./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/double_req_bl_1032b_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/double_req_bl_1032b_true-unreach-call.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 2fc40f01120ca51e77cbf79a7824b0aac7011828 .................................................................................................................................................................................................................................................................................................. 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 /storage/repos/svcomp/c/float-newlib/double_req_bl_1032b_true-unreach-call.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 2fc40f01120ca51e77cbf79a7824b0aac7011828 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 17:55:23,439 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 17:55:23,441 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 17:55:23,454 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 17:55:23,455 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 17:55:23,457 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 17:55:23,459 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 17:55:23,462 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 17:55:23,464 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 17:55:23,467 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 17:55:23,470 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 17:55:23,470 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 17:55:23,472 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 17:55:23,474 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 17:55:23,482 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 17:55:23,484 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 17:55:23,487 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 17:55:23,490 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 17:55:23,494 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 17:55:23,498 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 17:55:23,500 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 17:55:23,504 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 17:55:23,508 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 17:55:23,509 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 17:55:23,509 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 17:55:23,510 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 17:55:23,511 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 17:55:23,512 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 17:55:23,513 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 17:55:23,514 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 17:55:23,515 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 17:55:23,515 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 17:55:23,515 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 17:55:23,516 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 17:55:23,516 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 17:55:23,518 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 17:55:23,518 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 17:55:23,542 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 17:55:23,543 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 17:55:23,544 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 17:55:23,547 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 17:55:23,548 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 17:55:23,548 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 17:55:23,548 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 17:55:23,548 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 17:55:23,548 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 17:55:23,550 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 17:55:23,550 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 17:55:23,551 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 17:55:23,551 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 17:55:23,551 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 17:55:23,551 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 17:55:23,552 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 17:55:23,552 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 17:55:23,552 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 17:55:23,554 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 17:55:23,555 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 17:55:23,555 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 17:55:23,555 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 17:55:23,555 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 17:55:23,555 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:55:23,555 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 17:55:23,556 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 17:55:23,557 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 17:55:23,557 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 17:55:23,557 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 17:55:23,557 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 17:55:23,558 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 -> 2fc40f01120ca51e77cbf79a7824b0aac7011828 [2018-11-28 17:55:23,598 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 17:55:23,612 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 17:55:23,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 17:55:23,617 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 17:55:23,618 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 17:55:23,618 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/double_req_bl_1032b_true-unreach-call.c [2018-11-28 17:55:23,681 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3946fe9d6/55a941195e7a4d42b7d8d30792ce96f6/FLAGd5ff94a9c [2018-11-28 17:55:24,121 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 17:55:24,122 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/double_req_bl_1032b_true-unreach-call.c [2018-11-28 17:55:24,135 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3946fe9d6/55a941195e7a4d42b7d8d30792ce96f6/FLAGd5ff94a9c [2018-11-28 17:55:24,476 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3946fe9d6/55a941195e7a4d42b7d8d30792ce96f6 [2018-11-28 17:55:24,480 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 17:55:24,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 17:55:24,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 17:55:24,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 17:55:24,487 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 17:55:24,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:55:24" (1/1) ... [2018-11-28 17:55:24,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5530d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:24, skipping insertion in model container [2018-11-28 17:55:24,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:55:24" (1/1) ... [2018-11-28 17:55:24,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 17:55:24,531 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 17:55:24,834 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:55:24,841 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 17:55:24,895 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:55:24,918 INFO L195 MainTranslator]: Completed translation [2018-11-28 17:55:24,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:24 WrapperNode [2018-11-28 17:55:24,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 17:55:24,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 17:55:24,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 17:55:24,920 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 17:55:24,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:24" (1/1) ... [2018-11-28 17:55:24,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:24" (1/1) ... [2018-11-28 17:55:24,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 17:55:24,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 17:55:24,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 17:55:24,952 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 17:55:24,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:24" (1/1) ... [2018-11-28 17:55:24,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:24" (1/1) ... [2018-11-28 17:55:24,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:24" (1/1) ... [2018-11-28 17:55:24,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:24" (1/1) ... [2018-11-28 17:55:25,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:24" (1/1) ... [2018-11-28 17:55:25,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:24" (1/1) ... [2018-11-28 17:55:25,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:24" (1/1) ... [2018-11-28 17:55:25,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 17:55:25,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 17:55:25,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 17:55:25,059 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 17:55:25,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:55:25,123 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-28 17:55:25,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-28 17:55:25,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 17:55:25,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 17:55:25,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-28 17:55:25,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 17:55:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 17:55:25,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 17:55:25,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 17:55:25,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 17:55:25,125 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2018-11-28 17:55:25,125 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2018-11-28 17:55:25,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 17:55:25,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 17:55:25,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 17:55:25,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 17:55:25,658 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 17:55:25,658 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 17:55:25,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:55:25 BoogieIcfgContainer [2018-11-28 17:55:25,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 17:55:25,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 17:55:25,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 17:55:25,664 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 17:55:25,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:55:24" (1/3) ... [2018-11-28 17:55:25,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214fa251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:55:25, skipping insertion in model container [2018-11-28 17:55:25,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:24" (2/3) ... [2018-11-28 17:55:25,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214fa251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:55:25, skipping insertion in model container [2018-11-28 17:55:25,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:55:25" (3/3) ... [2018-11-28 17:55:25,669 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032b_true-unreach-call.c [2018-11-28 17:55:25,681 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 17:55:25,691 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 17:55:25,710 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 17:55:25,745 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 17:55:25,746 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 17:55:25,747 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 17:55:25,747 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 17:55:25,747 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 17:55:25,748 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 17:55:25,748 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 17:55:25,748 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 17:55:25,748 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 17:55:25,770 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-11-28 17:55:25,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 17:55:25,776 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:55:25,777 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:55:25,779 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:55:25,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:55:25,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1666868037, now seen corresponding path program 1 times [2018-11-28 17:55:25,787 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:55:25,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:55:25,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:55:25,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:55:25,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:55:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:55:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:55:25,913 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:55:25,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 17:55:25,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 17:55:25,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 17:55:25,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 17:55:25,933 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-11-28 17:55:25,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:55:25,956 INFO L93 Difference]: Finished difference Result 78 states and 109 transitions. [2018-11-28 17:55:25,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 17:55:25,957 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-11-28 17:55:25,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:55:25,966 INFO L225 Difference]: With dead ends: 78 [2018-11-28 17:55:25,967 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 17:55:25,970 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 17:55:25,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 17:55:26,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-28 17:55:26,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 17:55:26,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2018-11-28 17:55:26,015 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 19 [2018-11-28 17:55:26,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:55:26,016 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2018-11-28 17:55:26,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 17:55:26,016 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2018-11-28 17:55:26,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 17:55:26,017 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:55:26,017 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:55:26,018 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:55:26,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:55:26,018 INFO L82 PathProgramCache]: Analyzing trace with hash -165901892, now seen corresponding path program 1 times [2018-11-28 17:55:26,018 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:55:26,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:55:26,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:55:26,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:55:26,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:55:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:55:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:55:26,171 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 17:55:26,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:55:26 BoogieIcfgContainer [2018-11-28 17:55:26,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 17:55:26,207 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 17:55:26,207 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 17:55:26,208 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 17:55:26,208 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:55:25" (3/4) ... [2018-11-28 17:55:26,212 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 17:55:26,212 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 17:55:26,213 INFO L168 Benchmark]: Toolchain (without parser) took 1732.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 950.0 MB in the beginning and 1.0 GB in the end (delta: -84.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. [2018-11-28 17:55:26,215 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:55:26,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.49 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 939.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 17:55:26,217 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.18 ms. Allocated memory is still 1.0 GB. Free memory was 939.3 MB in the beginning and 933.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 17:55:26,217 INFO L168 Benchmark]: Boogie Preprocessor took 106.21 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 933.9 MB in the beginning and 1.1 GB in the end (delta: -147.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-11-28 17:55:26,218 INFO L168 Benchmark]: RCFGBuilder took 600.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2018-11-28 17:55:26,219 INFO L168 Benchmark]: TraceAbstraction took 546.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. [2018-11-28 17:55:26,220 INFO L168 Benchmark]: Witness Printer took 4.84 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:55:26,225 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 436.49 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 939.3 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 32.18 ms. Allocated memory is still 1.0 GB. Free memory was 939.3 MB in the beginning and 933.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 106.21 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 933.9 MB in the beginning and 1.1 GB in the end (delta: -147.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 600.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 546.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.84 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 34, overapproximation of someUnaryDOUBLEoperation at line 86, overapproximation of bitwiseAnd at line 35, overapproximation of someBinaryDOUBLEComparisonOperation at line 90. Possible FailurePath: [L86] double x = -0.0; [L87] CALL, EXPR round_double(x) VAL [\old(x)=6442450946] [L18] __int32_t msw, exponent_less_1023; [L19] __uint32_t lsw; VAL [\old(x)=6442450946, x=6442450946] [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L26] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=6442450946, exponent_less_1023=0, lsw=0, msw=-2147483648, x=6442450946] [L27] COND TRUE exponent_less_1023 < 20 VAL [\old(x)=6442450946, exponent_less_1023=0, lsw=0, msw=-2147483648, x=6442450946] [L28] COND FALSE !(exponent_less_1023 < 0) [L34] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; VAL [\old(x)=6442450946, exponent_less_1023=0, lsw=0, msw=-2147483648, x=6442450946] [L35] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L36] return x; VAL [\old(x)=6442450946, \result=6442450946, exponent_less_1023=0, lsw=0, msw=-2147483648, x=6442450946] [L87] RET, EXPR round_double(x) VAL [round_double(x)=6442450946, x=6442450946] [L87] double res = round_double(x); [L90] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=6442450946, res == -0.0 && __signbit_double(res) == 1=0, x=6442450946] [L90] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L91] __VERIFIER_error() VAL [res=6442450946, x=6442450946] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 51 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 0.1.24-91b1670 [2018-11-28 17:55:28,697 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 17:55:28,700 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 17:55:28,718 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 17:55:28,720 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 17:55:28,721 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 17:55:28,723 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 17:55:28,727 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 17:55:28,730 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 17:55:28,732 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 17:55:28,735 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 17:55:28,736 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 17:55:28,737 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 17:55:28,738 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 17:55:28,741 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 17:55:28,742 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 17:55:28,743 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 17:55:28,747 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 17:55:28,757 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 17:55:28,761 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 17:55:28,764 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 17:55:28,766 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 17:55:28,772 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 17:55:28,773 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 17:55:28,774 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 17:55:28,775 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 17:55:28,777 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 17:55:28,779 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 17:55:28,781 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 17:55:28,782 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 17:55:28,784 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 17:55:28,785 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 17:55:28,785 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 17:55:28,785 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 17:55:28,786 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 17:55:28,789 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 17:55:28,790 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 17:55:28,816 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 17:55:28,817 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 17:55:28,818 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 17:55:28,819 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 17:55:28,820 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 17:55:28,821 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 17:55:28,821 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 17:55:28,821 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 17:55:28,822 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 17:55:28,822 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 17:55:28,822 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 17:55:28,822 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 17:55:28,822 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 17:55:28,822 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 17:55:28,823 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 17:55:28,823 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 17:55:28,823 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 17:55:28,823 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 17:55:28,823 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 17:55:28,823 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 17:55:28,824 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 17:55:28,824 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 17:55:28,824 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 17:55:28,824 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 17:55:28,824 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:55:28,824 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 17:55:28,825 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 17:55:28,825 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 17:55:28,825 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 17:55:28,825 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 17:55:28,825 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 17:55:28,825 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 17:55:28,826 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 -> 2fc40f01120ca51e77cbf79a7824b0aac7011828 [2018-11-28 17:55:28,865 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 17:55:28,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 17:55:28,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 17:55:28,884 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 17:55:28,885 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 17:55:28,886 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/double_req_bl_1032b_true-unreach-call.c [2018-11-28 17:55:28,949 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36ca2d56/4016dc4ed9e14f93a32a22713515da67/FLAG90c3867db [2018-11-28 17:55:29,444 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 17:55:29,449 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/double_req_bl_1032b_true-unreach-call.c [2018-11-28 17:55:29,466 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36ca2d56/4016dc4ed9e14f93a32a22713515da67/FLAG90c3867db [2018-11-28 17:55:29,786 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36ca2d56/4016dc4ed9e14f93a32a22713515da67 [2018-11-28 17:55:29,791 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 17:55:29,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 17:55:29,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 17:55:29,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 17:55:29,800 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 17:55:29,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:55:29" (1/1) ... [2018-11-28 17:55:29,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296b674b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:29, skipping insertion in model container [2018-11-28 17:55:29,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:55:29" (1/1) ... [2018-11-28 17:55:29,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 17:55:29,841 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 17:55:30,072 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:55:30,082 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 17:55:30,126 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:55:30,157 INFO L195 MainTranslator]: Completed translation [2018-11-28 17:55:30,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:30 WrapperNode [2018-11-28 17:55:30,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 17:55:30,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 17:55:30,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 17:55:30,159 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 17:55:30,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:30" (1/1) ... [2018-11-28 17:55:30,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:30" (1/1) ... [2018-11-28 17:55:30,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 17:55:30,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 17:55:30,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 17:55:30,194 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 17:55:30,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:30" (1/1) ... [2018-11-28 17:55:30,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:30" (1/1) ... [2018-11-28 17:55:30,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:30" (1/1) ... [2018-11-28 17:55:30,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:30" (1/1) ... [2018-11-28 17:55:30,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:30" (1/1) ... [2018-11-28 17:55:30,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:30" (1/1) ... [2018-11-28 17:55:30,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:30" (1/1) ... [2018-11-28 17:55:30,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 17:55:30,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 17:55:30,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 17:55:30,317 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 17:55:30,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:55:30,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-11-28 17:55:30,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-28 17:55:30,374 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-28 17:55:30,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-28 17:55:30,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 17:55:30,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 17:55:30,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 17:55:30,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 17:55:30,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 17:55:30,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 17:55:30,376 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2018-11-28 17:55:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2018-11-28 17:55:30,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 17:55:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 17:55:30,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-28 17:55:30,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 17:55:30,661 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 17:55:31,018 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 17:55:31,076 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 17:55:31,077 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 17:55:31,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:55:31 BoogieIcfgContainer [2018-11-28 17:55:31,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 17:55:31,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 17:55:31,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 17:55:31,082 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 17:55:31,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:55:29" (1/3) ... [2018-11-28 17:55:31,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b4ff71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:55:31, skipping insertion in model container [2018-11-28 17:55:31,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:55:30" (2/3) ... [2018-11-28 17:55:31,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b4ff71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:55:31, skipping insertion in model container [2018-11-28 17:55:31,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:55:31" (3/3) ... [2018-11-28 17:55:31,085 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032b_true-unreach-call.c [2018-11-28 17:55:31,095 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 17:55:31,104 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 17:55:31,123 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 17:55:31,157 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 17:55:31,158 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 17:55:31,158 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 17:55:31,158 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 17:55:31,158 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 17:55:31,159 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 17:55:31,159 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 17:55:31,159 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 17:55:31,159 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 17:55:31,177 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-11-28 17:55:31,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 17:55:31,184 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:55:31,185 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:55:31,187 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:55:31,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:55:31,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1666868037, now seen corresponding path program 1 times [2018-11-28 17:55:31,197 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:55:31,198 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 [2018-11-28 17:55:31,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:55:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:55:31,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:55:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:55:31,293 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:55:31,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:55:31,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 17:55:31,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 17:55:31,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 17:55:31,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 17:55:31,335 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-11-28 17:55:31,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:55:31,362 INFO L93 Difference]: Finished difference Result 78 states and 109 transitions. [2018-11-28 17:55:31,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 17:55:31,363 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-11-28 17:55:31,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:55:31,374 INFO L225 Difference]: With dead ends: 78 [2018-11-28 17:55:31,375 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 17:55:31,379 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 17:55:31,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 17:55:31,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-28 17:55:31,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 17:55:31,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2018-11-28 17:55:31,423 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 19 [2018-11-28 17:55:31,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:55:31,424 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2018-11-28 17:55:31,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 17:55:31,424 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2018-11-28 17:55:31,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 17:55:31,425 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:55:31,425 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:55:31,425 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:55:31,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:55:31,426 INFO L82 PathProgramCache]: Analyzing trace with hash -165901892, now seen corresponding path program 1 times [2018-11-28 17:55:31,427 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:55:31,427 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 17:55:31,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-28 17:55:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:55:31,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:55:31,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:55:31,962 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:55:31,974 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:55:31,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 17:55:31,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 17:55:31,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 17:55:31,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 17:55:31,977 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 7 states. [2018-11-28 17:55:32,979 WARN L180 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-11-28 17:55:33,726 WARN L180 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-11-28 17:55:34,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:55:34,626 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2018-11-28 17:55:34,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 17:55:34,628 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-11-28 17:55:34,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:55:34,629 INFO L225 Difference]: With dead ends: 65 [2018-11-28 17:55:34,629 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 17:55:34,631 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-11-28 17:55:34,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 17:55:34,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-28 17:55:34,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 17:55:34,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-11-28 17:55:34,638 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 20 [2018-11-28 17:55:34,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:55:34,639 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-11-28 17:55:34,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 17:55:34,639 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-11-28 17:55:34,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 17:55:34,640 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:55:34,640 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:55:34,641 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:55:34,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:55:34,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1090994049, now seen corresponding path program 1 times [2018-11-28 17:55:34,644 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:55:34,645 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 17:55:34,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-28 17:55:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:55:34,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:55:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:55:34,900 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:55:34,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:55:34,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 17:55:34,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 17:55:34,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 17:55:34,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 17:55:34,916 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 7 states. [2018-11-28 17:55:35,413 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-28 17:55:35,665 WARN L180 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-28 17:55:35,891 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-28 17:55:37,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:55:37,572 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2018-11-28 17:55:37,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 17:55:37,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-11-28 17:55:37,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:55:37,578 INFO L225 Difference]: With dead ends: 52 [2018-11-28 17:55:37,578 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 17:55:37,578 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-11-28 17:55:37,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 17:55:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-28 17:55:37,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 17:55:37,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-11-28 17:55:37,589 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 24 [2018-11-28 17:55:37,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:55:37,590 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-11-28 17:55:37,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 17:55:37,590 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-11-28 17:55:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 17:55:37,594 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:55:37,594 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:55:37,594 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:55:37,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:55:37,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1792058627, now seen corresponding path program 1 times [2018-11-28 17:55:37,597 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:55:37,597 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 17:55:37,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-28 17:55:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:55:37,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:55:37,729 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2018-11-28 17:55:37,733 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 38 [2018-11-28 17:55:37,753 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-11-28 17:55:37,753 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 17:55:37,759 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 17:55:37,767 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 17:55:37,770 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 17:55:37,771 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:51, output treesize:21 [2018-11-28 17:55:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:55:37,877 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:55:37,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:55:37,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 17:55:37,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 17:55:37,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 17:55:37,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-11-28 17:55:37,892 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 8 states. [2018-11-28 17:55:38,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:55:38,147 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2018-11-28 17:55:38,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 17:55:38,148 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2018-11-28 17:55:38,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:55:38,149 INFO L225 Difference]: With dead ends: 36 [2018-11-28 17:55:38,150 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 17:55:38,150 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-11-28 17:55:38,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 17:55:38,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-28 17:55:38,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 17:55:38,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2018-11-28 17:55:38,156 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 24 [2018-11-28 17:55:38,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:55:38,156 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2018-11-28 17:55:38,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 17:55:38,156 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2018-11-28 17:55:38,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 17:55:38,158 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:55:38,158 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:55:38,158 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:55:38,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:55:38,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1819196168, now seen corresponding path program 1 times [2018-11-28 17:55:38,159 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:55:38,159 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-28 17:55:38,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:55:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:55:38,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:55:38,358 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 48 [2018-11-28 17:55:38,363 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 39 [2018-11-28 17:55:38,384 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2018-11-28 17:55:38,385 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 17:55:38,390 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 17:55:38,400 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 17:55:38,417 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-28 17:55:38,418 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:64, output treesize:34 [2018-11-28 17:55:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:55:39,136 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:55:39,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:55:39,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-11-28 17:55:39,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 17:55:39,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 17:55:39,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-11-28 17:55:39,149 INFO L87 Difference]: Start difference. First operand 33 states and 32 transitions. Second operand 15 states. [2018-11-28 17:55:41,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:55:41,718 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2018-11-28 17:55:41,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 17:55:41,721 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2018-11-28 17:55:41,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:55:41,721 INFO L225 Difference]: With dead ends: 33 [2018-11-28 17:55:41,722 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 17:55:41,723 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2018-11-28 17:55:41,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 17:55:41,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 17:55:41,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 17:55:41,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 17:55:41,723 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-11-28 17:55:41,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:55:41,724 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 17:55:41,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 17:55:41,724 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 17:55:41,724 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 17:55:41,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 17:55:41,934 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 17:55:41,934 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 17:55:41,934 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 17:55:41,934 INFO L448 ceAbstractionStarter]: For program point L27(lines 27 56) no Hoare annotation was computed. [2018-11-28 17:55:41,934 INFO L448 ceAbstractionStarter]: For program point round_doubleFINAL(lines 17 64) no Hoare annotation was computed. [2018-11-28 17:55:41,935 INFO L448 ceAbstractionStarter]: For program point L52(lines 52 53) no Hoare annotation was computed. [2018-11-28 17:55:41,935 INFO L448 ceAbstractionStarter]: For program point L52-2(lines 52 53) no Hoare annotation was computed. [2018-11-28 17:55:41,935 INFO L451 ceAbstractionStarter]: At program point round_doubleENTRY(lines 17 64) the Hoare annotation is: true [2018-11-28 17:55:41,935 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 40) no Hoare annotation was computed. [2018-11-28 17:55:41,935 INFO L448 ceAbstractionStarter]: For program point L57(lines 57 62) no Hoare annotation was computed. [2018-11-28 17:55:41,935 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 17 64) no Hoare annotation was computed. [2018-11-28 17:55:41,935 INFO L448 ceAbstractionStarter]: For program point L57-2(lines 57 62) no Hoare annotation was computed. [2018-11-28 17:55:41,936 INFO L448 ceAbstractionStarter]: For program point round_doubleEXIT(lines 17 64) no Hoare annotation was computed. [2018-11-28 17:55:41,936 INFO L448 ceAbstractionStarter]: For program point L20-1(lines 20 25) no Hoare annotation was computed. [2018-11-28 17:55:41,936 INFO L444 ceAbstractionStarter]: At program point L20-2(lines 20 25) the Hoare annotation is: (= |round_double_#in~x| round_double_~x) [2018-11-28 17:55:41,936 INFO L448 ceAbstractionStarter]: For program point L20-3(lines 20 25) no Hoare annotation was computed. [2018-11-28 17:55:41,936 INFO L448 ceAbstractionStarter]: For program point L49(lines 49 50) no Hoare annotation was computed. [2018-11-28 17:55:41,936 INFO L448 ceAbstractionStarter]: For program point L41(lines 41 56) no Hoare annotation was computed. [2018-11-28 17:55:41,936 INFO L448 ceAbstractionStarter]: For program point L42(lines 42 45) no Hoare annotation was computed. [2018-11-28 17:55:41,936 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 31) no Hoare annotation was computed. [2018-11-28 17:55:41,937 INFO L448 ceAbstractionStarter]: For program point L30-2(lines 30 31) no Hoare annotation was computed. [2018-11-28 17:55:41,937 INFO L448 ceAbstractionStarter]: For program point L35(lines 35 36) no Hoare annotation was computed. [2018-11-28 17:55:41,937 INFO L448 ceAbstractionStarter]: For program point __signbit_doubleFINAL(lines 66 76) no Hoare annotation was computed. [2018-11-28 17:55:41,937 INFO L448 ceAbstractionStarter]: For program point __signbit_doubleEXIT(lines 66 76) no Hoare annotation was computed. [2018-11-28 17:55:41,937 INFO L451 ceAbstractionStarter]: At program point __signbit_doubleENTRY(lines 66 76) the Hoare annotation is: true [2018-11-28 17:55:41,937 INFO L448 ceAbstractionStarter]: For program point L69-1(lines 69 73) no Hoare annotation was computed. [2018-11-28 17:55:41,937 INFO L444 ceAbstractionStarter]: At program point L69-2(lines 69 73) the Hoare annotation is: (= |__signbit_double_#in~x| __signbit_double_~x) [2018-11-28 17:55:41,938 INFO L448 ceAbstractionStarter]: For program point L69-3(lines 69 73) no Hoare annotation was computed. [2018-11-28 17:55:41,944 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 17:55:41,944 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 17:55:41,944 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 17:55:41,944 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 17:55:41,945 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 78 96) the Hoare annotation is: true [2018-11-28 17:55:41,945 INFO L448 ceAbstractionStarter]: For program point L91(line 91) no Hoare annotation was computed. [2018-11-28 17:55:41,945 INFO L448 ceAbstractionStarter]: For program point L90(line 90) no Hoare annotation was computed. [2018-11-28 17:55:41,945 INFO L444 ceAbstractionStarter]: At program point L90-1(line 90) the Hoare annotation is: (and (exists ((|v_q#valueAsBitvector_5| (_ BitVec 64)) (round_double_~lsw~0 (_ BitVec 32))) (and (= (fp ((_ extract 63 63) |v_q#valueAsBitvector_5|) ((_ extract 62 52) |v_q#valueAsBitvector_5|) ((_ extract 51 0) |v_q#valueAsBitvector_5|)) (fp.neg (_ +zero 11 53))) (= (let ((.cse0 (concat (bvand (_ bv2147483648 32) ((_ extract 63 32) |v_q#valueAsBitvector_5|)) round_double_~lsw~0))) (fp ((_ extract 63 63) .cse0) ((_ extract 62 52) .cse0) ((_ extract 51 0) .cse0))) main_~res~0))) |main_#t~short10| (= main_~x~0 (fp.neg (_ +zero 11 53)))) [2018-11-28 17:55:41,945 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 78 96) no Hoare annotation was computed. [2018-11-28 17:55:41,945 INFO L448 ceAbstractionStarter]: For program point L90-2(line 90) no Hoare annotation was computed. [2018-11-28 17:55:41,946 INFO L444 ceAbstractionStarter]: At program point L87(line 87) the Hoare annotation is: (= main_~x~0 (fp.neg (_ +zero 11 53))) [2018-11-28 17:55:41,948 INFO L448 ceAbstractionStarter]: For program point L87-1(line 87) no Hoare annotation was computed. [2018-11-28 17:55:41,948 INFO L448 ceAbstractionStarter]: For program point L90-4(lines 90 93) no Hoare annotation was computed. [2018-11-28 17:55:41,948 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2018-11-28 17:55:41,948 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 78 96) no Hoare annotation was computed. [2018-11-28 17:55:41,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:55:41 BoogieIcfgContainer [2018-11-28 17:55:41,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 17:55:41,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 17:55:41,963 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 17:55:41,963 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 17:55:41,963 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:55:31" (3/4) ... [2018-11-28 17:55:41,967 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 17:55:41,973 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 17:55:41,974 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure round_double [2018-11-28 17:55:41,974 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_double [2018-11-28 17:55:41,974 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 17:55:41,981 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2018-11-28 17:55:41,981 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-28 17:55:41,982 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 17:55:42,015 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-28 17:55:42,015 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-28 17:55:42,057 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 17:55:42,060 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 17:55:42,061 INFO L168 Benchmark]: Toolchain (without parser) took 12270.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 951.4 MB in the beginning and 832.6 MB in the end (delta: 118.8 MB). Peak memory consumption was 245.1 MB. Max. memory is 11.5 GB. [2018-11-28 17:55:42,062 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:55:42,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.17 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 935.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-28 17:55:42,063 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.01 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:55:42,064 INFO L168 Benchmark]: Boogie Preprocessor took 122.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -185.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2018-11-28 17:55:42,065 INFO L168 Benchmark]: RCFGBuilder took 760.13 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: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2018-11-28 17:55:42,065 INFO L168 Benchmark]: TraceAbstraction took 10883.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 839.4 MB in the end (delta: 256.0 MB). Peak memory consumption was 256.0 MB. Max. memory is 11.5 GB. [2018-11-28 17:55:42,066 INFO L168 Benchmark]: Witness Printer took 98.07 ms. Allocated memory is still 1.2 GB. Free memory was 839.4 MB in the beginning and 832.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-28 17:55:42,070 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 364.17 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 935.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.01 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 122.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -185.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 760.13 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: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10883.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 839.4 MB in the end (delta: 256.0 MB). Peak memory consumption was 256.0 MB. Max. memory is 11.5 GB. * Witness Printer took 98.07 ms. Allocated memory is still 1.2 GB. Free memory was 839.4 MB in the beginning and 832.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: 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: 20]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 69]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. SAFE Result, 10.8s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 8.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 157 SDtfs, 134 SDslu, 557 SDs, 0 SdLazy, 266 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 16 PreInvPairs, 19 NumberOfFragments, 58 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 114 ConstructedInterpolants, 44 QuantifiedInterpolants, 27395 SizeOfPredicates, 21 NumberOfNonLiveVariables, 331 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...