./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0970a.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_0970a.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 88d3648b8ee059de01de6f913fc316c297763bb6 ........................................................................................................................................................................................................................................................................................................................................................... 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_0970a.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 88d3648b8ee059de01de6f913fc316c297763bb6 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:23:25,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 15:23:25,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 15:23:25,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 15:23:25,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 15:23:25,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 15:23:25,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 15:23:25,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 15:23:25,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 15:23:25,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 15:23:25,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 15:23:25,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 15:23:25,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 15:23:25,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 15:23:25,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 15:23:25,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 15:23:25,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 15:23:25,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 15:23:25,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 15:23:25,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 15:23:25,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 15:23:25,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 15:23:25,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 15:23:25,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 15:23:25,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 15:23:25,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 15:23:25,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 15:23:25,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 15:23:25,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 15:23:25,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 15:23:25,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 15:23:25,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 15:23:25,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 15:23:25,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 15:23:25,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 15:23:25,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 15:23:25,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 15:23:25,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 15:23:25,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 15:23:25,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 15:23:25,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 15:23:25,669 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 15:23:25,719 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 15:23:25,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 15:23:25,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 15:23:25,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 15:23:25,722 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 15:23:25,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 15:23:25,723 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 15:23:25,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 15:23:25,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 15:23:25,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 15:23:25,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 15:23:25,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 15:23:25,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 15:23:25,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 15:23:25,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 15:23:25,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 15:23:25,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 15:23:25,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 15:23:25,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 15:23:25,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 15:23:25,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 15:23:25,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 15:23:25,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 15:23:25,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 15:23:25,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 15:23:25,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 15:23:25,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 15:23:25,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 15:23:25,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 15:23:25,728 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88d3648b8ee059de01de6f913fc316c297763bb6 [2020-11-29 15:23:26,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 15:23:26,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 15:23:26,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 15:23:26,147 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 15:23:26,149 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 15:23:26,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0970a.c [2020-11-29 15:23:26,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad2e00d9/2af471a7da2a42e1a77015e07f703d98/FLAG13c8885f3 [2020-11-29 15:23:26,929 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 15:23:26,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0970a.c [2020-11-29 15:23:26,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad2e00d9/2af471a7da2a42e1a77015e07f703d98/FLAG13c8885f3 [2020-11-29 15:23:27,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad2e00d9/2af471a7da2a42e1a77015e07f703d98 [2020-11-29 15:23:27,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 15:23:27,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 15:23:27,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 15:23:27,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 15:23:27,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 15:23:27,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:23:27" (1/1) ... [2020-11-29 15:23:27,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2730a369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:27, skipping insertion in model container [2020-11-29 15:23:27,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:23:27" (1/1) ... [2020-11-29 15:23:27,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 15:23:27,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 15:23:27,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:23:27,635 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 15:23:27,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:23:27,731 INFO L208 MainTranslator]: Completed translation [2020-11-29 15:23:27,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:27 WrapperNode [2020-11-29 15:23:27,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 15:23:27,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 15:23:27,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 15:23:27,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 15:23:27,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:27" (1/1) ... [2020-11-29 15:23:27,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:27" (1/1) ... [2020-11-29 15:23:27,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 15:23:27,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 15:23:27,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 15:23:27,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 15:23:27,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:27" (1/1) ... [2020-11-29 15:23:27,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:27" (1/1) ... [2020-11-29 15:23:27,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:27" (1/1) ... [2020-11-29 15:23:27,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:27" (1/1) ... [2020-11-29 15:23:27,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:27" (1/1) ... [2020-11-29 15:23:27,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:27" (1/1) ... [2020-11-29 15:23:27,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:27" (1/1) ... [2020-11-29 15:23:27,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 15:23:27,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 15:23:27,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 15:23:27,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 15:23:27,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:27" (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 15:23:27,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 15:23:27,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 15:23:27,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 15:23:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 15:23:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 15:23:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 15:23:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 15:23:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 15:23:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 15:23:28,703 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 15:23:28,703 INFO L298 CfgBuilder]: Removed 28 assume(true) statements. [2020-11-29 15:23:28,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:23:28 BoogieIcfgContainer [2020-11-29 15:23:28,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 15:23:28,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 15:23:28,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 15:23:28,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 15:23:28,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:23:27" (1/3) ... [2020-11-29 15:23:28,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7041e9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:23:28, skipping insertion in model container [2020-11-29 15:23:28,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:27" (2/3) ... [2020-11-29 15:23:28,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7041e9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:23:28, skipping insertion in model container [2020-11-29 15:23:28,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:23:28" (3/3) ... [2020-11-29 15:23:28,715 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0970a.c [2020-11-29 15:23:28,735 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 15:23:28,740 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 15:23:28,755 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 15:23:28,807 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 15:23:28,808 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 15:23:28,808 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 15:23:28,808 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 15:23:28,808 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 15:23:28,809 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 15:23:28,809 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 15:23:28,809 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 15:23:28,834 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-11-29 15:23:28,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 15:23:28,859 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:23:28,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:23:28,860 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:23:28,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:23:28,868 INFO L82 PathProgramCache]: Analyzing trace with hash 629078660, now seen corresponding path program 1 times [2020-11-29 15:23:28,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 15:23:28,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223132234] [2020-11-29 15:23:28,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 15:23:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:23:29,069 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 15:23:29,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223132234] [2020-11-29 15:23:29,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:23:29,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 15:23:29,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586171173] [2020-11-29 15:23:29,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 15:23:29,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 15:23:29,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 15:23:29,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 15:23:29,097 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2020-11-29 15:23:29,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:23:29,127 INFO L93 Difference]: Finished difference Result 100 states and 161 transitions. [2020-11-29 15:23:29,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 15:23:29,129 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 15:23:29,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:23:29,144 INFO L225 Difference]: With dead ends: 100 [2020-11-29 15:23:29,145 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 15:23:29,148 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 15:23:29,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 15:23:29,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-29 15:23:29,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 15:23:29,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-11-29 15:23:29,196 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 11 [2020-11-29 15:23:29,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:23:29,197 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-11-29 15:23:29,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 15:23:29,197 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-11-29 15:23:29,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 15:23:29,198 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:23:29,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:23:29,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 15:23:29,199 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:23:29,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:23:29,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1648732847, now seen corresponding path program 1 times [2020-11-29 15:23:29,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 15:23:29,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499626194] [2020-11-29 15:23:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 15:23:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:23:29,281 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 15:23:29,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499626194] [2020-11-29 15:23:29,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:23:29,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 15:23:29,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419072111] [2020-11-29 15:23:29,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 15:23:29,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 15:23:29,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 15:23:29,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 15:23:29,286 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 3 states. [2020-11-29 15:23:29,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:23:29,333 INFO L93 Difference]: Finished difference Result 87 states and 116 transitions. [2020-11-29 15:23:29,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 15:23:29,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-29 15:23:29,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:23:29,337 INFO L225 Difference]: With dead ends: 87 [2020-11-29 15:23:29,337 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 15:23:29,339 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 15:23:29,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 15:23:29,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-29 15:23:29,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 15:23:29,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 61 transitions. [2020-11-29 15:23:29,365 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 61 transitions. Word has length 12 [2020-11-29 15:23:29,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:23:29,366 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 61 transitions. [2020-11-29 15:23:29,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 15:23:29,367 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 61 transitions. [2020-11-29 15:23:29,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 15:23:29,368 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:23:29,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:23:29,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 15:23:29,370 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:23:29,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:23:29,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1229314972, now seen corresponding path program 1 times [2020-11-29 15:23:29,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 15:23:29,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810912065] [2020-11-29 15:23:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 15:23:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 15:23:29,477 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 15:23:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 15:23:29,561 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 15:23:29,632 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 15:23:29,633 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 15:23:29,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 15:23:29,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:23:29 BoogieIcfgContainer [2020-11-29 15:23:29,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 15:23:29,733 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 15:23:29,733 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 15:23:29,733 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 15:23:29,734 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:23:28" (3/4) ... [2020-11-29 15:23:29,738 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 15:23:29,738 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 15:23:29,742 INFO L168 Benchmark]: Toolchain (without parser) took 2480.76 ms. Allocated memory was 44.0 MB in the beginning and 75.5 MB in the end (delta: 31.5 MB). Free memory was 20.2 MB in the beginning and 47.2 MB in the end (delta: -27.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-11-29 15:23:29,744 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 44.0 MB. Free memory was 29.3 MB in the beginning and 29.2 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:23:29,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 462.95 ms. Allocated memory was 44.0 MB in the beginning and 60.8 MB in the end (delta: 16.8 MB). Free memory was 19.5 MB in the beginning and 32.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-11-29 15:23:29,746 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.80 ms. Allocated memory is still 60.8 MB. Free memory was 32.4 MB in the beginning and 30.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:23:29,746 INFO L168 Benchmark]: Boogie Preprocessor took 55.63 ms. Allocated memory is still 60.8 MB. Free memory was 30.0 MB in the beginning and 43.2 MB in the end (delta: -13.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 15:23:29,747 INFO L168 Benchmark]: RCFGBuilder took 853.03 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 30.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2020-11-29 15:23:29,748 INFO L168 Benchmark]: TraceAbstraction took 1025.08 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 30.1 MB in the beginning and 47.6 MB in the end (delta: -17.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:23:29,749 INFO L168 Benchmark]: Witness Printer took 5.79 ms. Allocated memory is still 75.5 MB. Free memory was 47.6 MB in the beginning and 47.2 MB in the end (delta: 420.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:23:29,754 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 44.0 MB. Free memory was 29.3 MB in the beginning and 29.2 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 462.95 ms. Allocated memory was 44.0 MB in the beginning and 60.8 MB in the end (delta: 16.8 MB). Free memory was 19.5 MB in the beginning and 32.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.80 ms. Allocated memory is still 60.8 MB. Free memory was 32.4 MB in the beginning and 30.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.63 ms. Allocated memory is still 60.8 MB. Free memory was 30.0 MB in the beginning and 43.2 MB in the end (delta: -13.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 853.03 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 30.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1025.08 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 30.1 MB in the beginning and 47.6 MB in the end (delta: -17.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.79 ms. Allocated memory is still 75.5 MB. Free memory was 47.6 MB in the beginning and 47.2 MB in the end (delta: 420.2 kB). 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 147, overapproximation of bitwiseAnd at line 118, overapproximation of someBinaryArithmeticFLOAToperation at line 119. Possible FailurePath: [L14-L18] 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; [L20] static const float zero_log = 0.0; [L100-L103] static const float two25_log10 = 3.3554432000e+07, ivln10_log10 = 4.3429449201e-01, log10_2hi_log10 = 3.0102920532e-01, log10_2lo_log10 = 7.9034151668e-07; [L105] static const float zero = 0.0; VAL [ivln10_log10=43429449201/100000000000, 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, log10_2hi_log10=7525730133/25000000000, log10_2lo_log10=19758537917/25000000000000000, two25_log=33554432, two25_log10=33554432, zero=0, zero_log=0] [L168] float x = __VERIFIER_nondet_float(); [L170] x < 0 && isfinite_float(x) [L151] __int32_t ix; VAL [ivln10_log10=43429449201/100000000000, 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, log10_2hi_log10=7525730133/25000000000, log10_2lo_log10=19758537917/25000000000000000, two25_log=33554432, two25_log10=33554432, zero=0, zero_log=0] [L153] ieee_float_shape_type gf_u; [L154] gf_u.value = (x) [L155] EXPR gf_u.word [L155] (ix) = gf_u.word [L157] ix &= 0x7fffffff [L158] return (((ix) < 0x7f800000L)); VAL [ivln10_log10=43429449201/100000000000, 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, log10_2hi_log10=7525730133/25000000000, log10_2lo_log10=19758537917/25000000000000000, two25_log=33554432, two25_log10=33554432, zero=0, zero_log=0] [L170] x < 0 && isfinite_float(x) VAL [ivln10_log10=43429449201/100000000000, 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, log10_2hi_log10=7525730133/25000000000, log10_2lo_log10=19758537917/25000000000000000, two25_log=33554432, two25_log10=33554432, zero=0, zero_log=0] [L170] COND TRUE x < 0 && isfinite_float(x) [L108] float y, z; [L109] __int32_t i, k, hx; VAL [ivln10_log10=43429449201/100000000000, 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, log10_2hi_log10=7525730133/25000000000, log10_2lo_log10=19758537917/25000000000000000, two25_log=33554432, two25_log10=33554432, zero=0, zero_log=0] [L112] ieee_float_shape_type gf_u; [L113] gf_u.value = (x) [L114] EXPR gf_u.word [L114] (hx) = gf_u.word [L117] k = 0 VAL [ivln10_log10=43429449201/100000000000, 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, log10_2hi_log10=7525730133/25000000000, log10_2lo_log10=19758537917/25000000000000000, two25_log=33554432, two25_log10=33554432, zero=0, zero_log=0] [L118] COND TRUE ((hx & 0x7fffffff) == 0) [L119] return -two25_log10 / zero; VAL [ivln10_log10=43429449201/100000000000, 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, log10_2hi_log10=7525730133/25000000000, log10_2lo_log10=19758537917/25000000000000000, two25_log=33554432, two25_log10=33554432, zero=0, zero_log=0] [L172] float res = __ieee754_log10f(x); [L147] return x != x; VAL [ivln10_log10=43429449201/100000000000, 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, log10_2hi_log10=7525730133/25000000000, log10_2lo_log10=19758537917/25000000000000000, two25_log=33554432, two25_log10=33554432, zero=0, zero_log=0] [L175] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_0970a.c", 3, "reach_error") VAL [ivln10_log10=43429449201/100000000000, 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, log10_2hi_log10=7525730133/25000000000, log10_2lo_log10=19758537917/25000000000000000, two25_log=33554432, two25_log10=33554432, zero=0, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 57 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=52occurred 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, 0.0s 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 15:23:32,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 15:23:32,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 15:23:32,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 15:23:32,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 15:23:32,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 15:23:32,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 15:23:32,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 15:23:32,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 15:23:32,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 15:23:32,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 15:23:32,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 15:23:32,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 15:23:32,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 15:23:32,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 15:23:32,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 15:23:32,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 15:23:32,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 15:23:32,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 15:23:32,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 15:23:32,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 15:23:32,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 15:23:32,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 15:23:32,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 15:23:32,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 15:23:32,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 15:23:32,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 15:23:32,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 15:23:32,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 15:23:32,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 15:23:32,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 15:23:32,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 15:23:32,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 15:23:32,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 15:23:32,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 15:23:32,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 15:23:32,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 15:23:32,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 15:23:32,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 15:23:32,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 15:23:32,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 15:23:32,589 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 15:23:32,618 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 15:23:32,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 15:23:32,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 15:23:32,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 15:23:32,621 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 15:23:32,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 15:23:32,621 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 15:23:32,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 15:23:32,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 15:23:32,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 15:23:32,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 15:23:32,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 15:23:32,623 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 15:23:32,623 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 15:23:32,624 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 15:23:32,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 15:23:32,624 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 15:23:32,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 15:23:32,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 15:23:32,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 15:23:32,626 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 15:23:32,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 15:23:32,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 15:23:32,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 15:23:32,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 15:23:32,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 15:23:32,627 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 15:23:32,628 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 15:23:32,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 15:23:32,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 15:23:32,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 15:23:32,629 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88d3648b8ee059de01de6f913fc316c297763bb6 [2020-11-29 15:23:33,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 15:23:33,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 15:23:33,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 15:23:33,126 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 15:23:33,127 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 15:23:33,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0970a.c [2020-11-29 15:23:33,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/882094d64/25eeb1b2eb3b4e5fb5e22ab26ead3205/FLAG21ecc22a2 [2020-11-29 15:23:33,932 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 15:23:33,933 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0970a.c [2020-11-29 15:23:33,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/882094d64/25eeb1b2eb3b4e5fb5e22ab26ead3205/FLAG21ecc22a2 [2020-11-29 15:23:34,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/882094d64/25eeb1b2eb3b4e5fb5e22ab26ead3205 [2020-11-29 15:23:34,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 15:23:34,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 15:23:34,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 15:23:34,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 15:23:34,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 15:23:34,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:23:34" (1/1) ... [2020-11-29 15:23:34,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5418dd0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:34, skipping insertion in model container [2020-11-29 15:23:34,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:23:34" (1/1) ... [2020-11-29 15:23:34,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 15:23:34,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 15:23:34,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:23:34,635 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 15:23:34,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:23:34,767 INFO L208 MainTranslator]: Completed translation [2020-11-29 15:23:34,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:34 WrapperNode [2020-11-29 15:23:34,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 15:23:34,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 15:23:34,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 15:23:34,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 15:23:34,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:34" (1/1) ... [2020-11-29 15:23:34,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:34" (1/1) ... [2020-11-29 15:23:34,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 15:23:34,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 15:23:34,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 15:23:34,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 15:23:34,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:34" (1/1) ... [2020-11-29 15:23:34,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:34" (1/1) ... [2020-11-29 15:23:34,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:34" (1/1) ... [2020-11-29 15:23:34,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:34" (1/1) ... [2020-11-29 15:23:34,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:34" (1/1) ... [2020-11-29 15:23:35,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:34" (1/1) ... [2020-11-29 15:23:35,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:34" (1/1) ... [2020-11-29 15:23:35,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 15:23:35,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 15:23:35,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 15:23:35,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 15:23:35,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:34" (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 15:23:35,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 15:23:35,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 15:23:35,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-29 15:23:35,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 15:23:35,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 15:23:35,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 15:23:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-29 15:23:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 15:23:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 15:24:03,904 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 15:24:03,905 INFO L298 CfgBuilder]: Removed 28 assume(true) statements. [2020-11-29 15:24:03,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:24:03 BoogieIcfgContainer [2020-11-29 15:24:03,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 15:24:03,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 15:24:03,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 15:24:03,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 15:24:03,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:23:34" (1/3) ... [2020-11-29 15:24:03,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c7d5f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:24:03, skipping insertion in model container [2020-11-29 15:24:03,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:34" (2/3) ... [2020-11-29 15:24:03,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c7d5f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:24:03, skipping insertion in model container [2020-11-29 15:24:03,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:24:03" (3/3) ... [2020-11-29 15:24:03,918 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0970a.c [2020-11-29 15:24:03,935 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 15:24:03,939 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 15:24:03,961 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 15:24:03,990 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 15:24:03,990 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 15:24:03,990 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 15:24:03,991 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 15:24:03,991 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 15:24:03,991 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 15:24:03,991 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 15:24:03,991 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 15:24:04,007 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-11-29 15:24:04,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 15:24:04,013 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:24:04,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:24:04,015 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:24:04,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:24:04,022 INFO L82 PathProgramCache]: Analyzing trace with hash 629078660, now seen corresponding path program 1 times [2020-11-29 15:24:04,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:24:04,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550265592] [2020-11-29 15:24:04,038 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 15:24:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:24:05,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 15:24:05,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:24:05,122 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 15:24:05,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:24:05,156 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 15:24:05,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550265592] [2020-11-29 15:24:05,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:24:05,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 15:24:05,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578523220] [2020-11-29 15:24:05,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 15:24:05,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:24:05,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 15:24:05,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 15:24:05,221 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2020-11-29 15:24:05,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:24:05,261 INFO L93 Difference]: Finished difference Result 100 states and 161 transitions. [2020-11-29 15:24:05,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 15:24:05,263 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 15:24:05,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:24:05,277 INFO L225 Difference]: With dead ends: 100 [2020-11-29 15:24:05,277 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 15:24:05,283 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 15:24:05,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 15:24:05,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-29 15:24:05,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 15:24:05,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-11-29 15:24:05,342 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 11 [2020-11-29 15:24:05,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:24:05,345 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-11-29 15:24:05,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 15:24:05,346 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-11-29 15:24:05,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 15:24:05,347 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:24:05,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:24:05,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 15:24:05,561 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:24:05,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:24:05,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1648732847, now seen corresponding path program 1 times [2020-11-29 15:24:05,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:24:05,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297526535] [2020-11-29 15:24:05,565 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 15:24:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:24:06,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 15:24:06,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:24:06,269 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 15:24:06,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:24:06,282 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 15:24:06,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297526535] [2020-11-29 15:24:06,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:24:06,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-29 15:24:06,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519346119] [2020-11-29 15:24:06,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 15:24:06,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:24:06,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 15:24:06,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 15:24:06,287 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 3 states. [2020-11-29 15:24:06,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:24:06,354 INFO L93 Difference]: Finished difference Result 87 states and 116 transitions. [2020-11-29 15:24:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 15:24:06,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-29 15:24:06,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:24:06,356 INFO L225 Difference]: With dead ends: 87 [2020-11-29 15:24:06,356 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 15:24:06,358 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 15:24:06,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 15:24:06,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-29 15:24:06,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 15:24:06,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 61 transitions. [2020-11-29 15:24:06,365 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 61 transitions. Word has length 12 [2020-11-29 15:24:06,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:24:06,366 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 61 transitions. [2020-11-29 15:24:06,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 15:24:06,366 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 61 transitions. [2020-11-29 15:24:06,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 15:24:06,367 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:24:06,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:24:06,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 15:24:06,582 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:24:06,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:24:06,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1229314972, now seen corresponding path program 1 times [2020-11-29 15:24:06,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:24:06,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188096440] [2020-11-29 15:24:06,586 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 15:24:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:24:07,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 15:24:07,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:24:07,500 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-11-29 15:24:07,785 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 15:24:07,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:24:08,579 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 15:24:08,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188096440] [2020-11-29 15:24:08,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:24:08,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-29 15:24:08,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603876153] [2020-11-29 15:24:08,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 15:24:08,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:24:08,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 15:24:08,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-29 15:24:08,583 INFO L87 Difference]: Start difference. First operand 47 states and 61 transitions. Second operand 10 states. [2020-11-29 15:24:09,465 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 8 [2020-11-29 15:24:11,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:24:11,917 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-11-29 15:24:11,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 15:24:11,956 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-11-29 15:24:11,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:24:11,956 INFO L225 Difference]: With dead ends: 52 [2020-11-29 15:24:11,957 INFO L226 Difference]: Without dead ends: 18 [2020-11-29 15:24:11,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-11-29 15:24:11,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-29 15:24:11,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-29 15:24:11,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 15:24:11,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-11-29 15:24:11,962 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2020-11-29 15:24:11,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:24:11,962 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-11-29 15:24:11,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 15:24:11,963 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-11-29 15:24:11,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 15:24:11,963 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:24:11,964 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 15:24:12,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 15:24:12,174 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:24:12,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:24:12,175 INFO L82 PathProgramCache]: Analyzing trace with hash -616191433, now seen corresponding path program 1 times [2020-11-29 15:24:12,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:24:12,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474285566] [2020-11-29 15:24:12,177 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 15:24:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:24:12,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 15:24:12,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:24:13,566 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 15:24:13,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:24:16,059 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start___ieee754_log10f_~x (_ FloatingPoint 8 24))) (not (let ((.cse0 (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start___ieee754_log10f_~x ULTIMATE.start___ieee754_log10f_~x) c_~zero~0))) (fp.eq .cse0 .cse0)))) is different from true [2020-11-29 15:24:16,099 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 15:24:16,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474285566] [2020-11-29 15:24:16,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:24:16,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-29 15:24:16,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977815220] [2020-11-29 15:24:16,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 15:24:16,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:24:16,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 15:24:16,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=54, Unknown=1, NotChecked=14, Total=90 [2020-11-29 15:24:16,104 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 10 states. [2020-11-29 15:24:18,171 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((ULTIMATE.start___ieee754_log10f_~x (_ FloatingPoint 8 24))) (not (let ((.cse0 (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start___ieee754_log10f_~x ULTIMATE.start___ieee754_log10f_~x) c_~zero~0))) (fp.eq .cse0 .cse0)))) (= c_~zero~0 ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)))) is different from true [2020-11-29 15:24:18,763 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 7 [2020-11-29 15:24:19,211 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2020-11-29 15:24:19,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:24:19,213 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-11-29 15:24:19,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 15:24:19,213 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-11-29 15:24:19,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:24:19,214 INFO L225 Difference]: With dead ends: 18 [2020-11-29 15:24:19,214 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 15:24:19,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=38, Invalid=78, Unknown=2, NotChecked=38, Total=156 [2020-11-29 15:24:19,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 15:24:19,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 15:24:19,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 15:24:19,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 15:24:19,216 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-29 15:24:19,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:24:19,217 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 15:24:19,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 15:24:19,217 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 15:24:19,217 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 15:24:19,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 15:24:19,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 15:24:22,237 WARN L197 SmtUtils]: Spent 2.73 s on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2020-11-29 15:24:24,940 WARN L197 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2020-11-29 15:24:27,535 WARN L197 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2020-11-29 15:24:27,539 INFO L262 CegarLoopResult]: For program point L93(lines 93 96) no Hoare annotation was computed. [2020-11-29 15:24:27,539 INFO L262 CegarLoopResult]: For program point L60(lines 60 65) no Hoare annotation was computed. [2020-11-29 15:24:27,539 INFO L262 CegarLoopResult]: For program point L118(lines 118 119) no Hoare annotation was computed. [2020-11-29 15:24:27,539 INFO L262 CegarLoopResult]: For program point L85(lines 85 97) no Hoare annotation was computed. [2020-11-29 15:24:27,540 INFO L258 CegarLoopResult]: At program point L143(lines 107 144) the Hoare annotation is: (not (fp.eq |ULTIMATE.start___ieee754_log10f_#res| |ULTIMATE.start___ieee754_log10f_#res|)) [2020-11-29 15:24:27,540 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 15:24:27,540 INFO L262 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 15:24:27,540 INFO L262 CegarLoopResult]: For program point L127-1(lines 127 131) no Hoare annotation was computed. [2020-11-29 15:24:27,540 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 15:24:27,540 INFO L258 CegarLoopResult]: At program point L127-2(lines 127 131) the Hoare annotation is: false [2020-11-29 15:24:27,540 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 15:24:27,540 INFO L262 CegarLoopResult]: For program point L152-1(lines 152 156) no Hoare annotation was computed. [2020-11-29 15:24:27,541 INFO L258 CegarLoopResult]: At program point L152-2(lines 152 156) the Hoare annotation is: (and (exists ((v_prenex_6 RoundingMode)) (fp.lt ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) v_prenex_6 (_ bv0 32)))) (= currentRoundingMode roundNearestTiesToEven) |ULTIMATE.start_main_#t~short24| (= ~zero~0 ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)))) [2020-11-29 15:24:27,541 INFO L262 CegarLoopResult]: For program point L152-3(lines 152 156) no Hoare annotation was computed. [2020-11-29 15:24:27,541 INFO L262 CegarLoopResult]: For program point L111-1(lines 111 115) no Hoare annotation was computed. [2020-11-29 15:24:27,541 INFO L258 CegarLoopResult]: At program point L111-2(lines 111 115) the Hoare annotation is: (and (exists ((v_prenex_6 RoundingMode)) (fp.lt ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) v_prenex_6 (_ bv0 32)))) (= currentRoundingMode roundNearestTiesToEven) (exists ((v_prenex_6 RoundingMode)) (fp.lt ULTIMATE.start___ieee754_log10f_~x ((_ to_fp 8 24) v_prenex_6 (_ bv0 32)))) (= ~zero~0 ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)))) [2020-11-29 15:24:27,548 INFO L262 CegarLoopResult]: For program point L111-3(lines 111 115) no Hoare annotation was computed. [2020-11-29 15:24:27,548 INFO L262 CegarLoopResult]: For program point L37(lines 37 38) no Hoare annotation was computed. [2020-11-29 15:24:27,548 INFO L262 CegarLoopResult]: For program point L120(lines 120 121) no Hoare annotation was computed. [2020-11-29 15:24:27,548 INFO L262 CegarLoopResult]: For program point L87(lines 87 91) no Hoare annotation was computed. [2020-11-29 15:24:27,549 INFO L262 CegarLoopResult]: For program point L170(line 170) no Hoare annotation was computed. [2020-11-29 15:24:27,549 INFO L262 CegarLoopResult]: For program point L170-2(lines 170 179) no Hoare annotation was computed. [2020-11-29 15:24:27,549 INFO L262 CegarLoopResult]: For program point L137-1(lines 137 141) no Hoare annotation was computed. [2020-11-29 15:24:27,549 INFO L258 CegarLoopResult]: At program point L137-2(lines 137 141) the Hoare annotation is: false [2020-11-29 15:24:27,549 INFO L262 CegarLoopResult]: For program point L137-3(lines 137 141) no Hoare annotation was computed. [2020-11-29 15:24:27,550 INFO L262 CegarLoopResult]: For program point L170-4(lines 170 179) no Hoare annotation was computed. [2020-11-29 15:24:27,550 INFO L258 CegarLoopResult]: At program point L96(lines 22 98) the Hoare annotation is: false [2020-11-29 15:24:27,550 INFO L262 CegarLoopResult]: For program point L39(lines 39 47) no Hoare annotation was computed. [2020-11-29 15:24:27,550 INFO L262 CegarLoopResult]: For program point L39-1(lines 39 47) no Hoare annotation was computed. [2020-11-29 15:24:27,550 INFO L262 CegarLoopResult]: For program point L122(lines 122 123) no Hoare annotation was computed. [2020-11-29 15:24:27,551 INFO L258 CegarLoopResult]: At program point L147(line 147) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq |ULTIMATE.start___ieee754_log10f_#res| |ULTIMATE.start___ieee754_log10f_#res|))) [2020-11-29 15:24:27,551 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 15:24:27,551 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 15:24:27,551 INFO L265 CegarLoopResult]: At program point L181(lines 161 182) the Hoare annotation is: true [2020-11-29 15:24:27,552 INFO L262 CegarLoopResult]: For program point L33(lines 33 34) no Hoare annotation was computed. [2020-11-29 15:24:27,552 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 15:24:27,552 INFO L262 CegarLoopResult]: For program point L124(lines 124 132) no Hoare annotation was computed. [2020-11-29 15:24:27,552 INFO L262 CegarLoopResult]: For program point L124-1(lines 124 132) no Hoare annotation was computed. [2020-11-29 15:24:27,552 INFO L262 CegarLoopResult]: For program point L58(lines 58 74) no Hoare annotation was computed. [2020-11-29 15:24:27,553 INFO L262 CegarLoopResult]: For program point L42-1(lines 42 46) no Hoare annotation was computed. [2020-11-29 15:24:27,553 INFO L258 CegarLoopResult]: At program point L42-2(lines 42 46) the Hoare annotation is: false [2020-11-29 15:24:27,553 INFO L258 CegarLoopResult]: At program point L158(lines 150 159) the Hoare annotation is: (and (exists ((v_prenex_6 RoundingMode)) (fp.lt ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) v_prenex_6 (_ bv0 32)))) (= currentRoundingMode roundNearestTiesToEven) |ULTIMATE.start_main_#t~short24| (= ~zero~0 ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)))) [2020-11-29 15:24:27,553 INFO L262 CegarLoopResult]: For program point L59(lines 59 66) no Hoare annotation was computed. [2020-11-29 15:24:27,553 INFO L262 CegarLoopResult]: For program point L26-1(lines 26 30) no Hoare annotation was computed. [2020-11-29 15:24:27,554 INFO L258 CegarLoopResult]: At program point L26-2(lines 26 30) the Hoare annotation is: false [2020-11-29 15:24:27,554 INFO L262 CegarLoopResult]: For program point L26-3(lines 26 30) no Hoare annotation was computed. [2020-11-29 15:24:27,554 INFO L262 CegarLoopResult]: For program point L51-1(lines 51 55) no Hoare annotation was computed. [2020-11-29 15:24:27,554 INFO L258 CegarLoopResult]: At program point L51-2(lines 51 55) the Hoare annotation is: false [2020-11-29 15:24:27,554 INFO L262 CegarLoopResult]: For program point L51-3(lines 51 55) no Hoare annotation was computed. [2020-11-29 15:24:27,555 INFO L262 CegarLoopResult]: For program point L175(lines 175 178) no Hoare annotation was computed. [2020-11-29 15:24:27,555 INFO L262 CegarLoopResult]: For program point L68(lines 68 73) no Hoare annotation was computed. [2020-11-29 15:24:27,555 INFO L262 CegarLoopResult]: For program point L35(lines 35 36) no Hoare annotation was computed. [2020-11-29 15:24:27,571 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,QUANTIFIED] [2020-11-29 15:24:27,573 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:24:27,573 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,574 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,578 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,QUANTIFIED] [2020-11-29 15:24:27,578 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:24:27,579 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,579 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,581 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,QUANTIFIED] [2020-11-29 15:24:27,582 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:24:27,582 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,QUANTIFIED] [2020-11-29 15:24:27,583 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,583 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,583 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,QUANTIFIED] [2020-11-29 15:24:27,585 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:24:27,585 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,QUANTIFIED] [2020-11-29 15:24:27,586 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,586 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,587 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,QUANTIFIED] [2020-11-29 15:24:27,588 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:24:27,589 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,589 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,590 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,QUANTIFIED] [2020-11-29 15:24:27,590 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:24:27,590 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,591 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:24:27 BoogieIcfgContainer [2020-11-29 15:24:27,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 15:24:27,594 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 15:24:27,594 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 15:24:27,595 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 15:24:27,595 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:24:03" (3/4) ... [2020-11-29 15:24:27,602 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 15:24:27,623 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2020-11-29 15:24:27,624 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-29 15:24:27,625 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 15:24:27,625 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 15:24:27,666 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\exists v_prenex_6 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_6, 0bv32))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && aux-x < 0 && isfinite_float(x)-aux) && zero == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) [2020-11-29 15:24:27,667 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\exists v_prenex_6 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_6, 0bv32))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists v_prenex_6 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_6, 0bv32)))) && zero == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) [2020-11-29 15:24:27,668 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\exists v_prenex_6 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_6, 0bv32))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && aux-x < 0 && isfinite_float(x)-aux) && zero == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) [2020-11-29 15:24:27,669 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(\result, \result) [2020-11-29 15:24:27,670 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 1bv32 == \result && !~fp.eq~FLOAT(\result, \result) [2020-11-29 15:24:27,776 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-11-29 15:24:27,777 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 15:24:27,778 INFO L168 Benchmark]: Toolchain (without parser) took 53482.67 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 25.7 MB in the beginning and 31.8 MB in the end (delta: -6.1 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-11-29 15:24:27,779 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 48.2 MB. Free memory was 30.3 MB in the beginning and 30.3 MB in the end (delta: 33.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:24:27,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.49 ms. Allocated memory is still 48.2 MB. Free memory was 25.0 MB in the beginning and 21.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 15:24:27,780 INFO L168 Benchmark]: Boogie Procedure Inliner took 136.13 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 21.6 MB in the beginning and 43.6 MB in the end (delta: -22.0 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-11-29 15:24:27,780 INFO L168 Benchmark]: Boogie Preprocessor took 118.37 ms. Allocated memory is still 60.8 MB. Free memory was 43.6 MB in the beginning and 41.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:24:27,781 INFO L168 Benchmark]: RCFGBuilder took 28880.28 ms. Allocated memory is still 60.8 MB. Free memory was 41.3 MB in the beginning and 26.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 15:24:27,781 INFO L168 Benchmark]: TraceAbstraction took 23684.09 ms. Allocated memory is still 60.8 MB. Free memory was 26.3 MB in the beginning and 38.1 MB in the end (delta: -11.8 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2020-11-29 15:24:27,782 INFO L168 Benchmark]: Witness Printer took 182.58 ms. Allocated memory is still 60.8 MB. Free memory was 38.1 MB in the beginning and 31.8 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 15:24:27,785 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 48.2 MB. Free memory was 30.3 MB in the beginning and 30.3 MB in the end (delta: 33.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 465.49 ms. Allocated memory is still 48.2 MB. Free memory was 25.0 MB in the beginning and 21.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 136.13 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 21.6 MB in the beginning and 43.6 MB in the end (delta: -22.0 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 118.37 ms. Allocated memory is still 60.8 MB. Free memory was 43.6 MB in the beginning and 41.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 28880.28 ms. Allocated memory is still 60.8 MB. Free memory was 41.3 MB in the beginning and 26.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 23684.09 ms. Allocated memory is still 60.8 MB. Free memory was 26.3 MB in the beginning and 38.1 MB in the end (delta: -11.8 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * Witness Printer took 182.58 ms. Allocated memory is still 60.8 MB. Free memory was 38.1 MB in the beginning and 31.8 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,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_6,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_6,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_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,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_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,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_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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: 107]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 161]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 152]: Loop Invariant [2020-11-29 15:24:27,805 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,QUANTIFIED] [2020-11-29 15:24:27,805 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:24:27,805 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,806 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,807 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,QUANTIFIED] [2020-11-29 15:24:27,808 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:24:27,808 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,808 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (((\exists v_prenex_6 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_6, 0bv32))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && aux-x < 0 && isfinite_float(x)-aux) && zero == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 111]: Loop Invariant [2020-11-29 15:24:27,811 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,QUANTIFIED] [2020-11-29 15:24:27,814 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:24:27,814 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,QUANTIFIED] [2020-11-29 15:24:27,814 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,815 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,815 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,QUANTIFIED] [2020-11-29 15:24:27,816 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:24:27,816 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,QUANTIFIED] [2020-11-29 15:24:27,817 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,817 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (((\exists v_prenex_6 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_6, 0bv32))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists v_prenex_6 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_6, 0bv32)))) && zero == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 147]: Loop Invariant Derived loop invariant: 1bv32 == \result && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 150]: Loop Invariant [2020-11-29 15:24:27,831 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,QUANTIFIED] [2020-11-29 15:24:27,832 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:24:27,832 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,833 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,834 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_6,QUANTIFIED] [2020-11-29 15:24:27,834 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:24:27,835 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:24:27,835 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (((\exists v_prenex_6 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_6, 0bv32))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && aux-x < 0 && isfinite_float(x)-aux) && zero == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 152 SDtfs, 21 SDslu, 113 SDs, 0 SdLazy, 25 SolverSat, 2 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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, 12 LocationsWithAnnotation, 12 PreInvPairs, 18 NumberOfFragments, 72 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 51 FormulaSimplificationTreeSizeReductionInter, 8.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 104 ConstructedInterpolants, 30 QuantifiedInterpolants, 9688 SizeOfPredicates, 17 NumberOfNonLiveVariables, 285 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...