./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0684b.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_0684b.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 f0d9ad6e2f8e5d338ebe767968caad154994a4d6 ............................................................................................................................................................................................................................................................................................................................... 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_0684b.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 f0d9ad6e2f8e5d338ebe767968caad154994a4d6 ................................................................................................................................................................................................................................................................................................................................................................. 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 00:36:36,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:36:36,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:36:36,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:36:36,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:36:36,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:36:36,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:36:36,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:36:36,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:36:36,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:36:36,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:36:36,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:36:36,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:36:36,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:36:36,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:36:36,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:36:36,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:36:36,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:36:36,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:36:36,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:36:36,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:36:36,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:36:36,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:36:36,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:36:36,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:36:36,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:36:36,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:36:36,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:36:36,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:36:36,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:36:36,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:36:36,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:36:36,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:36:36,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:36:36,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:36:36,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:36:36,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:36:36,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:36:36,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:36:36,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:36:36,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:36:36,845 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:36:36,883 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:36:36,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:36:36,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:36:36,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:36:36,885 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:36:36,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:36:36,886 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:36:36,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:36:36,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:36:36,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:36:36,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:36:36,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:36:36,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:36:36,888 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:36:36,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:36:36,889 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:36:36,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:36:36,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:36:36,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:36:36,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:36:36,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:36:36,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:36:36,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:36:36,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:36:36,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:36:36,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:36:36,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:36:36,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:36:36,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:36:36,892 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 -> f0d9ad6e2f8e5d338ebe767968caad154994a4d6 [2020-10-20 00:36:37,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:36:37,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:36:37,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:36:37,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:36:37,125 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:36:37,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0684b.c [2020-10-20 00:36:37,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec9e68396/cc329ee4e14649a89c49c3ec5e6d865f/FLAG4faef21be [2020-10-20 00:36:37,852 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:36:37,856 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0684b.c [2020-10-20 00:36:37,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec9e68396/cc329ee4e14649a89c49c3ec5e6d865f/FLAG4faef21be [2020-10-20 00:36:38,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec9e68396/cc329ee4e14649a89c49c3ec5e6d865f [2020-10-20 00:36:38,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:36:38,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:36:38,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:36:38,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:36:38,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:36:38,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:36:38" (1/1) ... [2020-10-20 00:36:38,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e670470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:38, skipping insertion in model container [2020-10-20 00:36:38,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:36:38" (1/1) ... [2020-10-20 00:36:38,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:36:38,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:36:38,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:36:38,455 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:36:38,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:36:38,538 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:36:38,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:38 WrapperNode [2020-10-20 00:36:38,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:36:38,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:36:38,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:36:38,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:36:38,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:38" (1/1) ... [2020-10-20 00:36:38,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:38" (1/1) ... [2020-10-20 00:36:38,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:36:38,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:36:38,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:36:38,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:36:38,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:38" (1/1) ... [2020-10-20 00:36:38,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:38" (1/1) ... [2020-10-20 00:36:38,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:38" (1/1) ... [2020-10-20 00:36:38,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:38" (1/1) ... [2020-10-20 00:36:38,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:38" (1/1) ... [2020-10-20 00:36:38,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:38" (1/1) ... [2020-10-20 00:36:38,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:38" (1/1) ... [2020-10-20 00:36:38,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:36:38,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:36:38,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:36:38,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:36:38,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:38" (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 00:36:38,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:36:38,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:36:38,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:36:38,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:36:38,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:36:38,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:36:38,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:36:38,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:36:38,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-20 00:36:38,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:36:39,661 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:36:39,662 INFO L298 CfgBuilder]: Removed 46 assume(true) statements. [2020-10-20 00:36:39,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:36:39 BoogieIcfgContainer [2020-10-20 00:36:39,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:36:39,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:36:39,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:36:39,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:36:39,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:36:38" (1/3) ... [2020-10-20 00:36:39,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcbaec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:36:39, skipping insertion in model container [2020-10-20 00:36:39,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:38" (2/3) ... [2020-10-20 00:36:39,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcbaec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:36:39, skipping insertion in model container [2020-10-20 00:36:39,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:36:39" (3/3) ... [2020-10-20 00:36:39,680 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0684b.c [2020-10-20 00:36:39,697 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:36:39,708 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:36:39,739 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:36:39,773 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:36:39,774 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:36:39,774 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:36:39,774 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:36:39,775 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:36:39,775 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:36:39,775 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:36:39,775 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:36:39,798 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-10-20 00:36:39,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:36:39,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:36:39,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:36:39,809 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:36:39,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:36:39,816 INFO L82 PathProgramCache]: Analyzing trace with hash -701283450, now seen corresponding path program 1 times [2020-10-20 00:36:39,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:36:39,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150204788] [2020-10-20 00:36:39,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:36:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:36:40,037 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 00:36:40,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150204788] [2020-10-20 00:36:40,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:36:40,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:36:40,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759778514] [2020-10-20 00:36:40,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:36:40,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:36:40,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:36:40,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:36:40,066 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 2 states. [2020-10-20 00:36:40,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:36:40,104 INFO L93 Difference]: Finished difference Result 229 states and 381 transitions. [2020-10-20 00:36:40,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:36:40,105 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-10-20 00:36:40,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:36:40,119 INFO L225 Difference]: With dead ends: 229 [2020-10-20 00:36:40,120 INFO L226 Difference]: Without dead ends: 111 [2020-10-20 00:36:40,124 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 00:36:40,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-20 00:36:40,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-10-20 00:36:40,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-20 00:36:40,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2020-10-20 00:36:40,172 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 14 [2020-10-20 00:36:40,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:36:40,173 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2020-10-20 00:36:40,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:36:40,173 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2020-10-20 00:36:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 00:36:40,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:36:40,175 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 00:36:40,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:36:40,175 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:36:40,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:36:40,176 INFO L82 PathProgramCache]: Analyzing trace with hash 69437810, now seen corresponding path program 1 times [2020-10-20 00:36:40,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:36:40,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498861536] [2020-10-20 00:36:40,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:36:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:36:40,296 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:36:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:36:40,392 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:36:40,430 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:36:40,430 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:36:40,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:36:40,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:36:40 BoogieIcfgContainer [2020-10-20 00:36:40,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:36:40,484 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:36:40,484 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:36:40,484 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:36:40,485 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:36:39" (3/4) ... [2020-10-20 00:36:40,490 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:36:40,490 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:36:40,493 INFO L168 Benchmark]: Toolchain (without parser) took 2398.32 ms. Allocated memory was 44.0 MB in the beginning and 53.0 MB in the end (delta: 8.9 MB). Free memory was 24.5 MB in the beginning and 22.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:36:40,495 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 32.5 MB. Free memory was 11.1 MB in the beginning and 11.1 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. [2020-10-20 00:36:40,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 438.16 ms. Allocated memory is still 44.0 MB. Free memory was 23.6 MB in the beginning and 20.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 14.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:36:40,498 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.39 ms. Allocated memory is still 44.0 MB. Free memory was 20.8 MB in the beginning and 17.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:36:40,498 INFO L168 Benchmark]: Boogie Preprocessor took 69.66 ms. Allocated memory is still 44.0 MB. Free memory was 17.1 MB in the beginning and 13.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:36:40,500 INFO L168 Benchmark]: RCFGBuilder took 985.31 ms. Allocated memory was 44.0 MB in the beginning and 49.3 MB in the end (delta: 5.2 MB). Free memory was 13.5 MB in the beginning and 24.1 MB in the end (delta: -10.6 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:36:40,502 INFO L168 Benchmark]: TraceAbstraction took 815.60 ms. Allocated memory was 49.3 MB in the beginning and 53.0 MB in the end (delta: 3.7 MB). Free memory was 23.4 MB in the beginning and 23.4 MB in the end (delta: -4.9 kB). Peak memory consumption was 16.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:36:40,508 INFO L168 Benchmark]: Witness Printer took 6.13 ms. Allocated memory is still 53.0 MB. Free memory was 23.4 MB in the beginning and 22.9 MB in the end (delta: 443.3 kB). Peak memory consumption was 443.3 kB. Max. memory is 14.3 GB. [2020-10-20 00:36:40,517 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 32.5 MB. Free memory was 11.1 MB in the beginning and 11.1 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 438.16 ms. Allocated memory is still 44.0 MB. Free memory was 23.6 MB in the beginning and 20.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 14.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 69.39 ms. Allocated memory is still 44.0 MB. Free memory was 20.8 MB in the beginning and 17.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 69.66 ms. Allocated memory is still 44.0 MB. Free memory was 17.1 MB in the beginning and 13.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 985.31 ms. Allocated memory was 44.0 MB in the beginning and 49.3 MB in the end (delta: 5.2 MB). Free memory was 13.5 MB in the beginning and 24.1 MB in the end (delta: -10.6 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 815.60 ms. Allocated memory was 49.3 MB in the beginning and 53.0 MB in the end (delta: 3.7 MB). Free memory was 23.4 MB in the beginning and 23.4 MB in the end (delta: -4.9 kB). Peak memory consumption was 16.8 MB. Max. memory is 14.3 GB. * Witness Printer took 6.13 ms. Allocated memory is still 53.0 MB. Free memory was 23.4 MB in the beginning and 22.9 MB in the end (delta: 443.3 kB). Peak memory consumption was 443.3 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 244, 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] [L239] 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] [L241] float res = __ieee754_atan2f(y, x); [L244] 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_0684b.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: 0.6s, 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, 0.1s 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 00:36:42,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:36:42,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:36:42,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-20 00:36:42,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:36:42,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:36:42,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:36:42,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:36:42,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:36:42,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:36:42,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:36:42,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:36:42,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:36:42,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:36:42,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:36:42,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:36:42,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-20 00:36:42,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:36:42,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:36:42,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:36:42,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:36:42,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:36:42,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:36:42,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:36:42,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:36:42,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:36:42,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:36:42,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:36:42,927 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:36:42,972 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:36:42,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:36:42,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:36:42,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:36:42,976 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:36:42,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:36:42,976 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:36:42,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:36:42,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:36:42,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:36:42,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:36:42,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:36:42,978 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:36:42,978 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:36:42,979 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:36:42,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:36:42,979 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:36:42,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:36:42,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:36:42,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:36:42,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:36:42,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:36:42,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:36:42,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:36:42,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:36:42,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:36:42,981 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:36:42,981 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:36:42,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:36:42,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:36:42,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:36:42,982 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 -> f0d9ad6e2f8e5d338ebe767968caad154994a4d6 [2020-10-20 00:36:43,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:36:43,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:36:43,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:36:43,225 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:36:43,226 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:36:43,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0684b.c [2020-10-20 00:36:43,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a0590cb7/e8da22820fdf4d2197d339c4d8b2ab95/FLAGd51c0b220 [2020-10-20 00:36:43,897 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:36:43,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0684b.c [2020-10-20 00:36:43,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a0590cb7/e8da22820fdf4d2197d339c4d8b2ab95/FLAGd51c0b220 [2020-10-20 00:36:44,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a0590cb7/e8da22820fdf4d2197d339c4d8b2ab95 [2020-10-20 00:36:44,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:36:44,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:36:44,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:36:44,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:36:44,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:36:44,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:36:44" (1/1) ... [2020-10-20 00:36:44,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423405cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:44, skipping insertion in model container [2020-10-20 00:36:44,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:36:44" (1/1) ... [2020-10-20 00:36:44,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:36:44,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:36:44,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:36:44,648 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:36:44,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:36:44,797 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:36:44,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:44 WrapperNode [2020-10-20 00:36:44,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:36:44,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:36:44,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:36:44,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:36:44,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:44" (1/1) ... [2020-10-20 00:36:44,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:44" (1/1) ... [2020-10-20 00:36:44,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:36:44,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:36:44,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:36:44,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:36:44,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:44" (1/1) ... [2020-10-20 00:36:44,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:44" (1/1) ... [2020-10-20 00:36:44,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:44" (1/1) ... [2020-10-20 00:36:44,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:44" (1/1) ... [2020-10-20 00:36:44,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:44" (1/1) ... [2020-10-20 00:36:45,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:44" (1/1) ... [2020-10-20 00:36:45,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:44" (1/1) ... [2020-10-20 00:36:45,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:36:45,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:36:45,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:36:45,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:36:45,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:44" (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 00:36:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-10-20 00:36:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:36:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:36:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-10-20 00:36:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:36:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:36:45,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:36:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-20 00:36:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:36:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:37:06,599 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:37:06,599 INFO L298 CfgBuilder]: Removed 46 assume(true) statements. [2020-10-20 00:37:06,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:37:06 BoogieIcfgContainer [2020-10-20 00:37:06,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:37:06,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:37:06,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:37:06,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:37:06,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:36:44" (1/3) ... [2020-10-20 00:37:06,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed251bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:37:06, skipping insertion in model container [2020-10-20 00:37:06,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:36:44" (2/3) ... [2020-10-20 00:37:06,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed251bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:37:06, skipping insertion in model container [2020-10-20 00:37:06,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:37:06" (3/3) ... [2020-10-20 00:37:06,610 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0684b.c [2020-10-20 00:37:06,622 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:37:06,631 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:37:06,643 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:37:06,666 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:37:06,667 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:37:06,667 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:37:06,667 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:37:06,667 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:37:06,667 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:37:06,667 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:37:06,668 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:37:06,683 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-10-20 00:37:06,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:37:06,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:37:06,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:37:06,691 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:37:06,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:37:06,697 INFO L82 PathProgramCache]: Analyzing trace with hash -701283450, now seen corresponding path program 1 times [2020-10-20 00:37:06,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:37:06,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578621127] [2020-10-20 00:37:06,711 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 00:37:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:37:07,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:37:07,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:37:07,732 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 00:37:07,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:37:07,736 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 00:37:07,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578621127] [2020-10-20 00:37:07,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:37:07,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:37:07,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386578845] [2020-10-20 00:37:07,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:37:07,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:37:07,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:37:07,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:37:07,759 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 2 states. [2020-10-20 00:37:07,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:37:07,792 INFO L93 Difference]: Finished difference Result 229 states and 381 transitions. [2020-10-20 00:37:07,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:37:07,794 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-10-20 00:37:07,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:37:07,806 INFO L225 Difference]: With dead ends: 229 [2020-10-20 00:37:07,806 INFO L226 Difference]: Without dead ends: 111 [2020-10-20 00:37:07,810 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 00:37:07,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-20 00:37:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-10-20 00:37:07,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-20 00:37:07,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2020-10-20 00:37:07,870 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 14 [2020-10-20 00:37:07,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:37:07,870 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2020-10-20 00:37:07,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:37:07,870 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2020-10-20 00:37:07,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 00:37:07,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:37:07,871 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 00:37:08,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:37:08,073 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:37:08,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:37:08,074 INFO L82 PathProgramCache]: Analyzing trace with hash 69437810, now seen corresponding path program 1 times [2020-10-20 00:37:08,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:37:08,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711979292] [2020-10-20 00:37:08,076 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 00:37:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:37:09,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-20 00:37:09,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:37:09,234 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:37:09,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711979292] [2020-10-20 00:37:09,493 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:37:09,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1839681869] [2020-10-20 00:37:09,493 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 00:37:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:37:16,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-20 00:37:16,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:37:16,152 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:37:16,284 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:37:16,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970379949] [2020-10-20 00:37:16,285 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 00:37:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:37:16,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-20 00:37:16,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:37:16,510 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:37:16,640 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:37:17,301 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 00:37:17,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:37:17,450 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 00:37:17,664 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 00:37:18,113 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 00:37:18,114 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:37:18,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:37:18,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 00:37:18,115 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 00:37:18,115 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:37:18,721 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 00:37:18,760 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 00:37:18,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:37:18 BoogieIcfgContainer [2020-10-20 00:37:18,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:37:18,761 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:37:18,761 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:37:18,761 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:37:18,762 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:37:06" (3/4) ... [2020-10-20 00:37:18,769 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:37:18,769 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:37:18,772 INFO L168 Benchmark]: Toolchain (without parser) took 34536.87 ms. Allocated memory was 39.3 MB in the beginning and 54.0 MB in the end (delta: 14.7 MB). Free memory was 17.1 MB in the beginning and 34.1 MB in the end (delta: -17.0 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:37:18,773 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 30.4 MB. Free memory was 6.6 MB in the beginning and 6.6 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:37:18,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 562.22 ms. Allocated memory was 39.3 MB in the beginning and 41.4 MB in the end (delta: 2.1 MB). Free memory was 16.2 MB in the beginning and 25.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:18,774 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.53 ms. Allocated memory is still 41.4 MB. Free memory was 25.7 MB in the beginning and 22.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:18,775 INFO L168 Benchmark]: Boogie Preprocessor took 118.64 ms. Allocated memory is still 41.4 MB. Free memory was 22.0 MB in the beginning and 18.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:18,776 INFO L168 Benchmark]: RCFGBuilder took 21581.74 ms. Allocated memory was 41.4 MB in the beginning and 46.1 MB in the end (delta: 4.7 MB). Free memory was 17.9 MB in the beginning and 24.1 MB in the end (delta: -6.2 MB). Peak memory consumption was 11.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:18,777 INFO L168 Benchmark]: TraceAbstraction took 12157.99 ms. Allocated memory was 46.1 MB in the beginning and 54.0 MB in the end (delta: 7.9 MB). Free memory was 23.4 MB in the beginning and 35.0 MB in the end (delta: -11.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:18,778 INFO L168 Benchmark]: Witness Printer took 8.31 ms. Allocated memory is still 54.0 MB. Free memory was 34.5 MB in the beginning and 34.1 MB in the end (delta: 434.2 kB). Peak memory consumption was 434.2 kB. Max. memory is 14.3 GB. [2020-10-20 00:37:18,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 30.4 MB. Free memory was 6.6 MB in the beginning and 6.6 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 562.22 ms. Allocated memory was 39.3 MB in the beginning and 41.4 MB in the end (delta: 2.1 MB). Free memory was 16.2 MB in the beginning and 25.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 95.53 ms. Allocated memory is still 41.4 MB. Free memory was 25.7 MB in the beginning and 22.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 118.64 ms. Allocated memory is still 41.4 MB. Free memory was 22.0 MB in the beginning and 18.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 21581.74 ms. Allocated memory was 41.4 MB in the beginning and 46.1 MB in the end (delta: 4.7 MB). Free memory was 17.9 MB in the beginning and 24.1 MB in the end (delta: -6.2 MB). Peak memory consumption was 11.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 12157.99 ms. Allocated memory was 46.1 MB in the beginning and 54.0 MB in the end (delta: 7.9 MB). Free memory was 23.4 MB in the beginning and 35.0 MB in the end (delta: -11.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 14.3 GB. * Witness Printer took 8.31 ms. Allocated memory is still 54.0 MB. Free memory was 34.5 MB in the beginning and 34.1 MB in the end (delta: 434.2 kB). Peak memory consumption was 434.2 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)); [L239] 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; [L241] float res = __ieee754_atan2f(y, x); [L244] COND TRUE res != -pi_o_2 [L3] __assert_fail("0", "float_req_bl_0684b.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: 12.0s, 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...