/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-benchs/inv_square_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 40ef5092 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 ../../../trunk/examples/svcomp/float-benchs/inv_square_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 9b5f8c7f8f0f24b8f3c006680a1188ad2ebf7298 ........................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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 ../../../trunk/examples/svcomp/float-benchs/inv_square_true-unreach-call_true-termination.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 9b5f8c7f8f0f24b8f3c006680a1188ad2ebf7298 ...................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-40ef509 [2018-09-20 14:09:16,486 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 14:09:16,489 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 14:09:16,501 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 14:09:16,502 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 14:09:16,503 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 14:09:16,504 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 14:09:16,506 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 14:09:16,508 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 14:09:16,509 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 14:09:16,510 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 14:09:16,510 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 14:09:16,511 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 14:09:16,512 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 14:09:16,514 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 14:09:16,515 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 14:09:16,515 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 14:09:16,518 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 14:09:16,520 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 14:09:16,522 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 14:09:16,523 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 14:09:16,524 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 14:09:16,527 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 14:09:16,527 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 14:09:16,527 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 14:09:16,528 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 14:09:16,530 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 14:09:16,531 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 14:09:16,532 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 14:09:16,533 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 14:09:16,533 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 14:09:16,534 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 14:09:16,534 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 14:09:16,535 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 14:09:16,536 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 14:09:16,537 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 14:09:16,537 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 14:09:16,552 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 14:09:16,553 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 14:09:16,554 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 14:09:16,554 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 14:09:16,555 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 14:09:16,555 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 14:09:16,555 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 14:09:16,555 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 14:09:16,556 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 14:09:16,556 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 14:09:16,556 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 14:09:16,556 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 14:09:16,556 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 14:09:16,556 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 14:09:16,557 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 14:09:16,557 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 14:09:16,557 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 14:09:16,557 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 14:09:16,559 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 14:09:16,559 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 14:09:16,559 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 14:09:16,559 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 14:09:16,559 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 14:09:16,560 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 14:09:16,560 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 14:09:16,560 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 14:09:16,560 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 14:09:16,561 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 14:09:16,561 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 14:09:16,562 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 -> 9b5f8c7f8f0f24b8f3c006680a1188ad2ebf7298 [2018-09-20 14:09:16,611 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 14:09:16,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 14:09:16,628 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 14:09:16,630 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 14:09:16,630 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 14:09:16,631 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/inv_square_true-unreach-call_true-termination.c [2018-09-20 14:09:17,002 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d94ad502/6b26e462dcda40be8afda23ae14012e7/FLAGfd2024da2 [2018-09-20 14:09:17,179 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 14:09:17,185 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/inv_square_true-unreach-call_true-termination.c [2018-09-20 14:09:17,194 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d94ad502/6b26e462dcda40be8afda23ae14012e7/FLAGfd2024da2 [2018-09-20 14:09:17,214 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d94ad502/6b26e462dcda40be8afda23ae14012e7 [2018-09-20 14:09:17,221 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 14:09:17,226 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 14:09:17,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 14:09:17,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 14:09:17,240 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 14:09:17,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 02:09:17" (1/1) ... [2018-09-20 14:09:17,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac5afb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:17, skipping insertion in model container [2018-09-20 14:09:17,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 02:09:17" (1/1) ... [2018-09-20 14:09:17,259 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 14:09:17,514 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 14:09:17,532 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 14:09:17,537 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 14:09:17,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:17 WrapperNode [2018-09-20 14:09:17,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 14:09:17,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 14:09:17,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 14:09:17,553 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 14:09:17,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:17" (1/1) ... [2018-09-20 14:09:17,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:17" (1/1) ... [2018-09-20 14:09:17,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:17" (1/1) ... [2018-09-20 14:09:17,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:17" (1/1) ... [2018-09-20 14:09:17,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:17" (1/1) ... [2018-09-20 14:09:17,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:17" (1/1) ... [2018-09-20 14:09:17,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:17" (1/1) ... [2018-09-20 14:09:17,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 14:09:17,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 14:09:17,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 14:09:17,590 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 14:09:17,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:17" (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 [2018-09-20 14:09:17,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 14:09:17,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 14:09:17,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-20 14:09:17,649 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 14:09:17,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 14:09:17,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 14:09:17,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-09-20 14:09:17,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-20 14:09:17,650 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 14:09:17,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 14:09:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 14:09:17,883 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 14:09:17,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 02:09:17 BoogieIcfgContainer [2018-09-20 14:09:17,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 14:09:17,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 14:09:17,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 14:09:17,889 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 14:09:17,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 02:09:17" (1/3) ... [2018-09-20 14:09:17,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c917cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 02:09:17, skipping insertion in model container [2018-09-20 14:09:17,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:17" (2/3) ... [2018-09-20 14:09:17,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c917cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 02:09:17, skipping insertion in model container [2018-09-20 14:09:17,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 02:09:17" (3/3) ... [2018-09-20 14:09:17,893 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square_true-unreach-call_true-termination.c [2018-09-20 14:09:17,903 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 14:09:17,912 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 14:09:17,972 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 14:09:17,973 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 14:09:17,973 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 14:09:17,973 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 14:09:17,974 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 14:09:17,974 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 14:09:17,974 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 14:09:17,974 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 14:09:17,974 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 14:09:18,002 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-09-20 14:09:18,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-20 14:09:18,010 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 14:09:18,018 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 14:09:18,021 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 14:09:18,029 INFO L82 PathProgramCache]: Analyzing trace with hash 697060158, now seen corresponding path program 1 times [2018-09-20 14:09:18,032 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 14:09:18,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 14:09:18,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 14:09:18,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 14:09:18,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 14:09:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 14:09:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 14:09:18,185 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 14:09:18,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 02:09:18 BoogieIcfgContainer [2018-09-20 14:09:18,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 14:09:18,218 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 14:09:18,218 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 14:09:18,218 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 14:09:18,219 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 02:09:17" (3/4) ... [2018-09-20 14:09:18,224 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 14:09:18,225 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 14:09:18,225 INFO L168 Benchmark]: Toolchain (without parser) took 1002.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 14:09:18,231 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 14:09:18,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.64 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 14:09:18,237 INFO L168 Benchmark]: Boogie Preprocessor took 34.63 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 14:09:18,238 INFO L168 Benchmark]: RCFGBuilder took 296.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2018-09-20 14:09:18,239 INFO L168 Benchmark]: TraceAbstraction took 331.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2018-09-20 14:09:18,240 INFO L168 Benchmark]: Witness Printer took 6.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 14:09:18,248 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 323.64 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.63 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 296.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 331.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * Witness Printer took 6.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 18. Possible FailurePath: [L12] float x, y, z; [L14] x = __VERIFIER_nondet_float() [L17] COND TRUE x <= -1e-20f || x >= 1e-20f [L18] y = x * x VAL [x=2] [L19] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-40ef509 [2018-09-20 14:09:20,731 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 14:09:20,733 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 14:09:20,752 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 14:09:20,753 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 14:09:20,755 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 14:09:20,758 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 14:09:20,761 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 14:09:20,764 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 14:09:20,766 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 14:09:20,769 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 14:09:20,770 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 14:09:20,771 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 14:09:20,774 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 14:09:20,781 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 14:09:20,783 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 14:09:20,785 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 14:09:20,789 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 14:09:20,792 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 14:09:20,795 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 14:09:20,798 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 14:09:20,800 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 14:09:20,806 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 14:09:20,807 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 14:09:20,807 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 14:09:20,809 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 14:09:20,810 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 14:09:20,810 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 14:09:20,811 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 14:09:20,814 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 14:09:20,815 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 14:09:20,816 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 14:09:20,816 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 14:09:20,816 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 14:09:20,819 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 14:09:20,820 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 14:09:20,821 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 14:09:20,845 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 14:09:20,845 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 14:09:20,846 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 14:09:20,846 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 14:09:20,847 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 14:09:20,847 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 14:09:20,847 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 14:09:20,848 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 14:09:20,848 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 14:09:20,848 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 14:09:20,848 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 14:09:20,848 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 14:09:20,848 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 14:09:20,849 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 14:09:20,849 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 14:09:20,849 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 14:09:20,849 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 14:09:20,849 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 14:09:20,849 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 14:09:20,850 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 14:09:20,850 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 14:09:20,850 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 14:09:20,850 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 14:09:20,850 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 14:09:20,851 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 14:09:20,851 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 14:09:20,851 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 14:09:20,851 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 14:09:20,851 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 14:09:20,851 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 14:09:20,852 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 14:09:20,852 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 -> 9b5f8c7f8f0f24b8f3c006680a1188ad2ebf7298 [2018-09-20 14:09:20,918 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 14:09:20,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 14:09:20,948 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 14:09:20,950 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 14:09:20,950 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 14:09:20,951 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/inv_square_true-unreach-call_true-termination.c [2018-09-20 14:09:21,341 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64bcd50eb/9f787db583c74b87b8a7dd491df49226/FLAGf992169d3 [2018-09-20 14:09:21,529 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 14:09:21,530 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/inv_square_true-unreach-call_true-termination.c [2018-09-20 14:09:21,539 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64bcd50eb/9f787db583c74b87b8a7dd491df49226/FLAGf992169d3 [2018-09-20 14:09:21,565 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64bcd50eb/9f787db583c74b87b8a7dd491df49226 [2018-09-20 14:09:21,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 14:09:21,575 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 14:09:21,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 14:09:21,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 14:09:21,586 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 14:09:21,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 02:09:21" (1/1) ... [2018-09-20 14:09:21,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b0a3820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:21, skipping insertion in model container [2018-09-20 14:09:21,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 02:09:21" (1/1) ... [2018-09-20 14:09:21,604 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 14:09:21,856 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 14:09:21,884 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 14:09:21,892 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 14:09:21,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:21 WrapperNode [2018-09-20 14:09:21,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 14:09:21,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 14:09:21,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 14:09:21,921 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 14:09:21,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:21" (1/1) ... [2018-09-20 14:09:21,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:21" (1/1) ... [2018-09-20 14:09:21,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:21" (1/1) ... [2018-09-20 14:09:21,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:21" (1/1) ... [2018-09-20 14:09:21,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:21" (1/1) ... [2018-09-20 14:09:21,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:21" (1/1) ... [2018-09-20 14:09:21,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:21" (1/1) ... [2018-09-20 14:09:21,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 14:09:21,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 14:09:21,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 14:09:21,976 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 14:09:21,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:21" (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 [2018-09-20 14:09:22,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 14:09:22,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 14:09:22,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-20 14:09:22,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 14:09:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 14:09:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 14:09:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-09-20 14:09:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-20 14:09:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 14:09:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 14:09:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 14:09:23,238 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 14:09:23,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 02:09:23 BoogieIcfgContainer [2018-09-20 14:09:23,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 14:09:23,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 14:09:23,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 14:09:23,244 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 14:09:23,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 02:09:21" (1/3) ... [2018-09-20 14:09:23,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6380ae6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 02:09:23, skipping insertion in model container [2018-09-20 14:09:23,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 02:09:21" (2/3) ... [2018-09-20 14:09:23,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6380ae6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 02:09:23, skipping insertion in model container [2018-09-20 14:09:23,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 02:09:23" (3/3) ... [2018-09-20 14:09:23,250 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square_true-unreach-call_true-termination.c [2018-09-20 14:09:23,260 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 14:09:23,269 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 14:09:23,318 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 14:09:23,319 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 14:09:23,319 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 14:09:23,319 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 14:09:23,320 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 14:09:23,320 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 14:09:23,320 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 14:09:23,321 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 14:09:23,321 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 14:09:23,341 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-09-20 14:09:23,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-20 14:09:23,348 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 14:09:23,349 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 14:09:23,352 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 14:09:23,358 INFO L82 PathProgramCache]: Analyzing trace with hash 697060158, now seen corresponding path program 1 times [2018-09-20 14:09:23,363 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 14:09:23,364 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-20 14:09:23,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 14:09:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 14:09:23,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 14:09:38,812 WARN L178 SmtUtils]: Spent 10.45 s on a formula simplification that was a NOOP. DAG size: 25 [2018-09-20 14:09:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 14:09:46,936 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 14:09:46,952 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 14:09:46,952 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-20 14:09:46,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-20 14:09:46,969 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-20 14:09:46,970 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=19, Unknown=2, NotChecked=0, Total=30 [2018-09-20 14:09:46,975 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 6 states. [2018-09-20 14:10:07,485 WARN L178 SmtUtils]: Spent 14.17 s on a formula simplification that was a NOOP. DAG size: 26 [2018-09-20 14:10:20,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 14:10:20,417 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-09-20 14:10:20,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-20 14:10:20,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-09-20 14:10:20,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 14:10:20,501 INFO L225 Difference]: With dead ends: 30 [2018-09-20 14:10:20,501 INFO L226 Difference]: Without dead ends: 0 [2018-09-20 14:10:20,506 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 42.6s TimeCoverageRelationStatistics Valid=17, Invalid=37, Unknown=2, NotChecked=0, Total=56 [2018-09-20 14:10:20,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-20 14:10:20,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-20 14:10:20,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-20 14:10:20,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-20 14:10:20,531 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-09-20 14:10:20,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 14:10:20,532 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-20 14:10:20,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-20 14:10:20,532 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-20 14:10:20,532 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-20 14:10:20,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-20 14:10:36,606 WARN L178 SmtUtils]: Spent 15.96 s on a formula simplification that was a NOOP. DAG size: 26 [2018-09-20 14:10:36,609 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-20 14:10:36,610 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-20 14:10:36,610 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-20 14:10:36,610 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-20 14:10:36,610 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-20 14:10:36,610 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-20 14:10:36,610 INFO L426 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2018-09-20 14:10:36,610 INFO L426 ceAbstractionStarter]: For program point L17-2(lines 17 21) no Hoare annotation was computed. [2018-09-20 14:10:36,611 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2018-09-20 14:10:36,611 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 10 23) no Hoare annotation was computed. [2018-09-20 14:10:36,611 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2018-09-20 14:10:36,612 INFO L422 ceAbstractionStarter]: At program point L19(line 19) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) RNE 1.0))) (and (fp.leq main_~x~0 .cse0) (fp.geq main_~x~0 (fp.neg .cse0)) (or (exists ((v_prenex_1 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) RNE 1.0))) (and (= (fp.mul RNE v_prenex_1 v_prenex_1) main_~y~0) (fp.leq v_prenex_1 .cse1) (fp.geq v_prenex_1 (fp.neg .cse1)) (fp.leq v_prenex_1 (fp.neg ((_ to_fp 8 24) RNE (/ 1.0 100000000000000000000.0))))))) (exists ((main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) RNE 1.0))) (and (fp.leq main_~x~0 .cse2) (fp.geq main_~x~0 (fp.neg .cse2)) (fp.geq main_~x~0 ((_ to_fp 8 24) RNE (/ 1.0 100000000000000000000.0))) (= (fp.mul RNE main_~x~0 main_~x~0) main_~y~0))))))) [2018-09-20 14:10:36,612 INFO L426 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-09-20 14:10:36,612 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2018-09-20 14:10:36,612 INFO L429 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 8) the Hoare annotation is: true [2018-09-20 14:10:36,612 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 8) no Hoare annotation was computed. [2018-09-20 14:10:36,612 INFO L426 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2018-09-20 14:10:36,612 INFO L426 ceAbstractionStarter]: For program point L8-1(line 8) no Hoare annotation was computed. [2018-09-20 14:10:36,613 INFO L426 ceAbstractionStarter]: For program point L8-3(line 8) no Hoare annotation was computed. [2018-09-20 14:10:36,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 02:10:36 BoogieIcfgContainer [2018-09-20 14:10:36,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 14:10:36,620 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 14:10:36,620 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 14:10:36,620 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 14:10:36,621 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 02:09:23" (3/4) ... [2018-09-20 14:10:36,627 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-20 14:10:36,634 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-20 14:10:36,635 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-20 14:10:36,635 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-09-20 14:10:36,640 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-09-20 14:10:36,641 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-09-20 14:10:36,641 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-20 14:10:36,681 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 14:10:36,681 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 14:10:36,682 INFO L168 Benchmark]: Toolchain (without parser) took 75111.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -126.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-09-20 14:10:36,685 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 14:10:36,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.42 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 14:10:36,692 INFO L168 Benchmark]: Boogie Preprocessor took 55.08 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 14:10:36,693 INFO L168 Benchmark]: RCFGBuilder took 1263.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -181.4 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2018-09-20 14:10:36,695 INFO L168 Benchmark]: TraceAbstraction took 73377.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 11.5 GB. [2018-09-20 14:10:36,695 INFO L168 Benchmark]: Witness Printer took 61.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 14:10:36,703 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 344.42 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 55.08 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1263.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -181.4 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 73377.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 11.5 GB. * Witness Printer took 61.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 73.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 33.5s AutomataDifference, 0.0s DeadEndRemovalTime, 16.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11 SDtfs, 9 SDslu, 39 SDs, 0 SdLazy, 15 SolverSat, 2 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 12.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 42.6s 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 67 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 16.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 23.4s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 1 QuantifiedInterpolants, 693 SizeOfPredicates, 3 NumberOfNonLiveVariables, 21 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...