./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0684a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_0684a.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 fb0116da05ed0aea6f031fec744ef2f88983c7a5 ............................................................................................................................................................................................................................................................................................................................... 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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_0684a.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 fb0116da05ed0aea6f031fec744ef2f88983c7a5 ....................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:36:32,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:36:32,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:36:32,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:36:32,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:36:32,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:36:32,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:36:32,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:36:32,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:36:32,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:36:32,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:36:32,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:36:32,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:36:32,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:36:32,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:36:32,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:36:32,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:36:32,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:36:32,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:36:32,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:36:32,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:36:32,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:36:32,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:36:32,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:36:32,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:36:32,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:36:32,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:36:32,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:36:32,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:36:32,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:36:32,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:36:32,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:36:32,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:36:32,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:36:32,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:36:32,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:36:32,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:36:32,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:36:32,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:36:32,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:36:32,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:36:32,764 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:36:32,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:36:32,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:36:32,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:36:32,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:36:32,804 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:36:32,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:36:32,804 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:36:32,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:36:32,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:36:32,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:36:32,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:36:32,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:36:32,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:36:32,805 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:36:32,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:36:32,806 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:36:32,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:36:32,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:36:32,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:36:32,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:36:32,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:36:32,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:36:32,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:36:32,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:36:32,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:36:32,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:36:32,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:36:32,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:36:32,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:36:32,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(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 -> fb0116da05ed0aea6f031fec744ef2f88983c7a5 [2020-10-20 00:36:33,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:36:33,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:36:33,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:36:33,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:36:33,069 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:36:33,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0684a.c [2020-10-20 00:36:33,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83545bece/ff10b8047c44476f9005c6423b8d7f7d/FLAG8f055fb61 [2020-10-20 00:36:33,771 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:36:33,772 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0684a.c [2020-10-20 00:36:33,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83545bece/ff10b8047c44476f9005c6423b8d7f7d/FLAG8f055fb61 [2020-10-20 00:36:34,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83545bece/ff10b8047c44476f9005c6423b8d7f7d [2020-10-20 00:36:34,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:36:34,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:36:34,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:36:34,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:36:34,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:36:34,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:36:34" (1/1) ... [2020-10-20 00:36:34,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cafc818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:34, skipping insertion in model container [2020-10-20 00:36:34,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:36:34" (1/1) ... [2020-10-20 00:36:34,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:36:34,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:36:34,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:36:34,501 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:36:34,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:36:34,591 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:36:34,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:34 WrapperNode [2020-10-20 00:36:34,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:36:34,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:36:34,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:36:34,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:36:34,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:34" (1/1) ... [2020-10-20 00:36:34,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:34" (1/1) ... [2020-10-20 00:36:34,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:36:34,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:36:34,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:36:34,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:36:34,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:34" (1/1) ... [2020-10-20 00:36:34,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:34" (1/1) ... [2020-10-20 00:36:34,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:34" (1/1) ... [2020-10-20 00:36:34,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:34" (1/1) ... [2020-10-20 00:36:34,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:34" (1/1) ... [2020-10-20 00:36:34,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:34" (1/1) ... [2020-10-20 00:36:34,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:34" (1/1) ... [2020-10-20 00:36:34,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:36:34,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:36:34,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:36:34,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:36:34,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:34" (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 [2020-10-20 00:36:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:36:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:36:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:36:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:36:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:36:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:36:34,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:36:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:36:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-20 00:36:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:36:35,653 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:36:35,654 INFO L298 CfgBuilder]: Removed 46 assume(true) statements. [2020-10-20 00:36:35,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:36:35 BoogieIcfgContainer [2020-10-20 00:36:35,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:36:35,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:36:35,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:36:35,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:36:35,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:36:34" (1/3) ... [2020-10-20 00:36:35,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13add8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:36:35, skipping insertion in model container [2020-10-20 00:36:35,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:34" (2/3) ... [2020-10-20 00:36:35,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13add8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:36:35, skipping insertion in model container [2020-10-20 00:36:35,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:36:35" (3/3) ... [2020-10-20 00:36:35,667 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0684a.c [2020-10-20 00:36:35,695 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:36:35,710 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:36:35,729 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:36:35,758 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:36:35,758 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:36:35,758 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:36:35,758 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:36:35,775 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:36:35,775 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:36:35,775 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:36:35,775 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:36:35,798 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-10-20 00:36:35,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:36:35,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:36:35,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:36:35,806 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:36:35,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:36:35,814 INFO L82 PathProgramCache]: Analyzing trace with hash -701283450, now seen corresponding path program 1 times [2020-10-20 00:36:35,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:36:35,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883111743] [2020-10-20 00:36:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:36:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:36:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:36:36,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883111743] [2020-10-20 00:36:36,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:36:36,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:36:36,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017910269] [2020-10-20 00:36:36,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:36:36,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:36:36,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:36:36,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:36:36,062 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 2 states. [2020-10-20 00:36:36,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:36:36,097 INFO L93 Difference]: Finished difference Result 229 states and 381 transitions. [2020-10-20 00:36:36,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:36:36,099 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-10-20 00:36:36,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:36:36,112 INFO L225 Difference]: With dead ends: 229 [2020-10-20 00:36:36,113 INFO L226 Difference]: Without dead ends: 111 [2020-10-20 00:36:36,117 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 [2020-10-20 00:36:36,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-20 00:36:36,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-10-20 00:36:36,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-20 00:36:36,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2020-10-20 00:36:36,162 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 14 [2020-10-20 00:36:36,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:36:36,162 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2020-10-20 00:36:36,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:36:36,163 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2020-10-20 00:36:36,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 00:36:36,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:36:36,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:36:36,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:36:36,164 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:36:36,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:36:36,165 INFO L82 PathProgramCache]: Analyzing trace with hash 69437810, now seen corresponding path program 1 times [2020-10-20 00:36:36,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:36:36,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395419583] [2020-10-20 00:36:36,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:36:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:36:36,362 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:36:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:36:36,491 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:36:36,556 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:36:36,557 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:36:36,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:36:36,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:36:36 BoogieIcfgContainer [2020-10-20 00:36:36,655 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:36:36,656 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:36:36,656 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:36:36,656 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:36:36,657 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:36:35" (3/4) ... [2020-10-20 00:36:36,661 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:36:36,661 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:36:36,664 INFO L168 Benchmark]: Toolchain (without parser) took 2521.69 ms. Allocated memory was 43.0 MB in the beginning and 50.3 MB in the end (delta: 7.3 MB). Free memory was 22.6 MB in the beginning and 7.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:36:36,665 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 32.5 MB. Free memory was 11.2 MB in the beginning and 11.2 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-20 00:36:36,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.43 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 21.8 MB in the beginning and 17.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:36:36,667 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.01 ms. Allocated memory is still 43.5 MB. Free memory was 17.5 MB in the beginning and 13.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:36:36,668 INFO L168 Benchmark]: Boogie Preprocessor took 91.14 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 13.8 MB in the beginning and 27.7 MB in the end (delta: -14.0 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:36:36,669 INFO L168 Benchmark]: RCFGBuilder took 890.87 ms. Allocated memory was 45.6 MB in the beginning and 48.8 MB in the end (delta: 3.1 MB). Free memory was 27.5 MB in the beginning and 15.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:36:36,670 INFO L168 Benchmark]: TraceAbstraction took 997.00 ms. Allocated memory was 48.8 MB in the beginning and 50.3 MB in the end (delta: 1.6 MB). Free memory was 15.0 MB in the beginning and 8.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:36:36,671 INFO L168 Benchmark]: Witness Printer took 5.55 ms. Allocated memory is still 50.3 MB. Free memory was 8.3 MB in the beginning and 7.9 MB in the end (delta: 403.4 kB). Peak memory consumption was 403.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:36:36,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 32.5 MB. Free memory was 11.2 MB in the beginning and 11.2 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 444.43 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 21.8 MB in the beginning and 17.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 82.01 ms. Allocated memory is still 43.5 MB. Free memory was 17.5 MB in the beginning and 13.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 91.14 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 13.8 MB in the beginning and 27.7 MB in the end (delta: -14.0 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 890.87 ms. Allocated memory was 45.6 MB in the beginning and 48.8 MB in the end (delta: 3.1 MB). Free memory was 27.5 MB in the beginning and 15.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 997.00 ms. Allocated memory was 48.8 MB in the beginning and 50.3 MB in the end (delta: 1.6 MB). Free memory was 15.0 MB in the beginning and 8.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. * Witness Printer took 5.55 ms. Allocated memory is still 50.3 MB. Free memory was 8.3 MB in the beginning and 7.9 MB in the end (delta: 403.4 kB). Peak memory consumption was 403.4 kB. Max. memory is 14.3 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 245, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 135, overapproximation of someBinaryArithmeticFLOAToperation at line 137. Possible FailurePath: [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L117-L118] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, zero_atan2=0] [L236] float x = __VERIFIER_nondet_float(); [L237] float y = 1.0f / 0.0f; [L219] __int32_t ix; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, zero_atan2=0] [L221] ieee_float_shape_type gf_u; [L222] gf_u.value = (x) [L223] EXPR gf_u.word [L223] (ix) = gf_u.word [L225] ix &= 0x7fffffff [L226] return (((ix) < 0x7f800000L)); VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, zero_atan2=0] [L240] COND TRUE isfinite_float(x) [L121] float z; [L122] __int32_t k, m, hx, hy, ix, iy; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, zero_atan2=0] [L125] ieee_float_shape_type gf_u; [L126] gf_u.value = (x) [L127] EXPR gf_u.word [L127] (hx) = gf_u.word [L129] ix = hx & 0x7fffffff VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, zero_atan2=0] [L131] ieee_float_shape_type gf_u; [L132] gf_u.value = (y) [L133] EXPR gf_u.word [L133] (hy) = gf_u.word [L135] iy = hy & 0x7fffffff VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, zero_atan2=0] [L136] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L137] return x + y; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, zero_atan2=0] [L242] float res = __ieee754_atan2f(y, x); [L245] COND TRUE res != pi_o_2 VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, zero_atan2=0] [L3] __assert_fail("0", "float_req_bl_0684a.c", 3, "reach_error") VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 116 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 164 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:36:38,943 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-20 00:36:39,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:36:39,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:36:39,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:36:39,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:36:39,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:36:39,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:36:39,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:36:39,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:36:39,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:36:39,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:36:39,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:36:39,039 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:36:39,086 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:36:39,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:36:39,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:36:39,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:36:39,091 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:36:39,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:36:39,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:36:39,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:36:39,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:36:39,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:36:39,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:36:39,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:36:39,094 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:36:39,094 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:36:39,094 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:36:39,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:36:39,095 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:36:39,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:36:39,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:36:39,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:36:39,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:36:39,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:36:39,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:36:39,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:36:39,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:36:39,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:36:39,097 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:36:39,098 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:36:39,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:36:39,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:36:39,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:36:39,099 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(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 -> fb0116da05ed0aea6f031fec744ef2f88983c7a5 [2020-10-20 00:36:39,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:36:39,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:36:39,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:36:39,355 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:36:39,356 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:36:39,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0684a.c [2020-10-20 00:36:39,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecb403e14/673254914a894db59beda201bdfc1347/FLAG4db7817d1 [2020-10-20 00:36:40,000 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:36:40,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0684a.c [2020-10-20 00:36:40,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecb403e14/673254914a894db59beda201bdfc1347/FLAG4db7817d1 [2020-10-20 00:36:40,299 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecb403e14/673254914a894db59beda201bdfc1347 [2020-10-20 00:36:40,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:36:40,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:36:40,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:36:40,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:36:40,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:36:40,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:36:40" (1/1) ... [2020-10-20 00:36:40,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3577a696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:40, skipping insertion in model container [2020-10-20 00:36:40,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:36:40" (1/1) ... [2020-10-20 00:36:40,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:36:40,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:36:40,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:36:40,758 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:36:40,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:36:40,858 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:36:40,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:40 WrapperNode [2020-10-20 00:36:40,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:36:40,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:36:40,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:36:40,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:36:40,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:40" (1/1) ... [2020-10-20 00:36:40,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:40" (1/1) ... [2020-10-20 00:36:40,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:36:40,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:36:40,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:36:40,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:36:40,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:40" (1/1) ... [2020-10-20 00:36:40,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:40" (1/1) ... [2020-10-20 00:36:40,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:40" (1/1) ... [2020-10-20 00:36:40,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:40" (1/1) ... [2020-10-20 00:36:41,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:40" (1/1) ... [2020-10-20 00:36:41,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:40" (1/1) ... [2020-10-20 00:36:41,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:40" (1/1) ... [2020-10-20 00:36:41,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:36:41,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:36:41,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:36:41,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:36:41,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:40" (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 [2020-10-20 00:36:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-10-20 00:36:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:36:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:36:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-10-20 00:36:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:36:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:36:41,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:36:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-20 00:36:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:36:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:36:59,248 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:36:59,248 INFO L298 CfgBuilder]: Removed 46 assume(true) statements. [2020-10-20 00:36:59,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:36:59 BoogieIcfgContainer [2020-10-20 00:36:59,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:36:59,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:36:59,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:36:59,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:36:59,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:36:40" (1/3) ... [2020-10-20 00:36:59,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5901a4b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:36:59, skipping insertion in model container [2020-10-20 00:36:59,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:40" (2/3) ... [2020-10-20 00:36:59,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5901a4b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:36:59, skipping insertion in model container [2020-10-20 00:36:59,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:36:59" (3/3) ... [2020-10-20 00:36:59,259 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0684a.c [2020-10-20 00:36:59,270 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:36:59,278 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:36:59,290 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:36:59,315 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:36:59,315 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:36:59,315 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:36:59,316 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:36:59,316 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:36:59,316 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:36:59,316 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:36:59,316 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:36:59,336 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-10-20 00:36:59,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:36:59,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:36:59,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:36:59,345 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:36:59,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:36:59,352 INFO L82 PathProgramCache]: Analyzing trace with hash -701283450, now seen corresponding path program 1 times [2020-10-20 00:36:59,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:36:59,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410983080] [2020-10-20 00:36:59,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 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 [2020-10-20 00:37:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:37:00,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:37:00,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:37:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:37:00,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:37:00,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:37:00,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410983080] [2020-10-20 00:37:00,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:37:00,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:37:00,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680990983] [2020-10-20 00:37:00,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:37:00,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:37:00,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:37:00,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:37:00,374 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 2 states. [2020-10-20 00:37:00,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:37:00,408 INFO L93 Difference]: Finished difference Result 229 states and 381 transitions. [2020-10-20 00:37:00,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:37:00,409 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-10-20 00:37:00,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:37:00,431 INFO L225 Difference]: With dead ends: 229 [2020-10-20 00:37:00,432 INFO L226 Difference]: Without dead ends: 111 [2020-10-20 00:37:00,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:37:00,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-20 00:37:00,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-10-20 00:37:00,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-20 00:37:00,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2020-10-20 00:37:00,480 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 14 [2020-10-20 00:37:00,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:37:00,481 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2020-10-20 00:37:00,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:37:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2020-10-20 00:37:00,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 00:37:00,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:37:00,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:37:00,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:37:00,684 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:37:00,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:37:00,685 INFO L82 PathProgramCache]: Analyzing trace with hash 69437810, now seen corresponding path program 1 times [2020-10-20 00:37:00,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:37:00,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400525348] [2020-10-20 00:37:00,687 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 [2020-10-20 00:37:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:37:01,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-20 00:37:01,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:37:01,997 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:37:02,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400525348] [2020-10-20 00:37:02,254 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:37:02,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [894134064] [2020-10-20 00:37:02,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 00:37:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:37:08,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-20 00:37:08,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:37:08,410 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:37:08,551 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:37:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:37:09,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:37:09,287 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 00:37:09,496 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 00:37:09,929 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 00:37:09,931 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:37:09,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452336780] [2020-10-20 00:37:09,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:37:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:37:10,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-20 00:37:10,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:37:10,144 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:37:10,270 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:37:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:37:10,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:37:10,340 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 00:37:10,456 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 00:37:10,599 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 00:37:10,600 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:37:10,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:37:10,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 00:37:10,601 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 00:37:10,601 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:37:11,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,3 mathsat -unsat_core_generation=3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:37:11,243 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 00:37:11,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:37:11 BoogieIcfgContainer [2020-10-20 00:37:11,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:37:11,244 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:37:11,244 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:37:11,244 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:37:11,245 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:36:59" (3/4) ... [2020-10-20 00:37:11,249 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:37:11,249 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:37:11,251 INFO L168 Benchmark]: Toolchain (without parser) took 30945.47 ms. Allocated memory was 35.7 MB in the beginning and 59.8 MB in the end (delta: 24.1 MB). Free memory was 9.6 MB in the beginning and 34.5 MB in the end (delta: -24.9 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:37:11,252 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 35.1 MB. Free memory is still 14.3 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:37:11,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 546.71 ms. Allocated memory was 35.7 MB in the beginning and 45.1 MB in the end (delta: 9.4 MB). Free memory was 8.8 MB in the beginning and 20.1 MB in the end (delta: -11.4 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:11,254 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.01 ms. Allocated memory is still 45.1 MB. Free memory was 20.0 MB in the beginning and 16.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:11,255 INFO L168 Benchmark]: Boogie Preprocessor took 74.48 ms. Allocated memory was 45.1 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Free memory was 16.2 MB in the beginning and 26.4 MB in the end (delta: -10.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:11,256 INFO L168 Benchmark]: RCFGBuilder took 18219.67 ms. Allocated memory was 47.2 MB in the beginning and 50.3 MB in the end (delta: 3.1 MB). Free memory was 26.2 MB in the beginning and 26.0 MB in the end (delta: 187.5 kB). Peak memory consumption was 19.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:11,259 INFO L168 Benchmark]: TraceAbstraction took 11992.08 ms. Allocated memory was 50.3 MB in the beginning and 59.8 MB in the end (delta: 9.4 MB). Free memory was 25.6 MB in the beginning and 35.0 MB in the end (delta: -9.4 MB). Peak memory consumption was 48.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:37:11,260 INFO L168 Benchmark]: Witness Printer took 5.22 ms. Allocated memory is still 59.8 MB. Free memory was 35.0 MB in the beginning and 34.5 MB in the end (delta: 534.1 kB). Peak memory consumption was 534.1 kB. Max. memory is 14.3 GB. [2020-10-20 00:37:11,268 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 35.1 MB. Free memory is still 14.3 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 546.71 ms. Allocated memory was 35.7 MB in the beginning and 45.1 MB in the end (delta: 9.4 MB). Free memory was 8.8 MB in the beginning and 20.1 MB in the end (delta: -11.4 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 96.01 ms. Allocated memory is still 45.1 MB. Free memory was 20.0 MB in the beginning and 16.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 74.48 ms. Allocated memory was 45.1 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Free memory was 16.2 MB in the beginning and 26.4 MB in the end (delta: -10.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 18219.67 ms. Allocated memory was 47.2 MB in the beginning and 50.3 MB in the end (delta: 3.1 MB). Free memory was 26.2 MB in the beginning and 26.0 MB in the end (delta: 187.5 kB). Peak memory consumption was 19.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 11992.08 ms. Allocated memory was 50.3 MB in the beginning and 59.8 MB in the end (delta: 9.4 MB). Free memory was 25.6 MB in the beginning and 35.0 MB in the end (delta: -9.4 MB). Peak memory consumption was 48.0 kB. Max. memory is 14.3 GB. * Witness Printer took 5.22 ms. Allocated memory is still 59.8 MB. Free memory was 35.0 MB in the beginning and 34.5 MB in the end (delta: 534.1 kB). Peak memory consumption was 534.1 kB. Max. memory is 14.3 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: unable to decide satisfiability of path constraint. Possible FailurePath: [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L117-L118] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; [L236] float x = __VERIFIER_nondet_float(); [L237] float y = 1.0f / 0.0f; [L219] __int32_t ix; [L221] ieee_float_shape_type gf_u; [L222] gf_u.value = (x) [L223] EXPR gf_u.word [L223] (ix) = gf_u.word [L225] ix &= 0x7fffffff [L226] return (((ix) < 0x7f800000L)); [L240] COND TRUE isfinite_float(x) [L121] float z; [L122] __int32_t k, m, hx, hy, ix, iy; [L125] ieee_float_shape_type gf_u; [L126] gf_u.value = (x) [L127] EXPR gf_u.word [L127] (hx) = gf_u.word [L129] ix = hx & 0x7fffffff [L131] ieee_float_shape_type gf_u; [L132] gf_u.value = (y) [L133] EXPR gf_u.word [L133] (hy) = gf_u.word [L135] iy = hy & 0x7fffffff [L136] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L137] return x + y; [L242] float res = __ieee754_atan2f(y, x); [L245] COND TRUE res != pi_o_2 [L3] __assert_fail("0", "float_req_bl_0684a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 116 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 11.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 164 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 338 SizeOfPredicates, 0 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 1 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...