./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0920a.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_0920a.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 8aa1a92a1779a20f74a516c833d3b843eed96e54 ...................................................................................................................................................................................................................................................................................................................................................... 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_0920a.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 8aa1a92a1779a20f74a516c833d3b843eed96e54 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:22:00,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 15:22:00,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 15:22:00,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 15:22:00,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 15:22:00,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 15:22:00,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 15:22:00,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 15:22:00,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 15:22:00,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 15:22:00,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 15:22:00,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 15:22:00,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 15:22:00,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 15:22:00,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 15:22:00,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 15:22:00,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 15:22:00,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 15:22:00,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 15:22:00,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 15:22:00,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 15:22:00,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 15:22:00,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 15:22:00,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 15:22:00,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 15:22:00,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 15:22:00,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 15:22:00,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 15:22:00,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 15:22:00,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 15:22:00,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 15:22:00,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 15:22:00,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 15:22:00,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 15:22:00,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 15:22:00,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 15:22:00,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 15:22:00,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 15:22:00,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 15:22:00,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 15:22:00,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 15:22:00,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 15:22:00,642 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 15:22:00,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 15:22:00,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 15:22:00,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 15:22:00,647 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 15:22:00,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 15:22:00,647 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 15:22:00,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 15:22:00,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 15:22:00,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 15:22:00,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 15:22:00,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 15:22:00,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 15:22:00,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 15:22:00,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 15:22:00,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 15:22:00,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 15:22:00,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 15:22:00,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 15:22:00,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 15:22:00,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 15:22:00,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 15:22:00,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 15:22:00,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 15:22:00,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 15:22:00,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 15:22:00,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 15:22:00,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 15:22:00,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 15:22:00,653 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8aa1a92a1779a20f74a516c833d3b843eed96e54 [2020-11-29 15:22:01,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 15:22:01,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 15:22:01,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 15:22:01,146 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 15:22:01,147 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 15:22:01,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0920a.c [2020-11-29 15:22:01,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a244c32/be0a5213acc24b03abaa3fca148db566/FLAGa455473f2 [2020-11-29 15:22:01,816 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 15:22:01,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0920a.c [2020-11-29 15:22:01,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a244c32/be0a5213acc24b03abaa3fca148db566/FLAGa455473f2 [2020-11-29 15:22:02,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a244c32/be0a5213acc24b03abaa3fca148db566 [2020-11-29 15:22:02,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 15:22:02,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 15:22:02,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 15:22:02,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 15:22:02,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 15:22:02,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:22:02" (1/1) ... [2020-11-29 15:22:02,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e2d20b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:02, skipping insertion in model container [2020-11-29 15:22:02,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:22:02" (1/1) ... [2020-11-29 15:22:02,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 15:22:02,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 15:22:02,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:22:02,662 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 15:22:02,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:22:02,727 INFO L208 MainTranslator]: Completed translation [2020-11-29 15:22:02,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:02 WrapperNode [2020-11-29 15:22:02,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 15:22:02,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 15:22:02,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 15:22:02,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 15:22:02,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:02" (1/1) ... [2020-11-29 15:22:02,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:02" (1/1) ... [2020-11-29 15:22:02,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 15:22:02,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 15:22:02,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 15:22:02,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 15:22:02,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:02" (1/1) ... [2020-11-29 15:22:02,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:02" (1/1) ... [2020-11-29 15:22:02,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:02" (1/1) ... [2020-11-29 15:22:02,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:02" (1/1) ... [2020-11-29 15:22:02,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:02" (1/1) ... [2020-11-29 15:22:02,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:02" (1/1) ... [2020-11-29 15:22:02,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:02" (1/1) ... [2020-11-29 15:22:02,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 15:22:02,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 15:22:02,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 15:22:02,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 15:22:02,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:02" (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 15:22:02,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 15:22:02,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 15:22:02,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 15:22:02,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 15:22:02,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 15:22:02,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 15:22:02,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 15:22:02,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 15:22:02,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 15:22:03,548 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 15:22:03,548 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 15:22:03,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:22:03 BoogieIcfgContainer [2020-11-29 15:22:03,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 15:22:03,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 15:22:03,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 15:22:03,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 15:22:03,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:22:02" (1/3) ... [2020-11-29 15:22:03,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57199c75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:22:03, skipping insertion in model container [2020-11-29 15:22:03,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:02" (2/3) ... [2020-11-29 15:22:03,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57199c75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:22:03, skipping insertion in model container [2020-11-29 15:22:03,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:22:03" (3/3) ... [2020-11-29 15:22:03,564 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0920a.c [2020-11-29 15:22:03,580 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 15:22:03,585 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 15:22:03,598 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 15:22:03,629 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 15:22:03,630 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 15:22:03,630 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 15:22:03,630 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 15:22:03,630 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 15:22:03,630 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 15:22:03,630 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 15:22:03,630 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 15:22:03,653 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-29 15:22:03,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 15:22:03,662 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:22:03,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:22:03,664 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:22:03,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:22:03,673 INFO L82 PathProgramCache]: Analyzing trace with hash 627170052, now seen corresponding path program 1 times [2020-11-29 15:22:03,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 15:22:03,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527876238] [2020-11-29 15:22:03,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 15:22:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:22:03,922 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 15:22:03,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527876238] [2020-11-29 15:22:03,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:22:03,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 15:22:03,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658471241] [2020-11-29 15:22:03,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 15:22:03,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 15:22:03,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 15:22:03,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 15:22:03,958 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-11-29 15:22:03,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:22:03,981 INFO L93 Difference]: Finished difference Result 72 states and 113 transitions. [2020-11-29 15:22:03,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 15:22:03,983 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 15:22:03,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:22:03,994 INFO L225 Difference]: With dead ends: 72 [2020-11-29 15:22:03,994 INFO L226 Difference]: Without dead ends: 33 [2020-11-29 15:22:03,998 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 15:22:04,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-29 15:22:04,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-29 15:22:04,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 15:22:04,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2020-11-29 15:22:04,039 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 11 [2020-11-29 15:22:04,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:22:04,040 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2020-11-29 15:22:04,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 15:22:04,041 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2020-11-29 15:22:04,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 15:22:04,042 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:22:04,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:22:04,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 15:22:04,043 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:22:04,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:22:04,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1650641455, now seen corresponding path program 1 times [2020-11-29 15:22:04,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 15:22:04,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524886289] [2020-11-29 15:22:04,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 15:22:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:22:04,136 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 15:22:04,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524886289] [2020-11-29 15:22:04,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:22:04,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 15:22:04,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247768954] [2020-11-29 15:22:04,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 15:22:04,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 15:22:04,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 15:22:04,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 15:22:04,140 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 3 states. [2020-11-29 15:22:04,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:22:04,157 INFO L93 Difference]: Finished difference Result 59 states and 80 transitions. [2020-11-29 15:22:04,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 15:22:04,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-29 15:22:04,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:22:04,159 INFO L225 Difference]: With dead ends: 59 [2020-11-29 15:22:04,160 INFO L226 Difference]: Without dead ends: 33 [2020-11-29 15:22:04,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 15:22:04,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-29 15:22:04,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-29 15:22:04,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 15:22:04,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2020-11-29 15:22:04,167 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 12 [2020-11-29 15:22:04,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:22:04,167 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2020-11-29 15:22:04,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 15:22:04,168 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2020-11-29 15:22:04,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 15:22:04,168 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:22:04,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:22:04,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 15:22:04,169 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:22:04,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:22:04,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1227406364, now seen corresponding path program 1 times [2020-11-29 15:22:04,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 15:22:04,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661059222] [2020-11-29 15:22:04,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 15:22:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 15:22:04,232 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 15:22:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 15:22:04,280 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 15:22:04,317 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 15:22:04,318 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 15:22:04,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 15:22:04,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:22:04 BoogieIcfgContainer [2020-11-29 15:22:04,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 15:22:04,390 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 15:22:04,390 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 15:22:04,390 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 15:22:04,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:22:03" (3/4) ... [2020-11-29 15:22:04,399 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 15:22:04,399 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 15:22:04,404 INFO L168 Benchmark]: Toolchain (without parser) took 2216.46 ms. Allocated memory was 46.1 MB in the beginning and 71.3 MB in the end (delta: 25.2 MB). Free memory was 22.0 MB in the beginning and 52.5 MB in the end (delta: -30.5 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. [2020-11-29 15:22:04,405 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 46.1 MB. Free memory was 31.4 MB in the beginning and 31.4 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:22:04,407 INFO L168 Benchmark]: CACSL2BoogieTranslator took 515.97 ms. Allocated memory is still 58.7 MB. Free memory was 43.0 MB in the beginning and 30.8 MB in the end (delta: 12.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 15:22:04,407 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.87 ms. Allocated memory is still 58.7 MB. Free memory was 30.8 MB in the beginning and 28.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:22:04,411 INFO L168 Benchmark]: Boogie Preprocessor took 43.05 ms. Allocated memory is still 58.7 MB. Free memory was 28.9 MB in the beginning and 27.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:22:04,411 INFO L168 Benchmark]: RCFGBuilder took 718.75 ms. Allocated memory is still 58.7 MB. Free memory was 27.1 MB in the beginning and 36.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2020-11-29 15:22:04,412 INFO L168 Benchmark]: TraceAbstraction took 833.03 ms. Allocated memory is still 58.7 MB. Free memory was 35.5 MB in the beginning and 19.2 MB in the end (delta: 16.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2020-11-29 15:22:04,413 INFO L168 Benchmark]: Witness Printer took 9.48 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 19.2 MB in the beginning and 52.5 MB in the end (delta: -33.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:22:04,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 46.1 MB. Free memory was 31.4 MB in the beginning and 31.4 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 515.97 ms. Allocated memory is still 58.7 MB. Free memory was 43.0 MB in the beginning and 30.8 MB in the end (delta: 12.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.87 ms. Allocated memory is still 58.7 MB. Free memory was 30.8 MB in the beginning and 28.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.05 ms. Allocated memory is still 58.7 MB. Free memory was 28.9 MB in the beginning and 27.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 718.75 ms. Allocated memory is still 58.7 MB. Free memory was 27.1 MB in the beginning and 36.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 833.03 ms. Allocated memory is still 58.7 MB. Free memory was 35.5 MB in the beginning and 19.2 MB in the end (delta: 16.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. * Witness Printer took 9.48 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 19.2 MB in the beginning and 52.5 MB in the end (delta: -33.2 MB). Peak memory consumption was 2.1 MB. 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 113, overapproximation of bitwiseAnd at line 45, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L26-L30] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L32] static const float zero_log = 0.0; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L134] float x = __VERIFIER_nondet_float(); [L136] EXPR x < 0 && isfinite_float(x) [L117] __int32_t ix; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L119] ieee_float_shape_type gf_u; [L120] gf_u.value = (x) [L121] EXPR gf_u.word [L121] (ix) = gf_u.word [L123] ix &= 0x7fffffff [L124] return (((ix) < 0x7f800000L)); VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L136] EXPR x < 0 && isfinite_float(x) VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L136] COND TRUE (x < 0 && isfinite_float(x)) [L35] float hfsq, f, s, z, R, w, t1, t2, dk; [L36] __int32_t k, ix, i, j; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L39] ieee_float_shape_type gf_u; [L40] gf_u.value = (x) [L41] EXPR gf_u.word [L41] (ix) = gf_u.word [L44] k = 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L45] COND TRUE ((ix & 0x7fffffff) == 0) [L46] return -two25_log / zero_log; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L138] float res = __ieee754_logf(x); [L113] return x != x; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L141] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_0920a.c", 3, "reach_error") VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 0 SDslu, 39 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 232 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 15:22:06,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 15:22:06,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 15:22:06,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 15:22:06,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 15:22:06,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 15:22:06,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 15:22:06,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 15:22:06,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 15:22:06,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 15:22:06,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 15:22:06,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 15:22:06,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 15:22:06,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 15:22:06,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 15:22:06,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 15:22:06,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 15:22:06,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 15:22:07,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 15:22:07,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 15:22:07,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 15:22:07,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 15:22:07,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 15:22:07,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 15:22:07,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 15:22:07,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 15:22:07,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 15:22:07,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 15:22:07,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 15:22:07,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 15:22:07,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 15:22:07,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 15:22:07,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 15:22:07,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 15:22:07,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 15:22:07,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 15:22:07,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 15:22:07,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 15:22:07,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 15:22:07,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 15:22:07,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 15:22:07,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 15:22:07,073 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 15:22:07,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 15:22:07,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 15:22:07,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 15:22:07,077 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 15:22:07,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 15:22:07,078 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 15:22:07,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 15:22:07,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 15:22:07,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 15:22:07,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 15:22:07,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 15:22:07,080 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 15:22:07,081 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 15:22:07,081 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 15:22:07,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 15:22:07,081 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 15:22:07,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 15:22:07,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 15:22:07,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 15:22:07,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 15:22:07,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 15:22:07,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 15:22:07,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 15:22:07,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 15:22:07,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 15:22:07,084 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 15:22:07,085 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 15:22:07,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 15:22:07,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 15:22:07,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 15:22:07,086 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8aa1a92a1779a20f74a516c833d3b843eed96e54 [2020-11-29 15:22:07,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 15:22:07,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 15:22:07,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 15:22:07,563 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 15:22:07,563 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 15:22:07,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0920a.c [2020-11-29 15:22:07,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/122ac27c7/2fd906d6f39744c8890883b0c4f3f71a/FLAGc29fe9e7a [2020-11-29 15:22:08,199 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 15:22:08,200 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0920a.c [2020-11-29 15:22:08,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/122ac27c7/2fd906d6f39744c8890883b0c4f3f71a/FLAGc29fe9e7a [2020-11-29 15:22:08,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/122ac27c7/2fd906d6f39744c8890883b0c4f3f71a [2020-11-29 15:22:08,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 15:22:08,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 15:22:08,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 15:22:08,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 15:22:08,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 15:22:08,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:22:08" (1/1) ... [2020-11-29 15:22:08,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58077e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:08, skipping insertion in model container [2020-11-29 15:22:08,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:22:08" (1/1) ... [2020-11-29 15:22:08,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 15:22:08,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 15:22:08,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:22:08,912 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 15:22:08,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:22:09,026 INFO L208 MainTranslator]: Completed translation [2020-11-29 15:22:09,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:09 WrapperNode [2020-11-29 15:22:09,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 15:22:09,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 15:22:09,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 15:22:09,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 15:22:09,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:09" (1/1) ... [2020-11-29 15:22:09,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:09" (1/1) ... [2020-11-29 15:22:09,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 15:22:09,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 15:22:09,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 15:22:09,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 15:22:09,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:09" (1/1) ... [2020-11-29 15:22:09,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:09" (1/1) ... [2020-11-29 15:22:09,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:09" (1/1) ... [2020-11-29 15:22:09,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:09" (1/1) ... [2020-11-29 15:22:09,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:09" (1/1) ... [2020-11-29 15:22:09,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:09" (1/1) ... [2020-11-29 15:22:09,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:09" (1/1) ... [2020-11-29 15:22:09,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 15:22:09,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 15:22:09,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 15:22:09,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 15:22:09,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:09" (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 15:22:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 15:22:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 15:22:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-29 15:22:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 15:22:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 15:22:09,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 15:22:09,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-29 15:22:09,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 15:22:09,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 15:22:30,577 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 15:22:30,578 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 15:22:30,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:22:30 BoogieIcfgContainer [2020-11-29 15:22:30,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 15:22:30,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 15:22:30,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 15:22:30,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 15:22:30,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:22:08" (1/3) ... [2020-11-29 15:22:30,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16daa86f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:22:30, skipping insertion in model container [2020-11-29 15:22:30,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:22:09" (2/3) ... [2020-11-29 15:22:30,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16daa86f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:22:30, skipping insertion in model container [2020-11-29 15:22:30,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:22:30" (3/3) ... [2020-11-29 15:22:30,590 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0920a.c [2020-11-29 15:22:30,606 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 15:22:30,611 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 15:22:30,625 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 15:22:30,653 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 15:22:30,653 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 15:22:30,653 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 15:22:30,654 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 15:22:30,654 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 15:22:30,654 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 15:22:30,654 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 15:22:30,655 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 15:22:30,669 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-29 15:22:30,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 15:22:30,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:22:30,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:22:30,677 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:22:30,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:22:30,684 INFO L82 PathProgramCache]: Analyzing trace with hash 627170052, now seen corresponding path program 1 times [2020-11-29 15:22:30,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:22:30,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735346331] [2020-11-29 15:22:30,699 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 15:22:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:22:31,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 15:22:31,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:22:31,405 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 15:22:31,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:22:31,426 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 15:22:31,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735346331] [2020-11-29 15:22:31,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:22:31,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 15:22:31,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960360094] [2020-11-29 15:22:31,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 15:22:31,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:22:31,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 15:22:31,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 15:22:31,468 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-11-29 15:22:31,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:22:31,508 INFO L93 Difference]: Finished difference Result 72 states and 113 transitions. [2020-11-29 15:22:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 15:22:31,516 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 15:22:31,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:22:31,530 INFO L225 Difference]: With dead ends: 72 [2020-11-29 15:22:31,531 INFO L226 Difference]: Without dead ends: 33 [2020-11-29 15:22:31,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 15:22:31,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-29 15:22:31,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-29 15:22:31,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 15:22:31,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2020-11-29 15:22:31,572 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 11 [2020-11-29 15:22:31,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:22:31,573 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2020-11-29 15:22:31,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 15:22:31,574 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2020-11-29 15:22:31,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 15:22:31,574 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:22:31,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:22:31,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 15:22:31,781 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:22:31,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:22:31,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1650641455, now seen corresponding path program 1 times [2020-11-29 15:22:31,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:22:31,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885232077] [2020-11-29 15:22:31,786 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 15:22:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:22:32,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 15:22:32,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:22:32,383 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 15:22:32,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:22:32,406 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 15:22:32,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885232077] [2020-11-29 15:22:32,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:22:32,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-29 15:22:32,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335834591] [2020-11-29 15:22:32,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 15:22:32,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:22:32,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 15:22:32,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 15:22:32,410 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 3 states. [2020-11-29 15:22:32,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:22:32,491 INFO L93 Difference]: Finished difference Result 59 states and 80 transitions. [2020-11-29 15:22:32,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 15:22:32,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-29 15:22:32,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:22:32,493 INFO L225 Difference]: With dead ends: 59 [2020-11-29 15:22:32,493 INFO L226 Difference]: Without dead ends: 33 [2020-11-29 15:22:32,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 15:22:32,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-29 15:22:32,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-29 15:22:32,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 15:22:32,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2020-11-29 15:22:32,501 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 12 [2020-11-29 15:22:32,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:22:32,501 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2020-11-29 15:22:32,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 15:22:32,501 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2020-11-29 15:22:32,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 15:22:32,502 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:22:32,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:22:32,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 15:22:32,717 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:22:32,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:22:32,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1227406364, now seen corresponding path program 1 times [2020-11-29 15:22:32,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:22:32,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709833359] [2020-11-29 15:22:32,721 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 15:22:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:22:33,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 15:22:33,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:22:33,589 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-11-29 15:22:33,883 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 15:22:33,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:22:34,749 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 15:22:34,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709833359] [2020-11-29 15:22:34,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:22:34,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-29 15:22:34,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110466582] [2020-11-29 15:22:34,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 15:22:34,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:22:34,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 15:22:34,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-29 15:22:34,753 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand 10 states. [2020-11-29 15:22:35,142 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 8 [2020-11-29 15:22:37,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:22:37,625 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-11-29 15:22:37,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 15:22:37,668 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-11-29 15:22:37,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:22:37,669 INFO L225 Difference]: With dead ends: 38 [2020-11-29 15:22:37,669 INFO L226 Difference]: Without dead ends: 18 [2020-11-29 15:22:37,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-11-29 15:22:37,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-29 15:22:37,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-29 15:22:37,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 15:22:37,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-11-29 15:22:37,674 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2020-11-29 15:22:37,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:22:37,675 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-11-29 15:22:37,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 15:22:37,675 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-11-29 15:22:37,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 15:22:37,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:22:37,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:22:37,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 15:22:37,888 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:22:37,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:22:37,890 INFO L82 PathProgramCache]: Analyzing trace with hash -618100041, now seen corresponding path program 1 times [2020-11-29 15:22:37,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:22:37,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322515949] [2020-11-29 15:22:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 15:22:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:22:38,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 15:22:38,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:22:39,152 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 15:22:39,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:22:41,591 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start___ieee754_logf_~x (_ FloatingPoint 8 24))) (not (let ((.cse0 (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start___ieee754_logf_~x ULTIMATE.start___ieee754_logf_~x) c_~zero_log~0))) (fp.eq .cse0 .cse0)))) is different from true [2020-11-29 15:22:41,633 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 15:22:41,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322515949] [2020-11-29 15:22:41,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:22:41,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-29 15:22:41,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648907122] [2020-11-29 15:22:41,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 15:22:41,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:22:41,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 15:22:41,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=54, Unknown=1, NotChecked=14, Total=90 [2020-11-29 15:22:41,639 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 10 states. [2020-11-29 15:22:43,706 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((ULTIMATE.start___ieee754_logf_~x (_ FloatingPoint 8 24))) (not (let ((.cse0 (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start___ieee754_logf_~x ULTIMATE.start___ieee754_logf_~x) c_~zero_log~0))) (fp.eq .cse0 .cse0)))) (= ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) c_~zero_log~0)) is different from true [2020-11-29 15:22:44,405 WARN L197 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-11-29 15:22:45,029 WARN L197 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2020-11-29 15:22:45,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:22:45,031 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-11-29 15:22:45,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 15:22:45,031 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-11-29 15:22:45,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:22:45,032 INFO L225 Difference]: With dead ends: 18 [2020-11-29 15:22:45,032 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 15:22:45,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=38, Invalid=78, Unknown=2, NotChecked=38, Total=156 [2020-11-29 15:22:45,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 15:22:45,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 15:22:45,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 15:22:45,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 15:22:45,034 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-29 15:22:45,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:22:45,034 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 15:22:45,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 15:22:45,034 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 15:22:45,035 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 15:22:45,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 15:22:45,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 15:22:45,513 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 15:22:48,024 WARN L197 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2020-11-29 15:22:50,583 WARN L197 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2020-11-29 15:22:53,207 WARN L197 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2020-11-29 15:22:53,211 INFO L262 CegarLoopResult]: For program point L118-1(lines 118 122) no Hoare annotation was computed. [2020-11-29 15:22:53,211 INFO L258 CegarLoopResult]: At program point L118-2(lines 118 122) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short19| (= currentRoundingMode roundNearestTiesToEven) (exists ((v_prenex_4 RoundingMode)) (fp.lt ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) v_prenex_4 (_ bv0 32)))) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero_log~0)) [2020-11-29 15:22:53,211 INFO L262 CegarLoopResult]: For program point L118-3(lines 118 122) no Hoare annotation was computed. [2020-11-29 15:22:53,211 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 15:22:53,211 INFO L262 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 15:22:53,212 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 15:22:53,212 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 15:22:53,212 INFO L262 CegarLoopResult]: For program point L45(lines 45 46) no Hoare annotation was computed. [2020-11-29 15:22:53,212 INFO L262 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-11-29 15:22:53,212 INFO L262 CegarLoopResult]: For program point L136-2(lines 136 145) no Hoare annotation was computed. [2020-11-29 15:22:53,213 INFO L262 CegarLoopResult]: For program point L70(lines 70 86) no Hoare annotation was computed. [2020-11-29 15:22:53,213 INFO L262 CegarLoopResult]: For program point L136-4(lines 136 145) no Hoare annotation was computed. [2020-11-29 15:22:53,213 INFO L262 CegarLoopResult]: For program point L54-1(lines 54 58) no Hoare annotation was computed. [2020-11-29 15:22:53,213 INFO L258 CegarLoopResult]: At program point L54-2(lines 54 58) the Hoare annotation is: false [2020-11-29 15:22:53,213 INFO L262 CegarLoopResult]: For program point L71(lines 71 78) no Hoare annotation was computed. [2020-11-29 15:22:53,214 INFO L262 CegarLoopResult]: For program point L38-1(lines 38 42) no Hoare annotation was computed. [2020-11-29 15:22:53,214 INFO L258 CegarLoopResult]: At program point L38-2(lines 38 42) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((v_prenex_4 RoundingMode)) (fp.lt ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) v_prenex_4 (_ bv0 32)))) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero_log~0) (exists ((v_prenex_4 RoundingMode)) (fp.lt ULTIMATE.start___ieee754_logf_~x ((_ to_fp 8 24) v_prenex_4 (_ bv0 32))))) [2020-11-29 15:22:53,214 INFO L262 CegarLoopResult]: For program point L38-3(lines 38 42) no Hoare annotation was computed. [2020-11-29 15:22:53,214 INFO L262 CegarLoopResult]: For program point L63-1(lines 63 67) no Hoare annotation was computed. [2020-11-29 15:22:53,214 INFO L258 CegarLoopResult]: At program point L63-2(lines 63 67) the Hoare annotation is: false [2020-11-29 15:22:53,215 INFO L262 CegarLoopResult]: For program point L63-3(lines 63 67) no Hoare annotation was computed. [2020-11-29 15:22:53,215 INFO L258 CegarLoopResult]: At program point L113(line 113) the Hoare annotation is: (and (exists ((ULTIMATE.start___ieee754_logf_~x (_ FloatingPoint 8 24))) (= (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven ULTIMATE.start___ieee754_logf_~x ULTIMATE.start___ieee754_logf_~x) ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53))) |ULTIMATE.start___ieee754_logf_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2020-11-29 15:22:53,215 INFO L262 CegarLoopResult]: For program point L80(lines 80 85) no Hoare annotation was computed. [2020-11-29 15:22:53,215 INFO L262 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2020-11-29 15:22:53,216 INFO L262 CegarLoopResult]: For program point L105(lines 105 108) no Hoare annotation was computed. [2020-11-29 15:22:53,216 INFO L262 CegarLoopResult]: For program point L72(lines 72 77) no Hoare annotation was computed. [2020-11-29 15:22:53,216 INFO L262 CegarLoopResult]: For program point L97(lines 97 109) no Hoare annotation was computed. [2020-11-29 15:22:53,216 INFO L265 CegarLoopResult]: At program point L147(lines 127 148) the Hoare annotation is: true [2020-11-29 15:22:53,216 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 15:22:53,217 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 15:22:53,217 INFO L262 CegarLoopResult]: For program point L49(lines 49 50) no Hoare annotation was computed. [2020-11-29 15:22:53,217 INFO L262 CegarLoopResult]: For program point L99(lines 99 103) no Hoare annotation was computed. [2020-11-29 15:22:53,217 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 15:22:53,217 INFO L258 CegarLoopResult]: At program point L124(lines 116 125) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short19| (= currentRoundingMode roundNearestTiesToEven) (exists ((v_prenex_4 RoundingMode)) (fp.lt ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) v_prenex_4 (_ bv0 32)))) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero_log~0)) [2020-11-29 15:22:53,218 INFO L262 CegarLoopResult]: For program point L141(lines 141 144) no Hoare annotation was computed. [2020-11-29 15:22:53,218 INFO L258 CegarLoopResult]: At program point L108(lines 34 110) the Hoare annotation is: (not (fp.eq |ULTIMATE.start___ieee754_logf_#res| |ULTIMATE.start___ieee754_logf_#res|)) [2020-11-29 15:22:53,218 INFO L262 CegarLoopResult]: For program point L51(lines 51 59) no Hoare annotation was computed. [2020-11-29 15:22:53,218 INFO L262 CegarLoopResult]: For program point L51-1(lines 51 59) no Hoare annotation was computed. [2020-11-29 15:22:53,229 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,230 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,231 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-11-29 15:22:53,231 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-11-29 15:22:53,231 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,236 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,236 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,237 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-11-29 15:22:53,237 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-11-29 15:22:53,237 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,239 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,239 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-11-29 15:22:53,239 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,240 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,240 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,241 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-11-29 15:22:53,241 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,241 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,242 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,242 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-11-29 15:22:53,243 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,243 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,243 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,244 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-11-29 15:22:53,244 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,244 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,245 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,245 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-11-29 15:22:53,245 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-11-29 15:22:53,246 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,246 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,246 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,247 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-11-29 15:22:53,247 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-11-29 15:22:53,247 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,248 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:22:53 BoogieIcfgContainer [2020-11-29 15:22:53,250 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 15:22:53,251 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 15:22:53,251 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 15:22:53,251 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 15:22:53,252 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:22:30" (3/4) ... [2020-11-29 15:22:53,256 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 15:22:53,270 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-29 15:22:53,270 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-29 15:22:53,271 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 15:22:53,271 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 15:22:53,308 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((aux-x < 0 && isfinite_float(x)-aux && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log [2020-11-29 15:22:53,309 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((aux-x < 0 && isfinite_float(x)-aux && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log [2020-11-29 15:22:53,309 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32))) [2020-11-29 15:22:53,310 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(\result, \result) [2020-11-29 15:22:53,310 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists ULTIMATE.start___ieee754_logf_~x : C_FLOAT :: ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.sub~FLOAT(~roundNearestTiesToEven, ULTIMATE.start___ieee754_logf_~x, ULTIMATE.start___ieee754_logf_~x), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE())) == \result) && 1bv32 == \result [2020-11-29 15:22:53,378 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-11-29 15:22:53,381 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 15:22:53,383 INFO L168 Benchmark]: Toolchain (without parser) took 44799.62 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 29.4 MB in the beginning and 42.8 MB in the end (delta: -13.4 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. [2020-11-29 15:22:53,383 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 52.4 MB. Free memory was 33.9 MB in the beginning and 33.8 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:22:53,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.29 ms. Allocated memory is still 52.4 MB. Free memory was 28.7 MB in the beginning and 28.8 MB in the end (delta: -46.8 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-11-29 15:22:53,384 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.08 ms. Allocated memory is still 52.4 MB. Free memory was 28.8 MB in the beginning and 26.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:22:53,384 INFO L168 Benchmark]: Boogie Preprocessor took 84.99 ms. Allocated memory is still 52.4 MB. Free memory was 26.7 MB in the beginning and 24.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:22:53,385 INFO L168 Benchmark]: RCFGBuilder took 21357.83 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 24.6 MB in the beginning and 40.9 MB in the end (delta: -16.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2020-11-29 15:22:53,385 INFO L168 Benchmark]: TraceAbstraction took 22668.06 ms. Allocated memory is still 65.0 MB. Free memory was 40.6 MB in the beginning and 24.8 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2020-11-29 15:22:53,385 INFO L168 Benchmark]: Witness Printer took 130.18 ms. Allocated memory is still 65.0 MB. Free memory was 24.3 MB in the beginning and 42.8 MB in the end (delta: -18.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:22:53,388 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 52.4 MB. Free memory was 33.9 MB in the beginning and 33.8 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 434.29 ms. Allocated memory is still 52.4 MB. Free memory was 28.7 MB in the beginning and 28.8 MB in the end (delta: -46.8 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 105.08 ms. Allocated memory is still 52.4 MB. Free memory was 28.8 MB in the beginning and 26.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.99 ms. Allocated memory is still 52.4 MB. Free memory was 26.7 MB in the beginning and 24.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 21357.83 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 24.6 MB in the beginning and 40.9 MB in the end (delta: -16.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22668.06 ms. Allocated memory is still 65.0 MB. Free memory was 40.6 MB in the beginning and 24.8 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * Witness Printer took 130.18 ms. Allocated memory is still 65.0 MB. Free memory was 24.3 MB in the beginning and 42.8 MB in the end (delta: -18.5 MB). Peak memory consumption was 2.1 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___ieee754_logf_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~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 Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~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[v_prenex_4,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[v_prenex_4,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[v_prenex_4,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[v_prenex_4,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[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,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[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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: 113]: Loop Invariant [2020-11-29 15:22:53,402 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,402 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,402 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-11-29 15:22:53,402 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-11-29 15:22:53,402 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,404 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,404 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,404 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-11-29 15:22:53,404 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-11-29 15:22:53,404 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (\exists ULTIMATE.start___ieee754_logf_~x : C_FLOAT :: ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.sub~FLOAT(~roundNearestTiesToEven, ULTIMATE.start___ieee754_logf_~x, ULTIMATE.start___ieee754_logf_~x), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE())) == \result) && 1bv32 == \result - InvariantResult [Line: 116]: Loop Invariant [2020-11-29 15:22:53,405 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,405 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-11-29 15:22:53,405 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,405 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,406 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,406 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-11-29 15:22:53,407 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,407 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((aux-x < 0 && isfinite_float(x)-aux && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 118]: Loop Invariant [2020-11-29 15:22:53,408 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,408 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-11-29 15:22:53,413 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,413 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,419 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,419 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-11-29 15:22:53,420 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,420 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((aux-x < 0 && isfinite_float(x)-aux && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log - InvariantResult [Line: 38]: Loop Invariant [2020-11-29 15:22:53,420 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,421 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-11-29 15:22:53,421 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-11-29 15:22:53,421 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,421 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,421 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:22:53,422 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-11-29 15:22:53,422 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-11-29 15:22:53,423 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:22:53,423 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32))) - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 116 SDtfs, 17 SDslu, 100 SDs, 0 SdLazy, 25 SolverSat, 2 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 14 NumberOfFragments, 76 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 51 FormulaSimplificationTreeSizeReductionInter, 7.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 104 ConstructedInterpolants, 30 QuantifiedInterpolants, 9688 SizeOfPredicates, 17 NumberOfNonLiveVariables, 265 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...