./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e1a00cf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121b.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cc6ee66f7e92cd1fd8921d2fb3fed6eb54ee605f ........................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121b.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cc6ee66f7e92cd1fd8921d2fb3fed6eb54ee605f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-0e1a00c [2020-11-29 15:48:01,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 15:48:01,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 15:48:01,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 15:48:01,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 15:48:01,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 15:48:01,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 15:48:01,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 15:48:01,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 15:48:01,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 15:48:01,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 15:48:01,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 15:48:01,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 15:48:01,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 15:48:01,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 15:48:01,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 15:48:01,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 15:48:01,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 15:48:01,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 15:48:01,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 15:48:01,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 15:48:01,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 15:48:01,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 15:48:01,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 15:48:01,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 15:48:01,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 15:48:01,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 15:48:01,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 15:48:01,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 15:48:01,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 15:48:01,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 15:48:01,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 15:48:01,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 15:48:01,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 15:48:01,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 15:48:01,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 15:48:01,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 15:48:01,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 15:48:01,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 15:48:01,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 15:48:01,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 15:48:01,495 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 15:48:01,544 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 15:48:01,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 15:48:01,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 15:48:01,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 15:48:01,550 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 15:48:01,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 15:48:01,550 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 15:48:01,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 15:48:01,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 15:48:01,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 15:48:01,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 15:48:01,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 15:48:01,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 15:48:01,553 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 15:48:01,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 15:48:01,553 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 15:48:01,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 15:48:01,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 15:48:01,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 15:48:01,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 15:48:01,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 15:48:01,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 15:48:01,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 15:48:01,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 15:48:01,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 15:48:01,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 15:48:01,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 15:48:01,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 15:48:01,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 15:48:01,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc6ee66f7e92cd1fd8921d2fb3fed6eb54ee605f [2020-11-29 15:48:01,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 15:48:02,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 15:48:02,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 15:48:02,016 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 15:48:02,017 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 15:48:02,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121b.c [2020-11-29 15:48:02,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c531f99d/c1dd14a1a96d45e7b33c524f0a1f8753/FLAGf22818349 [2020-11-29 15:48:02,748 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 15:48:02,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1121b.c [2020-11-29 15:48:02,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c531f99d/c1dd14a1a96d45e7b33c524f0a1f8753/FLAGf22818349 [2020-11-29 15:48:03,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c531f99d/c1dd14a1a96d45e7b33c524f0a1f8753 [2020-11-29 15:48:03,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 15:48:03,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 15:48:03,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 15:48:03,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 15:48:03,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 15:48:03,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:48:03" (1/1) ... [2020-11-29 15:48:03,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a7a542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:03, skipping insertion in model container [2020-11-29 15:48:03,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:48:03" (1/1) ... [2020-11-29 15:48:03,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 15:48:03,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 15:48:03,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:48:03,506 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 15:48:03,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:48:03,563 INFO L208 MainTranslator]: Completed translation [2020-11-29 15:48:03,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:03 WrapperNode [2020-11-29 15:48:03,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 15:48:03,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 15:48:03,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 15:48:03,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 15:48:03,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:03" (1/1) ... [2020-11-29 15:48:03,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:03" (1/1) ... [2020-11-29 15:48:03,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 15:48:03,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 15:48:03,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 15:48:03,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 15:48:03,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:03" (1/1) ... [2020-11-29 15:48:03,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:03" (1/1) ... [2020-11-29 15:48:03,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:03" (1/1) ... [2020-11-29 15:48:03,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:03" (1/1) ... [2020-11-29 15:48:03,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:03" (1/1) ... [2020-11-29 15:48:03,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:03" (1/1) ... [2020-11-29 15:48:03,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:03" (1/1) ... [2020-11-29 15:48:03,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 15:48:03,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 15:48:03,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 15:48:03,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 15:48:03,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:03" (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 [2020-11-29 15:48:03,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 15:48:03,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 15:48:03,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 15:48:03,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 15:48:03,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 15:48:03,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 15:48:03,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 15:48:03,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 15:48:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-29 15:48:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 15:48:04,506 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 15:48:04,509 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-11-29 15:48:04,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:48:04 BoogieIcfgContainer [2020-11-29 15:48:04,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 15:48:04,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 15:48:04,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 15:48:04,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 15:48:04,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:48:03" (1/3) ... [2020-11-29 15:48:04,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6d9ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:48:04, skipping insertion in model container [2020-11-29 15:48:04,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:03" (2/3) ... [2020-11-29 15:48:04,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6d9ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:48:04, skipping insertion in model container [2020-11-29 15:48:04,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:48:04" (3/3) ... [2020-11-29 15:48:04,523 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121b.c [2020-11-29 15:48:04,542 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 15:48:04,547 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 15:48:04,561 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 15:48:04,605 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 15:48:04,605 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 15:48:04,605 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 15:48:04,605 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 15:48:04,605 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 15:48:04,606 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 15:48:04,606 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 15:48:04,606 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 15:48:04,625 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-11-29 15:48:04,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 15:48:04,630 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:48:04,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:48:04,632 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:48:04,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:48:04,639 INFO L82 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2020-11-29 15:48:04,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 15:48:04,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200490982] [2020-11-29 15:48:04,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 15:48:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:48:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:48:04,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200490982] [2020-11-29 15:48:04,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:48:04,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 15:48:04,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014729488] [2020-11-29 15:48:04,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 15:48:04,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 15:48:04,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 15:48:04,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 15:48:04,844 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-11-29 15:48:04,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:48:04,867 INFO L93 Difference]: Finished difference Result 83 states and 139 transitions. [2020-11-29 15:48:04,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 15:48:04,869 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 15:48:04,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:48:04,879 INFO L225 Difference]: With dead ends: 83 [2020-11-29 15:48:04,880 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 15:48:04,883 INFO L677 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 [2020-11-29 15:48:04,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 15:48:04,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-29 15:48:04,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 15:48:04,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2020-11-29 15:48:04,923 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2020-11-29 15:48:04,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:48:04,924 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2020-11-29 15:48:04,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 15:48:04,924 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2020-11-29 15:48:04,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 15:48:04,925 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:48:04,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:48:04,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 15:48:04,926 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:48:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:48:04,927 INFO L82 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2020-11-29 15:48:04,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 15:48:04,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087551511] [2020-11-29 15:48:04,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 15:48:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 15:48:05,006 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 15:48:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 15:48:05,054 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 15:48:05,101 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 15:48:05,102 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 15:48:05,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 15:48:05,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:48:05 BoogieIcfgContainer [2020-11-29 15:48:05,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 15:48:05,159 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 15:48:05,159 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 15:48:05,159 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 15:48:05,160 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:48:04" (3/4) ... [2020-11-29 15:48:05,162 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 15:48:05,162 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 15:48:05,165 INFO L168 Benchmark]: Toolchain (without parser) took 2036.98 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.4 MB in the beginning and 33.5 MB in the end (delta: -102.9 kB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2020-11-29 15:48:05,166 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 39.8 MB. Free memory was 17.7 MB in the beginning and 17.7 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:48:05,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.36 ms. Allocated memory is still 56.6 MB. Free memory was 32.9 MB in the beginning and 34.6 MB in the end (delta: -1.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-11-29 15:48:05,167 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.82 ms. Allocated memory is still 56.6 MB. Free memory was 34.4 MB in the beginning and 32.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:48:05,168 INFO L168 Benchmark]: Boogie Preprocessor took 77.37 ms. Allocated memory is still 56.6 MB. Free memory was 32.4 MB in the beginning and 30.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:48:05,169 INFO L168 Benchmark]: RCFGBuilder took 794.42 ms. Allocated memory is still 56.6 MB. Free memory was 30.7 MB in the beginning and 33.8 MB in the end (delta: -3.1 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2020-11-29 15:48:05,170 INFO L168 Benchmark]: TraceAbstraction took 643.86 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.4 MB in the beginning and 33.9 MB in the end (delta: -517.0 kB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:48:05,171 INFO L168 Benchmark]: Witness Printer took 3.87 ms. Allocated memory is still 69.2 MB. Free memory was 33.9 MB in the beginning and 33.5 MB in the end (delta: 364.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:48:05,176 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 39.8 MB. Free memory was 17.7 MB in the beginning and 17.7 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 428.36 ms. Allocated memory is still 56.6 MB. Free memory was 32.9 MB in the beginning and 34.6 MB in the end (delta: -1.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.82 ms. Allocated memory is still 56.6 MB. Free memory was 34.4 MB in the beginning and 32.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.37 ms. Allocated memory is still 56.6 MB. Free memory was 32.4 MB in the beginning and 30.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 794.42 ms. Allocated memory is still 56.6 MB. Free memory was 30.7 MB in the beginning and 33.8 MB in the end (delta: -3.1 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 643.86 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.4 MB in the beginning and 33.9 MB in the end (delta: -517.0 kB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.87 ms. Allocated memory is still 69.2 MB. Free memory was 33.9 MB in the beginning and 33.5 MB in the end (delta: 364.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 110, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someUnaryFLOAToperation at line 119, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L118] float x = __VERIFIER_nondet_float(); [L119] float y = -0.0f; [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [one_fmod=1, Zero_fmod={9:0}] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L120] float res = fmod_float(x, y); [L110] return x != x; VAL [one_fmod=1, Zero_fmod={9:0}] [L123] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1121b.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 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 DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-0e1a00c [2020-11-29 15:48:07,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 15:48:07,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 15:48:07,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 15:48:07,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 15:48:07,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 15:48:07,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 15:48:07,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 15:48:07,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 15:48:07,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 15:48:07,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 15:48:07,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 15:48:07,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 15:48:07,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 15:48:07,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 15:48:07,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 15:48:07,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 15:48:07,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 15:48:07,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 15:48:07,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 15:48:07,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 15:48:07,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 15:48:07,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 15:48:07,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 15:48:07,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 15:48:07,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 15:48:07,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 15:48:07,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 15:48:07,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 15:48:07,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 15:48:07,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 15:48:07,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 15:48:07,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 15:48:07,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 15:48:07,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 15:48:07,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 15:48:07,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 15:48:07,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 15:48:07,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 15:48:07,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 15:48:07,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 15:48:07,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 15:48:07,930 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 15:48:07,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 15:48:07,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 15:48:07,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 15:48:07,934 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 15:48:07,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 15:48:07,935 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 15:48:07,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 15:48:07,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 15:48:07,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 15:48:07,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 15:48:07,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 15:48:07,938 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 15:48:07,939 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 15:48:07,939 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 15:48:07,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 15:48:07,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 15:48:07,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 15:48:07,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 15:48:07,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 15:48:07,941 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 15:48:07,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 15:48:07,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 15:48:07,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 15:48:07,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 15:48:07,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 15:48:07,943 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 15:48:07,943 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 15:48:07,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 15:48:07,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 15:48:07,944 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 15:48:07,944 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc6ee66f7e92cd1fd8921d2fb3fed6eb54ee605f [2020-11-29 15:48:08,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 15:48:08,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 15:48:08,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 15:48:08,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 15:48:08,401 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 15:48:08,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121b.c [2020-11-29 15:48:08,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26d625828/533b89b937b745a6b0a5bf4541e4fe9c/FLAG714eec57a [2020-11-29 15:48:09,105 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 15:48:09,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1121b.c [2020-11-29 15:48:09,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26d625828/533b89b937b745a6b0a5bf4541e4fe9c/FLAG714eec57a [2020-11-29 15:48:09,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26d625828/533b89b937b745a6b0a5bf4541e4fe9c [2020-11-29 15:48:09,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 15:48:09,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 15:48:09,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 15:48:09,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 15:48:09,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 15:48:09,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:48:09" (1/1) ... [2020-11-29 15:48:09,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37003a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:09, skipping insertion in model container [2020-11-29 15:48:09,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:48:09" (1/1) ... [2020-11-29 15:48:09,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 15:48:09,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 15:48:09,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:48:09,854 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 15:48:09,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:48:09,916 INFO L208 MainTranslator]: Completed translation [2020-11-29 15:48:09,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:09 WrapperNode [2020-11-29 15:48:09,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 15:48:09,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 15:48:09,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 15:48:09,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 15:48:09,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:09" (1/1) ... [2020-11-29 15:48:09,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:09" (1/1) ... [2020-11-29 15:48:09,980 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 15:48:09,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 15:48:09,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 15:48:09,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 15:48:09,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:09" (1/1) ... [2020-11-29 15:48:09,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:09" (1/1) ... [2020-11-29 15:48:09,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:09" (1/1) ... [2020-11-29 15:48:09,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:09" (1/1) ... [2020-11-29 15:48:10,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:09" (1/1) ... [2020-11-29 15:48:10,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:09" (1/1) ... [2020-11-29 15:48:10,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:09" (1/1) ... [2020-11-29 15:48:10,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 15:48:10,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 15:48:10,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 15:48:10,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 15:48:10,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:09" (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 [2020-11-29 15:48:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-11-29 15:48:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 15:48:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 15:48:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-29 15:48:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 15:48:10,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 15:48:10,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 15:48:10,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-29 15:48:10,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 15:48:10,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 15:48:12,941 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 15:48:12,942 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-11-29 15:48:12,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:48:12 BoogieIcfgContainer [2020-11-29 15:48:12,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 15:48:12,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 15:48:12,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 15:48:12,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 15:48:12,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:48:09" (1/3) ... [2020-11-29 15:48:12,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf7a1b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:48:12, skipping insertion in model container [2020-11-29 15:48:12,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:48:09" (2/3) ... [2020-11-29 15:48:12,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf7a1b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:48:12, skipping insertion in model container [2020-11-29 15:48:12,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:48:12" (3/3) ... [2020-11-29 15:48:12,953 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121b.c [2020-11-29 15:48:12,968 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 15:48:12,972 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 15:48:12,983 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 15:48:13,008 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 15:48:13,009 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 15:48:13,009 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 15:48:13,009 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 15:48:13,009 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 15:48:13,009 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 15:48:13,010 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 15:48:13,010 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 15:48:13,024 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-11-29 15:48:13,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 15:48:13,030 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:48:13,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:48:13,031 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:48:13,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:48:13,038 INFO L82 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2020-11-29 15:48:13,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:48:13,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887480046] [2020-11-29 15:48:13,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 15:48:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:48:13,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 15:48:13,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:48:13,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:48:13,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:48:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:48:13,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887480046] [2020-11-29 15:48:13,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:48:13,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 15:48:13,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199031801] [2020-11-29 15:48:13,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 15:48:13,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:48:13,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 15:48:13,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 15:48:13,521 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-11-29 15:48:13,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:48:13,552 INFO L93 Difference]: Finished difference Result 83 states and 139 transitions. [2020-11-29 15:48:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 15:48:13,554 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 15:48:13,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:48:13,567 INFO L225 Difference]: With dead ends: 83 [2020-11-29 15:48:13,567 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 15:48:13,571 INFO L677 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 [2020-11-29 15:48:13,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 15:48:13,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-29 15:48:13,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 15:48:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2020-11-29 15:48:13,630 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2020-11-29 15:48:13,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:48:13,631 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2020-11-29 15:48:13,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 15:48:13,632 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2020-11-29 15:48:13,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 15:48:13,634 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:48:13,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:48:13,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 15:48:13,847 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:48:13,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:48:13,849 INFO L82 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2020-11-29 15:48:13,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:48:13,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763530830] [2020-11-29 15:48:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 15:48:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:48:14,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 15:48:14,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:48:16,631 WARN L197 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-11-29 15:48:18,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:48:18,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:48:22,473 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_float_~x (_ FloatingPoint 8 24))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_float_~x c_ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2020-11-29 15:48:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:48:22,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763530830] [2020-11-29 15:48:22,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:48:22,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-11-29 15:48:22,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373119563] [2020-11-29 15:48:22,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 15:48:22,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:48:22,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 15:48:22,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2020-11-29 15:48:22,758 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand 11 states. [2020-11-29 15:48:25,011 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_fmod_float_~y (fp.neg (_ +zero 8 24))) (forall ((ULTIMATE.start_fmod_float_~x (_ FloatingPoint 8 24))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_float_~x c_ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0))))) is different from true [2020-11-29 15:48:28,737 WARN L197 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-11-29 15:48:31,638 WARN L197 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2020-11-29 15:48:32,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:48:32,149 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-11-29 15:48:32,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 15:48:32,150 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-11-29 15:48:32,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:48:32,152 INFO L225 Difference]: With dead ends: 44 [2020-11-29 15:48:32,152 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 15:48:32,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=41, Invalid=97, Unknown=2, NotChecked=42, Total=182 [2020-11-29 15:48:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 15:48:32,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-29 15:48:32,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 15:48:32,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2020-11-29 15:48:32,160 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 12 [2020-11-29 15:48:32,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:48:32,160 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-11-29 15:48:32,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 15:48:32,161 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2020-11-29 15:48:32,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 15:48:32,162 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:48:32,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:48:32,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 15:48:32,363 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:48:32,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:48:32,365 INFO L82 PathProgramCache]: Analyzing trace with hash -302456811, now seen corresponding path program 1 times [2020-11-29 15:48:32,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:48:32,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302015783] [2020-11-29 15:48:32,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 15:48:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:48:32,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 15:48:32,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:48:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:48:32,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:48:32,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:48:32,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302015783] [2020-11-29 15:48:32,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:48:32,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-29 15:48:32,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030945807] [2020-11-29 15:48:32,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 15:48:32,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:48:32,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 15:48:32,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 15:48:32,807 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand 8 states. [2020-11-29 15:48:33,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:48:33,291 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2020-11-29 15:48:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 15:48:33,291 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-11-29 15:48:33,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:48:33,292 INFO L225 Difference]: With dead ends: 39 [2020-11-29 15:48:33,292 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 15:48:33,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-29 15:48:33,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 15:48:33,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 15:48:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 15:48:33,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 15:48:33,294 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-29 15:48:33,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:48:33,294 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 15:48:33,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 15:48:33,295 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 15:48:33,295 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 15:48:33,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 15:48:33,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 15:48:34,934 WARN L197 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 15:48:38,404 WARN L197 SmtUtils]: Spent 3.47 s on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2020-11-29 15:48:38,407 INFO L262 CegarLoopResult]: For program point L27(lines 27 31) no Hoare annotation was computed. [2020-11-29 15:48:38,408 INFO L262 CegarLoopResult]: For program point L60-1(lines 60 65) no Hoare annotation was computed. [2020-11-29 15:48:38,408 INFO L262 CegarLoopResult]: For program point L27-1(lines 19 107) no Hoare annotation was computed. [2020-11-29 15:48:38,408 INFO L262 CegarLoopResult]: For program point L27-2(lines 27 31) no Hoare annotation was computed. [2020-11-29 15:48:38,408 INFO L258 CegarLoopResult]: At program point L110(line 110) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((ULTIMATE.start_fmod_float_~x (_ FloatingPoint 8 24))) (= (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_fmod_float_~x (fp.neg (_ +zero 8 24))))) (fp.div roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start_fmod_float_#res|))) [2020-11-29 15:48:38,408 INFO L262 CegarLoopResult]: For program point L69(lines 69 75) no Hoare annotation was computed. [2020-11-29 15:48:38,408 INFO L262 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-11-29 15:48:38,409 INFO L258 CegarLoopResult]: At program point L69-2(lines 67 76) the Hoare annotation is: false [2020-11-29 15:48:38,409 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 15:48:38,409 INFO L262 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 15:48:38,409 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 15:48:38,409 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 15:48:38,409 INFO L262 CegarLoopResult]: For program point L78(lines 78 80) no Hoare annotation was computed. [2020-11-29 15:48:38,409 INFO L262 CegarLoopResult]: For program point L78-2(lines 19 107) no Hoare annotation was computed. [2020-11-29 15:48:38,410 INFO L265 CegarLoopResult]: At program point L128(lines 112 129) the Hoare annotation is: true [2020-11-29 15:48:38,410 INFO L262 CegarLoopResult]: For program point L54-1(lines 19 107) no Hoare annotation was computed. [2020-11-29 15:48:38,410 INFO L262 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2020-11-29 15:48:38,410 INFO L262 CegarLoopResult]: For program point L88(lines 88 105) no Hoare annotation was computed. [2020-11-29 15:48:38,410 INFO L262 CegarLoopResult]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2020-11-29 15:48:38,410 INFO L258 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start_fmod_float_~y (fp.neg (_ +zero 8 24)))) [2020-11-29 15:48:38,410 INFO L262 CegarLoopResult]: For program point L72(lines 72 73) no Hoare annotation was computed. [2020-11-29 15:48:38,410 INFO L262 CegarLoopResult]: For program point L48(lines 19 107) no Hoare annotation was computed. [2020-11-29 15:48:38,411 INFO L258 CegarLoopResult]: At program point L106(lines 19 107) the Hoare annotation is: (not (fp.eq |ULTIMATE.start_fmod_float_#res| |ULTIMATE.start_fmod_float_#res|)) [2020-11-29 15:48:38,411 INFO L262 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-11-29 15:48:38,411 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 15:48:38,411 INFO L262 CegarLoopResult]: For program point L123(lines 123 126) no Hoare annotation was computed. [2020-11-29 15:48:38,411 INFO L262 CegarLoopResult]: For program point L90-1(lines 90 94) no Hoare annotation was computed. [2020-11-29 15:48:38,411 INFO L258 CegarLoopResult]: At program point L90-2(lines 90 94) the Hoare annotation is: false [2020-11-29 15:48:38,411 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 15:48:38,411 INFO L262 CegarLoopResult]: For program point L49-2(lines 49 50) no Hoare annotation was computed. [2020-11-29 15:48:38,412 INFO L258 CegarLoopResult]: At program point L49-3(lines 49 50) the Hoare annotation is: false [2020-11-29 15:48:38,412 INFO L262 CegarLoopResult]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2020-11-29 15:48:38,412 INFO L258 CegarLoopResult]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2020-11-29 15:48:38,412 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 15:48:38,412 INFO L262 CegarLoopResult]: For program point L99-3(lines 99 103) no Hoare annotation was computed. [2020-11-29 15:48:38,412 INFO L262 CegarLoopResult]: For program point L42(lines 42 46) no Hoare annotation was computed. [2020-11-29 15:48:38,412 INFO L262 CegarLoopResult]: For program point L42-1(lines 19 107) no Hoare annotation was computed. [2020-11-29 15:48:38,412 INFO L262 CegarLoopResult]: For program point L67-1(lines 67 76) no Hoare annotation was computed. [2020-11-29 15:48:38,412 INFO L262 CegarLoopResult]: For program point L67-3(lines 67 76) no Hoare annotation was computed. [2020-11-29 15:48:38,413 INFO L258 CegarLoopResult]: At program point L84-2(lines 84 87) the Hoare annotation is: false [2020-11-29 15:48:38,413 INFO L262 CegarLoopResult]: For program point L84-3(lines 19 107) no Hoare annotation was computed. [2020-11-29 15:48:38,413 INFO L262 CegarLoopResult]: For program point L43-2(lines 43 44) no Hoare annotation was computed. [2020-11-29 15:48:38,413 INFO L258 CegarLoopResult]: At program point L43-3(lines 43 44) the Hoare annotation is: false [2020-11-29 15:48:38,427 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:48:38,429 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:48:38,429 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 15:48:38,429 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:48:38,429 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 15:48:38,430 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:48:38,431 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:48:38,431 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 15:48:38,431 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:48:38,431 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 15:48:38,432 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:48:38,433 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:48:38,434 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:48:38,434 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:48:38,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:48:38 BoogieIcfgContainer [2020-11-29 15:48:38,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 15:48:38,437 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 15:48:38,437 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 15:48:38,438 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 15:48:38,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:48:12" (3/4) ... [2020-11-29 15:48:38,442 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 15:48:38,454 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-29 15:48:38,454 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-29 15:48:38,454 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 15:48:38,455 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 15:48:38,496 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-11-29 15:48:38,496 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 15:48:38,498 INFO L168 Benchmark]: Toolchain (without parser) took 29019.98 ms. Allocated memory was 41.9 MB in the beginning and 62.9 MB in the end (delta: 21.0 MB). Free memory was 19.6 MB in the beginning and 34.8 MB in the end (delta: -15.2 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:48:38,498 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 41.9 MB. Free memory was 22.8 MB in the beginning and 22.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:48:38,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.47 ms. Allocated memory is still 41.9 MB. Free memory was 28.2 MB in the beginning and 15.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 15:48:38,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.26 ms. Allocated memory is still 52.4 MB. Free memory was 37.8 MB in the beginning and 35.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:48:38,500 INFO L168 Benchmark]: Boogie Preprocessor took 44.53 ms. Allocated memory is still 52.4 MB. Free memory was 35.9 MB in the beginning and 34.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:48:38,501 INFO L168 Benchmark]: RCFGBuilder took 2917.50 ms. Allocated memory is still 52.4 MB. Free memory was 33.8 MB in the beginning and 26.0 MB in the end (delta: 7.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 15:48:38,502 INFO L168 Benchmark]: TraceAbstraction took 25490.83 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 25.5 MB in the beginning and 37.5 MB in the end (delta: -12.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-11-29 15:48:38,503 INFO L168 Benchmark]: Witness Printer took 59.22 ms. Allocated memory is still 62.9 MB. Free memory was 37.5 MB in the beginning and 34.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 15:48:38,506 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 41.9 MB. Free memory was 22.8 MB in the beginning and 22.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 421.47 ms. Allocated memory is still 41.9 MB. Free memory was 28.2 MB in the beginning and 15.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.26 ms. Allocated memory is still 52.4 MB. Free memory was 37.8 MB in the beginning and 35.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.53 ms. Allocated memory is still 52.4 MB. Free memory was 35.9 MB in the beginning and 34.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2917.50 ms. Allocated memory is still 52.4 MB. Free memory was 33.8 MB in the beginning and 26.0 MB in the end (delta: 7.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25490.83 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 25.5 MB in the beginning and 37.5 MB in the end (delta: -12.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * Witness Printer took 59.22 ms. Allocated memory is still 62.9 MB. Free memory was 37.5 MB in the beginning and 34.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 19]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 112]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 110]: Loop Invariant [2020-11-29 15:48:38,520 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:48:38,520 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:48:38,520 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 15:48:38,520 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:48:38,521 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 15:48:38,521 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:48:38,521 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:48:38,522 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 15:48:38,522 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:48:38,522 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] Derived loop invariant: 1bv32 == \result && (\exists ULTIMATE.start_fmod_float_~x : C_FLOAT :: ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ULTIMATE.start_fmod_float_~x, ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())), ~fp.mul~FLOAT(~roundNearestTiesToEven, ULTIMATE.start_fmod_float_~x, ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()))) == \result) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant [2020-11-29 15:48:38,523 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:48:38,523 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:48:38,523 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:48:38,524 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 112 SDtfs, 6 SDslu, 267 SDs, 0 SdLazy, 31 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 16.7s 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 DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 38 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 23 FormulaSimplificationTreeSizeReductionInter, 4.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 11 QuantifiedInterpolants, 4137 SizeOfPredicates, 16 NumberOfNonLiveVariables, 196 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...