./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/inv_square-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/float-benchs/inv_square-2.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: /usr/bin/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 ../sv-benchmarks/c/float-benchs/inv_square-2.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 0.1.25-f470102 [2019-11-28 16:41:27,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:41:27,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:41:27,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:41:27,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:41:27,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:41:27,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:41:27,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:41:27,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:41:27,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:41:27,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:41:27,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:41:27,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:41:27,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:41:27,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:41:27,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:41:27,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:41:27,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:41:27,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:41:27,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:41:27,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:41:27,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:41:27,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:41:27,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:41:27,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:41:27,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:41:27,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:41:27,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:41:27,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:41:27,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:41:27,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:41:27,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:41:27,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:41:27,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:41:27,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:41:27,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:41:27,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:41:27,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:41:27,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:41:27,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:41:27,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:41:27,556 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:41:27,576 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:41:27,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:41:27,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:41:27,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:41:27,581 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:41:27,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:41:27,582 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:41:27,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:41:27,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:41:27,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:41:27,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:41:27,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:41:27,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:41:27,585 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:41:27,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:41:27,586 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:41:27,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:41:27,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:41:27,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:41:27,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:41:27,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:41:27,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:41:27,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:41:27,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:41:27,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:41:27,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:41:27,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:41:27,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:41:27,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:41:27,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 [2019-11-28 16:41:27,881 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:41:27,902 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:41:27,906 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:41:27,907 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:41:27,908 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:41:27,909 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square-2.c [2019-11-28 16:41:27,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23fc5cfd3/e800a9cef0c240fda572c9db7ad18ef5/FLAG3662056ad [2019-11-28 16:41:28,470 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:41:28,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-2.c [2019-11-28 16:41:28,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23fc5cfd3/e800a9cef0c240fda572c9db7ad18ef5/FLAG3662056ad [2019-11-28 16:41:28,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23fc5cfd3/e800a9cef0c240fda572c9db7ad18ef5 [2019-11-28 16:41:28,849 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:41:28,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:41:28,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:41:28,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:41:28,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:41:28,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:41:28" (1/1) ... [2019-11-28 16:41:28,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164a7f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:28, skipping insertion in model container [2019-11-28 16:41:28,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:41:28" (1/1) ... [2019-11-28 16:41:28,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:41:28,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:41:29,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:41:29,062 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:41:29,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:41:29,100 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:41:29,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:29 WrapperNode [2019-11-28 16:41:29,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:41:29,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:41:29,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:41:29,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:41:29,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:29" (1/1) ... [2019-11-28 16:41:29,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:29" (1/1) ... [2019-11-28 16:41:29,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:41:29,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:41:29,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:41:29,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:41:29,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:29" (1/1) ... [2019-11-28 16:41:29,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:29" (1/1) ... [2019-11-28 16:41:29,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:29" (1/1) ... [2019-11-28 16:41:29,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:29" (1/1) ... [2019-11-28 16:41:29,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:29" (1/1) ... [2019-11-28 16:41:29,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:29" (1/1) ... [2019-11-28 16:41:29,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:29" (1/1) ... [2019-11-28 16:41:29,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:41:29,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:41:29,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:41:29,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:41:29,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:29" (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 [2019-11-28 16:41:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:41:29,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:41:29,429 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:41:29,429 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 16:41:29,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:29 BoogieIcfgContainer [2019-11-28 16:41:29,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:41:29,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:41:29,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:41:29,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:41:29,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:41:28" (1/3) ... [2019-11-28 16:41:29,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e358c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:41:29, skipping insertion in model container [2019-11-28 16:41:29,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:29" (2/3) ... [2019-11-28 16:41:29,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e358c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:41:29, skipping insertion in model container [2019-11-28 16:41:29,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:29" (3/3) ... [2019-11-28 16:41:29,438 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square-2.c [2019-11-28 16:41:29,446 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:41:29,452 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:41:29,462 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:41:29,485 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:41:29,486 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:41:29,486 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:41:29,486 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:41:29,486 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:41:29,486 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:41:29,487 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:41:29,487 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:41:29,499 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-28 16:41:29,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 16:41:29,504 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:41:29,505 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 16:41:29,505 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:41:29,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:41:29,510 INFO L82 PathProgramCache]: Analyzing trace with hash 957382, now seen corresponding path program 1 times [2019-11-28 16:41:29,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:41:29,517 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660339519] [2019-11-28 16:41:29,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:41:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:41:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:41:29,623 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:41:29,624 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:41:29,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:41:29 BoogieIcfgContainer [2019-11-28 16:41:29,640 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:41:29,641 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:41:29,641 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:41:29,641 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:41:29,642 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:29" (3/4) ... [2019-11-28 16:41:29,645 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:41:29,645 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:41:29,647 INFO L168 Benchmark]: Toolchain (without parser) took 795.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -143.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:41:29,648 INFO L168 Benchmark]: CDTParser took 0.85 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:41:29,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.76 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:29,651 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:29,651 INFO L168 Benchmark]: Boogie Preprocessor took 17.52 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. [2019-11-28 16:41:29,652 INFO L168 Benchmark]: RCFGBuilder took 204.56 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: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:29,653 INFO L168 Benchmark]: TraceAbstraction took 209.23 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:29,654 INFO L168 Benchmark]: Witness Printer took 3.99 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. [2019-11-28 16:41:29,659 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.85 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 250.76 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 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 104.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.52 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. * RCFGBuilder took 204.56 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: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 209.23 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.99 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 [L8] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: 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 0.1.25-f470102 [2019-11-28 16:41:31,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:41:31,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:41:31,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:41:31,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:41:31,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:41:31,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:41:31,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:41:31,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:41:31,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:41:31,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:41:31,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:41:31,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:41:31,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:41:31,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:41:31,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:41:31,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:41:31,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:41:31,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:41:31,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:41:31,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:41:31,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:41:31,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:41:31,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:41:31,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:41:31,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:41:31,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:41:31,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:41:31,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:41:31,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:41:31,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:41:31,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:41:31,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:41:31,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:41:31,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:41:31,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:41:31,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:41:31,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:41:31,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:41:31,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:41:31,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:41:31,833 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:41:31,869 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:41:31,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:41:31,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:41:31,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:41:31,876 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:41:31,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:41:31,877 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:41:31,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:41:31,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:41:31,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:41:31,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:41:31,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:41:31,879 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:41:31,879 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:41:31,879 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:41:31,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:41:31,881 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:41:31,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:41:31,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:41:31,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:41:31,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:41:31,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:41:31,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:41:31,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:41:31,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:41:31,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:41:31,885 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:41:31,885 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:41:31,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:41:31,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:41:31,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:41:31,887 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 [2019-11-28 16:41:32,248 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:41:32,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:41:32,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:41:32,276 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:41:32,277 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:41:32,278 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square-2.c [2019-11-28 16:41:32,344 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9490db0e/208837eae32e41c993fabf69bd70ac06/FLAG49ba396cb [2019-11-28 16:41:32,762 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:41:32,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-2.c [2019-11-28 16:41:32,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9490db0e/208837eae32e41c993fabf69bd70ac06/FLAG49ba396cb [2019-11-28 16:41:33,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9490db0e/208837eae32e41c993fabf69bd70ac06 [2019-11-28 16:41:33,179 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:41:33,181 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:41:33,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:41:33,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:41:33,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:41:33,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:41:33" (1/1) ... [2019-11-28 16:41:33,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3463e911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:33, skipping insertion in model container [2019-11-28 16:41:33,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:41:33" (1/1) ... [2019-11-28 16:41:33,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:41:33,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:41:33,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:41:33,466 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:41:33,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:41:33,507 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:41:33,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:33 WrapperNode [2019-11-28 16:41:33,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:41:33,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:41:33,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:41:33,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:41:33,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:33" (1/1) ... [2019-11-28 16:41:33,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:33" (1/1) ... [2019-11-28 16:41:33,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:41:33,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:41:33,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:41:33,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:41:33,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:33" (1/1) ... [2019-11-28 16:41:33,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:33" (1/1) ... [2019-11-28 16:41:33,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:33" (1/1) ... [2019-11-28 16:41:33,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:33" (1/1) ... [2019-11-28 16:41:33,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:33" (1/1) ... [2019-11-28 16:41:33,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:33" (1/1) ... [2019-11-28 16:41:33,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:33" (1/1) ... [2019-11-28 16:41:33,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:41:33,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:41:33,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:41:33,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:41:33,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:33" (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 [2019-11-28 16:41:33,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:41:33,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:41:34,381 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:41:34,382 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 16:41:34,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:34 BoogieIcfgContainer [2019-11-28 16:41:34,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:41:34,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:41:34,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:41:34,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:41:34,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:41:33" (1/3) ... [2019-11-28 16:41:34,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f19edb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:41:34, skipping insertion in model container [2019-11-28 16:41:34,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:33" (2/3) ... [2019-11-28 16:41:34,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f19edb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:41:34, skipping insertion in model container [2019-11-28 16:41:34,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:34" (3/3) ... [2019-11-28 16:41:34,393 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square-2.c [2019-11-28 16:41:34,403 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:41:34,408 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:41:34,420 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:41:34,446 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:41:34,447 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:41:34,447 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:41:34,447 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:41:34,449 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:41:34,449 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:41:34,449 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:41:34,450 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:41:34,462 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-28 16:41:34,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 16:41:34,467 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:41:34,467 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 16:41:34,468 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:41:34,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:41:34,473 INFO L82 PathProgramCache]: Analyzing trace with hash 28693796, now seen corresponding path program 1 times [2019-11-28 16:41:34,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:41:34,482 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494360801] [2019-11-28 16:41:34,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-28 16:41:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:41:34,675 WARN L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 16:41:34,680 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:41:34,767 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:41:35,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:41:35,566 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:41:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:41:35,986 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494360801] [2019-11-28 16:41:35,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:41:35,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 6 [2019-11-28 16:41:35,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534366194] [2019-11-28 16:41:35,993 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:41:35,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:41:36,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:41:36,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:41:36,008 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 6 states. [2019-11-28 16:41:36,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:41:36,341 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2019-11-28 16:41:36,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 16:41:36,382 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2019-11-28 16:41:36,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:41:36,387 INFO L225 Difference]: With dead ends: 20 [2019-11-28 16:41:36,387 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 16:41:36,390 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-28 16:41:36,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 16:41:36,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 16:41:36,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 16:41:36,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 16:41:36,418 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-11-28 16:41:36,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:41:36,419 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 16:41:36,419 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:41:36,419 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 16:41:36,419 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 16:41:36,620 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:41:36,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 16:41:36,723 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 16:41:36,723 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 16:41:36,723 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 16:41:36,723 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 16:41:36,724 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-11-28 16:41:36,724 INFO L242 CegarLoopResult]: At program point L22(lines 10 23) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_main_~x~0 .cse0) (= currentRoundingMode roundNearestTiesToEven) (fp.geq ULTIMATE.start_main_~x~0 (fp.neg .cse0)))) [2019-11-28 16:41:36,724 INFO L246 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2019-11-28 16:41:36,724 INFO L246 CegarLoopResult]: For program point L17-2(lines 17 21) no Hoare annotation was computed. [2019-11-28 16:41:36,724 INFO L246 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2019-11-28 16:41:36,724 INFO L246 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2019-11-28 16:41:36,725 INFO L242 CegarLoopResult]: At program point L8-3(line 8) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode 1.0))) (and (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (fp.leq ULTIMATE.start_main_~x~0 .cse0) (= currentRoundingMode roundNearestTiesToEven) (fp.geq ULTIMATE.start_main_~x~0 (fp.neg .cse0)))) [2019-11-28 16:41:36,735 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:41:36,739 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,742 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,742 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,745 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:41:36,746 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,746 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,746 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,748 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:41:36,748 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,748 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,749 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,749 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:41:36,749 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,749 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,750 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:41:36 BoogieIcfgContainer [2019-11-28 16:41:36,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:41:36,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:41:36,753 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:41:36,753 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:41:36,754 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:34" (3/4) ... [2019-11-28 16:41:36,758 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 16:41:36,773 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-28 16:41:36,773 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 16:41:36,774 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 16:41:36,831 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:41:36,832 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:41:36,834 INFO L168 Benchmark]: Toolchain (without parser) took 3652.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 963.1 MB in the beginning and 1.1 GB in the end (delta: -94.4 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:36,835 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:41:36,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.48 ms. Allocated memory is still 1.0 GB. Free memory was 963.1 MB in the beginning and 952.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:36,838 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -159.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:36,844 INFO L168 Benchmark]: Boogie Preprocessor took 25.52 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. [2019-11-28 16:41:36,845 INFO L168 Benchmark]: RCFGBuilder took 744.41 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:36,846 INFO L168 Benchmark]: TraceAbstraction took 2366.99 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: 40.5 MB). Peak memory consumption was 40.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:36,846 INFO L168 Benchmark]: Witness Printer took 79.76 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. [2019-11-28 16:41:36,852 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 326.48 ms. Allocated memory is still 1.0 GB. Free memory was 963.1 MB in the beginning and 952.3 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 103.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -159.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.52 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. * RCFGBuilder took 744.41 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2366.99 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: 40.5 MB). Peak memory consumption was 40.5 MB. Max. memory is 11.5 GB. * Witness Printer took 79.76 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.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * 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 - InvariantResult [Line: 8]: Loop Invariant [2019-11-28 16:41:36,872 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:41:36,873 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,873 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,874 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,875 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:41:36,875 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,875 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,875 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((~bvadd64(cond, 4294967295bv32) == 0bv32 && ~fp.leq~FLOAT(x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.geq~FLOAT(x, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) - InvariantResult [Line: 10]: Loop Invariant [2019-11-28 16:41:36,876 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:41:36,876 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,876 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,876 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,877 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:41:36,877 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,877 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:41:36,877 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (~fp.leq~FLOAT(x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.geq~FLOAT(x, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 2.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 7 SDtfs, 25 SDslu, 4 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 35 HoareAnnotationTreeSize, 2 FomulaSimplifications, 21 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 124 SizeOfPredicates, 5 NumberOfNonLiveVariables, 11 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...