./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ldv-regression/test09_true-unreach-call_true-termination.c --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/ldv-regression/test09_true-unreach-call_true-termination.c -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 424e992eac0acb5e0901287d22a3c0d4a0554aed ........................................................................................................................................................................................................................................................................................................................ 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 18:08:03,494 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:08:03,495 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:08:03,508 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:08:03,508 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:08:03,509 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:08:03,511 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:08:03,513 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:08:03,515 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:08:03,516 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:08:03,517 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:08:03,517 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:08:03,518 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:08:03,519 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:08:03,520 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:08:03,521 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:08:03,522 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:08:03,525 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:08:03,527 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:08:03,529 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:08:03,530 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:08:03,532 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:08:03,535 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:08:03,535 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:08:03,535 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:08:03,536 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:08:03,537 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:08:03,538 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:08:03,539 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:08:03,541 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:08:03,541 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:08:03,542 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:08:03,542 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:08:03,542 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:08:03,543 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:08:03,544 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:08:03,545 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:08:03,568 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:08:03,568 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:08:03,571 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:08:03,571 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:08:03,572 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:08:03,572 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:08:03,572 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:08:03,572 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:08:03,573 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:08:03,573 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:08:03,573 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:08:03,573 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:08:03,573 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:08:03,573 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:08:03,575 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:08:03,575 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:08:03,576 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:08:03,576 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:08:03,576 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:08:03,576 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:08:03,576 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:08:03,578 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:08:03,579 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:08:03,579 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:08:03,579 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:08:03,579 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:08:03,579 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:08:03,579 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:08:03,580 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:08:03,580 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:08:03,580 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 -> 424e992eac0acb5e0901287d22a3c0d4a0554aed [2018-11-28 18:08:03,624 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:08:03,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:08:03,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:08:03,642 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:08:03,643 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:08:03,643 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/test09_true-unreach-call_true-termination.c [2018-11-28 18:08:03,711 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d37b1b014/98fbc8f2fd184759b73381a35e7844ed/FLAGfa2002a82 [2018-11-28 18:08:04,214 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:08:04,215 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/test09_true-unreach-call_true-termination.c [2018-11-28 18:08:04,223 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d37b1b014/98fbc8f2fd184759b73381a35e7844ed/FLAGfa2002a82 [2018-11-28 18:08:04,546 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d37b1b014/98fbc8f2fd184759b73381a35e7844ed [2018-11-28 18:08:04,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:08:04,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:08:04,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:08:04,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:08:04,556 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:08:04,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:08:04" (1/1) ... [2018-11-28 18:08:04,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ebed1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:04, skipping insertion in model container [2018-11-28 18:08:04,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:08:04" (1/1) ... [2018-11-28 18:08:04,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:08:04,595 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:08:04,782 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:08:04,804 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:08:04,828 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:08:04,852 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:08:04,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:04 WrapperNode [2018-11-28 18:08:04,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:08:04,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:08:04,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:08:04,855 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:08:04,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:04" (1/1) ... [2018-11-28 18:08:04,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:04" (1/1) ... [2018-11-28 18:08:04,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:08:04,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:08:04,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:08:04,889 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:08:04,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:04" (1/1) ... [2018-11-28 18:08:04,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:04" (1/1) ... [2018-11-28 18:08:04,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:04" (1/1) ... [2018-11-28 18:08:04,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:04" (1/1) ... [2018-11-28 18:08:04,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:04" (1/1) ... [2018-11-28 18:08:04,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:04" (1/1) ... [2018-11-28 18:08:04,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:04" (1/1) ... [2018-11-28 18:08:04,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:08:04,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:08:04,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:08:04,930 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:08:04,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:04" (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 18:08:05,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 18:08:05,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:08:05,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:08:05,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:08:05,078 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-11-28 18:08:05,079 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-11-28 18:08:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:08:05,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:08:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:08:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:08:05,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:08:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-11-28 18:08:05,443 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:08:05,444 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 18:08:05,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:08:05 BoogieIcfgContainer [2018-11-28 18:08:05,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:08:05,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:08:05,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:08:05,449 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:08:05,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:08:04" (1/3) ... [2018-11-28 18:08:05,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394b1c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:08:05, skipping insertion in model container [2018-11-28 18:08:05,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:04" (2/3) ... [2018-11-28 18:08:05,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394b1c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:08:05, skipping insertion in model container [2018-11-28 18:08:05,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:08:05" (3/3) ... [2018-11-28 18:08:05,454 INFO L112 eAbstractionObserver]: Analyzing ICFG test09_true-unreach-call_true-termination.c [2018-11-28 18:08:05,467 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:08:05,478 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:08:05,498 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:08:05,540 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:08:05,543 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:08:05,543 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:08:05,543 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:08:05,543 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:08:05,543 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:08:05,543 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:08:05,544 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:08:05,544 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:08:05,583 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-28 18:08:05,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 18:08:05,590 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:08:05,591 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:08:05,593 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:08:05,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:08:05,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1889415219, now seen corresponding path program 1 times [2018-11-28 18:08:05,601 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:08:05,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:08:05,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:05,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:08:05,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:08:05,891 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 18:08:05,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:08:05,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:08:05,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:08:05,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:08:05,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:08:05,916 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2018-11-28 18:08:06,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:08:06,053 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-11-28 18:08:06,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:08:06,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-28 18:08:06,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:08:06,065 INFO L225 Difference]: With dead ends: 33 [2018-11-28 18:08:06,065 INFO L226 Difference]: Without dead ends: 15 [2018-11-28 18:08:06,069 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:08:06,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-28 18:08:06,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-28 18:08:06,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-28 18:08:06,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2018-11-28 18:08:06,109 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2018-11-28 18:08:06,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:08:06,109 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2018-11-28 18:08:06,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:08:06,110 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2018-11-28 18:08:06,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 18:08:06,110 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:08:06,111 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:08:06,112 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:08:06,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:08:06,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1918044370, now seen corresponding path program 1 times [2018-11-28 18:08:06,112 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:08:06,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:08:06,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:06,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:08:06,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:08:06,928 WARN L180 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2018-11-28 18:08:07,206 WARN L180 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2018-11-28 18:08:07,215 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 18:08:07,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:08:07,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 18:08:07,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 18:08:07,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 18:08:07,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:08:07,220 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 7 states. [2018-11-28 18:08:07,473 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2018-11-28 18:08:07,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:08:07,491 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2018-11-28 18:08:07,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:08:07,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-11-28 18:08:07,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:08:07,492 INFO L225 Difference]: With dead ends: 15 [2018-11-28 18:08:07,493 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:08:07,495 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:08:07,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:08:07,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:08:07,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:08:07,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:08:07,497 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-11-28 18:08:07,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:08:07,497 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:08:07,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 18:08:07,499 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:08:07,499 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:08:07,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:08:07,626 WARN L180 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-28 18:08:07,818 WARN L180 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2018-11-28 18:08:07,964 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:08:07,964 INFO L444 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) [2018-11-28 18:08:07,964 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:08:07,965 INFO L448 ceAbstractionStarter]: For program point L9(lines 9 14) no Hoare annotation was computed. [2018-11-28 18:08:07,965 INFO L448 ceAbstractionStarter]: For program point fEXIT(lines 7 15) no Hoare annotation was computed. [2018-11-28 18:08:07,965 INFO L444 ceAbstractionStarter]: At program point fENTRY(lines 7 15) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= 1 (select (select |#memory_int| ~p2~0.base) ~p2~0.offset))) (and (= ~p1~0.offset |old(~p1~0.offset)|) (= |~#a~0.base| ~p1~0.base)) (not (= |~#a~0.offset| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |~#a~0.base|))) [2018-11-28 18:08:07,965 INFO L448 ceAbstractionStarter]: For program point fFINAL(lines 7 15) no Hoare annotation was computed. [2018-11-28 18:08:07,965 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:08:07,966 INFO L444 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= ~p1~0.base ~p2~0.base) (not (= |~#b~0.base| |~#a~0.base|)) (= ~p1~0.offset ~p2~0.offset)) [2018-11-28 18:08:07,966 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:08:07,966 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:08:07,966 INFO L444 ceAbstractionStarter]: At program point L32(lines 17 39) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= |old(~p2~0.offset)| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |old(~p2~0.base)|))) [2018-11-28 18:08:07,966 INFO L448 ceAbstractionStarter]: For program point L31(lines 31 33) no Hoare annotation was computed. [2018-11-28 18:08:07,966 INFO L444 ceAbstractionStarter]: At program point mainENTRY(lines 17 39) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= |old(~p2~0.offset)| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |old(~p2~0.base)|)) (and (= ~p1~0.base ~p2~0.base) (= ~p1~0.offset ~p2~0.offset) (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|))) [2018-11-28 18:08:07,968 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 17 39) no Hoare annotation was computed. [2018-11-28 18:08:07,968 INFO L444 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= |old(~p2~0.offset)| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |old(~p2~0.base)|)) (and (= |~#a~0.offset| ~p1~0.offset) (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) 1) (= |~#a~0.base| ~p1~0.base))) [2018-11-28 18:08:07,968 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 37) no Hoare annotation was computed. [2018-11-28 18:08:07,968 INFO L448 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2018-11-28 18:08:07,969 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 17 39) no Hoare annotation was computed. [2018-11-28 18:08:07,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:08:07 BoogieIcfgContainer [2018-11-28 18:08:07,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:08:07,985 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:08:07,985 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:08:07,985 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:08:07,986 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:08:05" (3/4) ... [2018-11-28 18:08:07,990 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:08:07,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:08:07,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2018-11-28 18:08:07,998 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:08:08,004 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-11-28 18:08:08,004 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-28 18:08:08,005 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:08:08,032 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (a == b || !(\old(p2) == \old(p1))) || !(\old(p1) == \old(p2)) [2018-11-28 18:08:08,062 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:08:08,062 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:08:08,064 INFO L168 Benchmark]: Toolchain (without parser) took 3513.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 952.7 MB in the beginning and 1.0 GB in the end (delta: -47.4 MB). Peak memory consumption was 78.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:08,065 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:08:08,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.79 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:08,067 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.00 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:08:08,068 INFO L168 Benchmark]: Boogie Preprocessor took 40.92 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:08:08,069 INFO L168 Benchmark]: RCFGBuilder took 515.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -161.5 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:08,070 INFO L168 Benchmark]: TraceAbstraction took 2538.65 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: 103.4 MB). Peak memory consumption was 103.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:08,071 INFO L168 Benchmark]: Witness Printer took 77.53 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 18:08:08,075 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 300.79 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 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 33.00 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.92 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 515.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -161.5 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2538.65 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: 103.4 MB). Peak memory consumption was 103.4 MB. Max. memory is 11.5 GB. * Witness Printer took 77.53 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: 37]: 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: 17]: Loop Invariant Derived loop invariant: (a == b || !(\old(p2) == \old(p1))) || !(\old(p1) == \old(p2)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 10 SDslu, 33 SDs, 0 SdLazy, 22 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 109 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 25 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 3536 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...