e280e761e9 [2018-11-28 18:20:07,821 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:20:07,822 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:20:07,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:20:07,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:20:07,828 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:20:07,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:20:07" (1/1) ... [2018-11-28 18:20:07,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76370ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:07, skipping insertion in model container [2018-11-28 18:20:07,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:20:07" (1/1) ... [2018-11-28 18:20:07,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:20:07,865 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:20:08,109 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:20:08,115 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:20:08,134 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:20:08,151 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:20:08,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:08 WrapperNode [2018-11-28 18:20:08,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:20:08,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:20:08,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:20:08,152 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:20:08,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:08" (1/1) ... [2018-11-28 18:20:08,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:08" (1/1) ... [2018-11-28 18:20:08,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:20:08,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:20:08,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:20:08,181 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:20:08,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:08" (1/1) ... [2018-11-28 18:20:08,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:08" (1/1) ... [2018-11-28 18:20:08,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:08" (1/1) ... [2018-11-28 18:20:08,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:08" (1/1) ... [2018-11-28 18:20:08,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:08" (1/1) ... [2018-11-28 18:20:08,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:08" (1/1) ... [2018-11-28 18:20:08,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:08" (1/1) ... [2018-11-28 18:20:08,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:20:08,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:20:08,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:20:08,207 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:20:08,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:08" (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 18:20:08,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:20:08,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:20:08,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:20:08,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:20:08,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:20:08,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:20:08,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 18:20:08,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 18:20:08,522 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:20:08,522 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 18:20:08,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:20:08 BoogieIcfgContainer [2018-11-28 18:20:08,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:20:08,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:20:08,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:20:08,527 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:20:08,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:20:07" (1/3) ... [2018-11-28 18:20:08,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5509dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:20:08, skipping insertion in model container [2018-11-28 18:20:08,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:20:08" (2/3) ... [2018-11-28 18:20:08,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5509dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:20:08, skipping insertion in model container [2018-11-28 18:20:08,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:20:08" (3/3) ... [2018-11-28 18:20:08,530 INFO L112 eAbstractionObserver]: Analyzing ICFG underapprox_true-unreach-call2_true-termination.i [2018-11-28 18:20:08,541 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:20:08,548 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:20:08,567 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:20:08,601 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:20:08,602 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:20:08,602 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:20:08,602 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:20:08,603 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:20:08,603 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:20:08,603 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:20:08,603 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:20:08,604 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:20:08,624 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-28 18:20:08,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 18:20:08,629 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:20:08,630 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:20:08,633 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:20:08,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:20:08,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2018-11-28 18:20:08,641 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:20:08,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:20:08,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:20:08,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:20:08,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:20:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:20:08,991 WARN L180 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 5 [2018-11-28 18:20:09,007 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 18:20:09,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:20:09,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 18:20:09,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 18:20:09,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 18:20:09,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:20:09,032 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2018-11-28 18:20:09,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:20:09,070 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2018-11-28 18:20:09,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 18:20:09,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 18:20:09,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:20:09,079 INFO L225 Difference]: With dead ends: 29 [2018-11-28 18:20:09,079 INFO L226 Difference]: Without dead ends: 12 [2018-11-28 18:20:09,082 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:20:09,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-28 18:20:09,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-28 18:20:09,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-28 18:20:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-28 18:20:09,117 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-28 18:20:09,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:20:09,118 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-28 18:20:09,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 18:20:09,118 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-28 18:20:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 18:20:09,119 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:20:09,119 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:20:09,119 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:20:09,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:20:09,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2018-11-28 18:20:09,120 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:20:09,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:20:09,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:20:09,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:20:09,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:20:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:20:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:20:09,264 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:20:09,264 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 18:20:09,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:20:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:20:09,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:20:09,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:20:09,385 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:20:09,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-28 18:20:09,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:20:09,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:20:09,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:20:09,387 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2018-11-28 18:20:09,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:20:09,412 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-11-28 18:20:09,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:20:09,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-28 18:20:09,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:20:09,413 INFO L225 Difference]: With dead ends: 18 [2018-11-28 18:20:09,413 INFO L226 Difference]: Without dead ends: 13 [2018-11-28 18:20:09,415 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:20:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-28 18:20:09,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-28 18:20:09,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-28 18:20:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-28 18:20:09,420 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-11-28 18:20:09,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:20:09,420 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-28 18:20:09,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:20:09,421 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-28 18:20:09,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 18:20:09,422 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:20:09,422 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:20:09,422 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:20:09,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:20:09,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1490448798, now seen corresponding path program 2 times [2018-11-28 18:20:09,423 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:20:09,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:20:09,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:20:09,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:20:09,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:20:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:20:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:20:09,680 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:20:09,680 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 18:20:09,698 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 18:20:09,740 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 18:20:09,740 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 18:20:09,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:20:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:20:09,895 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:20:09,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-28 18:20:09,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 18:20:09,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 18:20:09,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:20:09,896 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2018-11-28 18:20:09,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:20:09,953 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-28 18:20:09,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:20:09,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-11-28 18:20:09,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:20:09,955 INFO L225 Difference]: With dead ends: 19 [2018-11-28 18:20:09,955 INFO L226 Difference]: Without dead ends: 14 [2018-11-28 18:20:09,956 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:20:09,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-28 18:20:09,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-28 18:20:09,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-28 18:20:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-28 18:20:09,959 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-11-28 18:20:09,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:20:09,960 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-28 18:20:09,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 18:20:09,960 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-28 18:20:09,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 18:20:09,961 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:20:09,961 INFO L402 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:20:09,961 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:20:09,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:20:09,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1004266255, now seen corresponding path program 3 times [2018-11-28 18:20:09,962 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:20:09,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:20:09,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:20:09,963 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 18:20:09,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:20:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:20:10,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:20:10,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:20:10,167 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:20:10,177 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 18:20:10,188 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-28 18:20:10,188 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 18:20:10,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:20:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:20:10,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 18:20:10,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-28 18:20:10,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 18:20:10,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 18:20:10,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-28 18:20:10,487 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2018-11-28 18:20:10,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:20:10,603 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2018-11-28 18:20:10,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 18:20:10,603 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2018-11-28 18:20:10,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:20:10,604 INFO L225 Difference]: With dead ends: 18 [2018-11-28 18:20:10,605 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:20:10,606 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:20:10,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:20:10,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:20:10,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:20:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:20:10,607 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-11-28 18:20:10,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:20:10,607 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:20:10,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 18:20:10,608 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:20:10,608 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:20:10,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:20:10,737 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 18:20:10,737 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:20:10,737 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:20:10,737 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 18:20:10,737 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:20:10,737 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:20:10,738 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 8 16) the Hoare annotation is: true [2018-11-28 18:20:10,738 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 8 16) no Hoare annotation was computed. [2018-11-28 18:20:10,738 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 8 16) no Hoare annotation was computed. [2018-11-28 18:20:10,738 INFO L444 ceAbstractionStarter]: At program point L11-2(lines 11 14) the Hoare annotation is: (or (and (<= main_~x~0 0) (<= 0 main_~x~0)) (< (mod (+ main_~x~0 4294967295) 4294967296) 6)) [2018-11-28 18:20:10,738 INFO L444 ceAbstractionStarter]: At program point L11-3(lines 11 14) the Hoare annotation is: (and (< (mod (+ main_~x~0 4294967295) 4294967296) 6) (<= 6 (mod main_~x~0 4294967296))) [2018-11-28 18:20:10,738 INFO L448 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-11-28 18:20:10,740 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-11-28 18:20:10,740 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-11-28 18:20:10,740 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-11-28 18:20:10,740 INFO L448 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-11-28 18:20:10,740 INFO L448 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-11-28 18:20:10,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:20:10 BoogieIcfgContainer [2018-11-28 18:20:10,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:20:10,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:20:10,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:20:10,753 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:20:10,753 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:20:08" (3/4) ... [2018-11-28 18:20:10,756 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:20:10,762 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:20:10,762 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:20:10,762 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-28 18:20:10,766 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-28 18:20:10,766 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-28 18:20:10,767 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:20:10,808 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:20:10,809 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:20:10,809 INFO L168 Benchmark]: Toolchain (without parser) took 2988.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 946.0 MB in the beginning and 1.0 GB in the end (delta: -76.7 MB). Peak memory consumption was 60.6 MB. Max. memory is 11.5 GB. [2018-11-28 18:20:10,813 INFO L168 Benchmark]: CDTParser took 0.17 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 18:20:10,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.03 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 18:20:10,818 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.10 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 18:20:10,819 INFO L168 Benchmark]: Boogie Preprocessor took 25.83 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 18:20:10,819 INFO L168 Benchmark]: RCFGBuilder took 316.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -187.4 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:20:10,820 INFO L168 Benchmark]: TraceAbstraction took 2228.30 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: 93.3 MB). Peak memory consumption was 93.3 MB. Max. memory is 11.5 GB. [2018-11-28 18:20:10,822 INFO L168 Benchmark]: Witness Printer took 56.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:20:10,833 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 328.03 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 28.10 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 25.83 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 316.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -187.4 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2228.30 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: 93.3 MB). Peak memory consumption was 93.3 MB. Max. memory is 11.5 GB. * Witness Printer took 56.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 11]: Loop Invariant Derived loop invariant: (x <= 0 && 0 <= x) || (x + 4294967295) % 4294967296 < 6 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. SAFE Result, 2.1s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 2 SDslu, 88 SDs, 0 SdLazy, 60 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 16 NumberOfFragments, 33 HoareAnnotationTreeSize, 11 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 82 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 2185 SizeOfPredicates, 2 NumberOfNonLiveVariables, 97 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 6/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...