./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/addsub_float_inexact.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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-benchs/addsub_float_inexact.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9ad6ad46925d70ccfe8113c6806757723d44310 ......................................................................................................................................................................................................................................... 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 -Xmx12G -Xms1G -ea -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-benchs/addsub_float_inexact.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9ad6ad46925d70ccfe8113c6806757723d44310 .......................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:22:05,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:22:05,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:22:05,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:22:05,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:22:05,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:22:05,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:22:05,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:22:05,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:22:05,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:22:05,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:22:05,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:22:05,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:22:05,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:22:05,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:22:05,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:22:05,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:22:05,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:22:05,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:22:05,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:22:05,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:22:05,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:22:05,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:22:05,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:22:05,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:22:05,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:22:05,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:22:05,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:22:05,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:22:05,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:22:05,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:22:05,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:22:05,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:22:05,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:22:05,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:22:05,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:22:05,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:22:05,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:22:05,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:22:05,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:22:05,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:22:05,864 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:22:05,880 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:22:05,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:22:05,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:22:05,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:22:05,882 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:22:05,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:22:05,883 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:22:05,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:22:05,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:22:05,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:22:05,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:22:05,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:22:05,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:22:05,885 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:22:05,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:22:05,885 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:22:05,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:22:05,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:22:05,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:22:05,887 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:22:05,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:22:05,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:22:05,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:22:05,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:22:05,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:22:05,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:22:05,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:22:05,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:22:05,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:22:05,890 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(__VERIFIER_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 -> a9ad6ad46925d70ccfe8113c6806757723d44310 [2020-07-28 17:22:06,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:22:06,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:22:06,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:22:06,249 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:22:06,249 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:22:06,250 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2020-07-28 17:22:06,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4f8f18d/151832c2ba0e4adb80f9b55c0d7cd5e1/FLAGa1d3e1a05 [2020-07-28 17:22:06,791 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:22:06,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2020-07-28 17:22:06,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4f8f18d/151832c2ba0e4adb80f9b55c0d7cd5e1/FLAGa1d3e1a05 [2020-07-28 17:22:07,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4f8f18d/151832c2ba0e4adb80f9b55c0d7cd5e1 [2020-07-28 17:22:07,167 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:22:07,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:22:07,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:22:07,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:22:07,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:22:07,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:22:07" (1/1) ... [2020-07-28 17:22:07,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc626cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:07, skipping insertion in model container [2020-07-28 17:22:07,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:22:07" (1/1) ... [2020-07-28 17:22:07,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:22:07,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:22:07,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:22:07,387 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:22:07,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:22:07,420 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:22:07,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:07 WrapperNode [2020-07-28 17:22:07,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:22:07,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:22:07,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:22:07,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:22:07,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:07" (1/1) ... [2020-07-28 17:22:07,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:07" (1/1) ... [2020-07-28 17:22:07,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:22:07,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:22:07,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:22:07,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:22:07,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:07" (1/1) ... [2020-07-28 17:22:07,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:07" (1/1) ... [2020-07-28 17:22:07,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:07" (1/1) ... [2020-07-28 17:22:07,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:07" (1/1) ... [2020-07-28 17:22:07,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:07" (1/1) ... [2020-07-28 17:22:07,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:07" (1/1) ... [2020-07-28 17:22:07,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:07" (1/1) ... [2020-07-28 17:22:07,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:22:07,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:22:07,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:22:07,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:22:07,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:07" (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 [2020-07-28 17:22:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:22:07,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:22:07,767 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:22:07,767 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-28 17:22:07,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:22:07 BoogieIcfgContainer [2020-07-28 17:22:07,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:22:07,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:22:07,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:22:07,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:22:07,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:22:07" (1/3) ... [2020-07-28 17:22:07,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d74e9bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:22:07, skipping insertion in model container [2020-07-28 17:22:07,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:07" (2/3) ... [2020-07-28 17:22:07,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d74e9bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:22:07, skipping insertion in model container [2020-07-28 17:22:07,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:22:07" (3/3) ... [2020-07-28 17:22:07,782 INFO L109 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact.c [2020-07-28 17:22:07,793 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:22:07,800 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:22:07,816 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:22:07,839 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:22:07,839 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:22:07,839 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:22:07,839 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:22:07,840 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:22:07,840 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:22:07,840 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:22:07,840 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:22:07,856 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-07-28 17:22:07,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-28 17:22:07,863 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:22:07,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-28 17:22:07,864 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:22:07,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:22:07,871 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2020-07-28 17:22:07,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:22:07,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962004011] [2020-07-28 17:22:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:22:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:22:07,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:22:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:22:07,964 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:22:07,983 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:22:07,984 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:22:07,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:22:08,006 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:22:08,007 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 17:22:08,007 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 17:22:08,007 WARN L170 areAnnotationChecker]: L4-1 has no Hoare annotation [2020-07-28 17:22:08,008 WARN L170 areAnnotationChecker]: L4-1 has no Hoare annotation [2020-07-28 17:22:08,008 WARN L170 areAnnotationChecker]: L4-3 has no Hoare annotation [2020-07-28 17:22:08,008 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-28 17:22:08,008 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:22:08,009 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:22:08,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:22:08 BoogieIcfgContainer [2020-07-28 17:22:08,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:22:08,013 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:22:08,013 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:22:08,013 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:22:08,014 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:22:07" (3/4) ... [2020-07-28 17:22:08,019 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-28 17:22:08,019 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:22:08,024 INFO L168 Benchmark]: Toolchain (without parser) took 854.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -141.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:22:08,024 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:22:08,026 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.01 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:08,027 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:08,028 INFO L168 Benchmark]: Boogie Preprocessor took 19.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:22:08,029 INFO L168 Benchmark]: RCFGBuilder took 228.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:08,030 INFO L168 Benchmark]: TraceAbstraction took 239.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:08,030 INFO L168 Benchmark]: Witness Printer took 6.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:22:08,035 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 251.01 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 101.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 228.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 239.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 11.5 GB. * Witness Printer took 6.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 11. Possible FailurePath: [L8] float x, y, z, r; [L10] x = 1e8f [L11] y = x + 1.f [L12] z = x - 1.f [L13] r = y - z [L4] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 0.1.25-8bd4bc6 [2020-07-28 17:22:10,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:22:10,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:22:10,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:22:10,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:22:10,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:22:10,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:22:10,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:22:10,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:22:10,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:22:10,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:22:10,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:22:10,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:22:10,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:22:10,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:22:10,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:22:10,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:22:10,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:22:10,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:22:10,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:22:10,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:22:10,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:22:10,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:22:10,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:22:10,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:22:10,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:22:10,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:22:10,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:22:10,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:22:10,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:22:10,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:22:10,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:22:10,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:22:10,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:22:10,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:22:10,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:22:10,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:22:10,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:22:10,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:22:10,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:22:10,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:22:10,106 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:22:10,122 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:22:10,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:22:10,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:22:10,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:22:10,124 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:22:10,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:22:10,125 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:22:10,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:22:10,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:22:10,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:22:10,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:22:10,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:22:10,127 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:22:10,127 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:22:10,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:22:10,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:22:10,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:22:10,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:22:10,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:22:10,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:22:10,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:22:10,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:22:10,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:22:10,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:22:10,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:22:10,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:22:10,131 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:22:10,131 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:22:10,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:22:10,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:22:10,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:22:10,132 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(__VERIFIER_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 -> a9ad6ad46925d70ccfe8113c6806757723d44310 [2020-07-28 17:22:10,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:22:10,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:22:10,463 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:22:10,467 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:22:10,470 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:22:10,472 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2020-07-28 17:22:10,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84b4653aa/29041f087c5842fe8eefe39a97dd8563/FLAG34f0a6e40 [2020-07-28 17:22:11,049 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:22:11,049 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2020-07-28 17:22:11,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84b4653aa/29041f087c5842fe8eefe39a97dd8563/FLAG34f0a6e40 [2020-07-28 17:22:11,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84b4653aa/29041f087c5842fe8eefe39a97dd8563 [2020-07-28 17:22:11,407 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:22:11,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:22:11,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:22:11,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:22:11,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:22:11,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:22:11" (1/1) ... [2020-07-28 17:22:11,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72626b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:11, skipping insertion in model container [2020-07-28 17:22:11,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:22:11" (1/1) ... [2020-07-28 17:22:11,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:22:11,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:22:11,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:22:11,745 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:22:11,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:22:11,778 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:22:11,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:11 WrapperNode [2020-07-28 17:22:11,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:22:11,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:22:11,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:22:11,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:22:11,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:11" (1/1) ... [2020-07-28 17:22:11,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:11" (1/1) ... [2020-07-28 17:22:11,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:22:11,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:22:11,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:22:11,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:22:11,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:11" (1/1) ... [2020-07-28 17:22:11,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:11" (1/1) ... [2020-07-28 17:22:11,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:11" (1/1) ... [2020-07-28 17:22:11,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:11" (1/1) ... [2020-07-28 17:22:11,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:11" (1/1) ... [2020-07-28 17:22:11,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:11" (1/1) ... [2020-07-28 17:22:11,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:11" (1/1) ... [2020-07-28 17:22:11,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:22:11,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:22:11,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:22:11,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:22:11,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:11" (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 [2020-07-28 17:22:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:22:11,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:22:12,371 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:22:12,371 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-28 17:22:12,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:22:12 BoogieIcfgContainer [2020-07-28 17:22:12,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:22:12,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:22:12,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:22:12,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:22:12,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:22:11" (1/3) ... [2020-07-28 17:22:12,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21825710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:22:12, skipping insertion in model container [2020-07-28 17:22:12,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:22:11" (2/3) ... [2020-07-28 17:22:12,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21825710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:22:12, skipping insertion in model container [2020-07-28 17:22:12,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:22:12" (3/3) ... [2020-07-28 17:22:12,407 INFO L109 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact.c [2020-07-28 17:22:12,443 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:22:12,460 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:22:12,479 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:22:12,506 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:22:12,507 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:22:12,507 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:22:12,509 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:22:12,509 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:22:12,509 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:22:12,509 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:22:12,509 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:22:12,525 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-07-28 17:22:12,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-28 17:22:12,531 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:22:12,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-28 17:22:12,533 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:22:12,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:22:12,541 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2020-07-28 17:22:12,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:22:12,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104788713] [2020-07-28 17:22:12,557 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 [2020-07-28 17:22:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:22:12,688 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-28 17:22:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:22:12,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:22:12,832 INFO L280 TraceCheckUtils]: 0: Hoare triple {12#true} currentRoundingMode := ~roundNearestTiesToEven; {17#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2020-07-28 17:22:12,835 INFO L280 TraceCheckUtils]: 1: Hoare triple {17#(= currentRoundingMode roundNearestTiesToEven)} havoc main_#res;havoc main_~x~0, main_~y~0, main_~z~0, main_~r~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;havoc main_~r~0;main_~x~0 := ~to_fp~FLOAT(currentRoundingMode, 1.0E8);main_~y~0 := ~fp.add~FLOAT(currentRoundingMode, main_~x~0, ~to_fp~FLOAT(currentRoundingMode, 1.0));main_~z~0 := ~fp.sub~FLOAT(currentRoundingMode, main_~x~0, ~to_fp~FLOAT(currentRoundingMode, 1.0));main_~r~0 := ~fp.sub~FLOAT(currentRoundingMode, main_~y~0, main_~z~0);__VERIFIER_assert_#in~cond := (if ~fp.eq~FLOAT(main_~r~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {21#(= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 17:22:12,836 INFO L280 TraceCheckUtils]: 2: Hoare triple {21#(= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))} assume 0bv32 == __VERIFIER_assert_~cond; {13#false} is VALID [2020-07-28 17:22:12,837 INFO L280 TraceCheckUtils]: 3: Hoare triple {13#false} assume !false; {13#false} is VALID [2020-07-28 17:22:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:22:12,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:22:14,705 INFO L280 TraceCheckUtils]: 3: Hoare triple {13#false} assume !false; {13#false} is VALID [2020-07-28 17:22:14,706 INFO L280 TraceCheckUtils]: 2: Hoare triple {31#(not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))} assume 0bv32 == __VERIFIER_assert_~cond; {13#false} is VALID [2020-07-28 17:22:14,707 INFO L280 TraceCheckUtils]: 1: Hoare triple {35#(fp.eq (fp.sub currentRoundingMode (fp.add currentRoundingMode ((_ to_fp 8 24) currentRoundingMode 100000000.0) ((_ to_fp 8 24) currentRoundingMode 1.0)) (fp.sub currentRoundingMode ((_ to_fp 8 24) currentRoundingMode 100000000.0) ((_ to_fp 8 24) currentRoundingMode 1.0))) (_ +zero 8 24))} havoc main_#res;havoc main_~x~0, main_~y~0, main_~z~0, main_~r~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;havoc main_~r~0;main_~x~0 := ~to_fp~FLOAT(currentRoundingMode, 1.0E8);main_~y~0 := ~fp.add~FLOAT(currentRoundingMode, main_~x~0, ~to_fp~FLOAT(currentRoundingMode, 1.0));main_~z~0 := ~fp.sub~FLOAT(currentRoundingMode, main_~x~0, ~to_fp~FLOAT(currentRoundingMode, 1.0));main_~r~0 := ~fp.sub~FLOAT(currentRoundingMode, main_~y~0, main_~z~0);__VERIFIER_assert_#in~cond := (if ~fp.eq~FLOAT(main_~r~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {31#(not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))} is VALID [2020-07-28 17:22:14,718 INFO L280 TraceCheckUtils]: 0: Hoare triple {12#true} currentRoundingMode := ~roundNearestTiesToEven; {35#(fp.eq (fp.sub currentRoundingMode (fp.add currentRoundingMode ((_ to_fp 8 24) currentRoundingMode 100000000.0) ((_ to_fp 8 24) currentRoundingMode 1.0)) (fp.sub currentRoundingMode ((_ to_fp 8 24) currentRoundingMode 100000000.0) ((_ to_fp 8 24) currentRoundingMode 1.0))) (_ +zero 8 24))} is VALID [2020-07-28 17:22:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:22:14,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104788713] [2020-07-28 17:22:14,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:22:14,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-07-28 17:22:14,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946598725] [2020-07-28 17:22:14,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2020-07-28 17:22:14,732 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:22:14,736 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-28 17:22:14,899 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:22:14,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-28 17:22:14,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:22:14,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-28 17:22:14,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-28 17:22:14,909 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 6 states. [2020-07-28 17:22:15,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:22:15,172 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-07-28 17:22:15,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 17:22:15,172 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2020-07-28 17:22:15,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:22:15,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:22:15,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-07-28 17:22:15,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:22:15,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-07-28 17:22:15,181 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 12 transitions. [2020-07-28 17:22:15,346 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:22:15,353 INFO L225 Difference]: With dead ends: 13 [2020-07-28 17:22:15,354 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:22:15,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-28 17:22:15,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:22:15,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:22:15,376 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:22:15,377 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:22:15,377 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:22:15,377 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:22:15,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:22:15,378 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:22:15,378 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:22:15,378 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:22:15,379 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:22:15,379 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:22:15,379 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:22:15,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:22:15,379 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:22:15,380 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:22:15,380 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:22:15,380 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:22:15,380 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:22:15,380 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:22:15,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:22:15,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:22:15,383 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-07-28 17:22:15,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:22:15,383 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:22:15,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-28 17:22:15,383 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:22:15,383 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:22:15,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:22:15,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:22:15,664 INFO L264 CegarLoopResult]: At program point L4-3(line 4) the Hoare annotation is: (and (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2020-07-28 17:22:15,665 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:22:15,665 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 17:22:15,665 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:22:15,665 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:22:15,665 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-07-28 17:22:15,666 INFO L264 CegarLoopResult]: At program point L15(lines 6 16) the Hoare annotation is: (and (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2020-07-28 17:22:15,666 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-28 17:22:15,666 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-07-28 17:22:15,671 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:22:15,671 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:22:15,672 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 17:22:15,672 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 17:22:15,672 WARN L170 areAnnotationChecker]: L4-1 has no Hoare annotation [2020-07-28 17:22:15,672 WARN L170 areAnnotationChecker]: L4-1 has no Hoare annotation [2020-07-28 17:22:15,674 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:22:15,674 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:22:15,674 INFO L163 areAnnotationChecker]: CFG has 1 edges. 1 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:22:15,678 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:22:15,681 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:22:15,683 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:22:15,684 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:22:15,685 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:22:15,685 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:22:15,686 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:22:15,686 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:22:15,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:22:15 BoogieIcfgContainer [2020-07-28 17:22:15,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:22:15,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:22:15,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:22:15,689 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:22:15,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:22:12" (3/4) ... [2020-07-28 17:22:15,693 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:22:15,705 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-07-28 17:22:15,705 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-07-28 17:22:15,705 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 17:22:15,746 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:22:15,746 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:22:15,749 INFO L168 Benchmark]: Toolchain (without parser) took 4338.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 961.6 MB in the beginning and 1.0 GB in the end (delta: -73.0 MB). Peak memory consumption was 50.2 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:15,750 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:22:15,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.44 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:15,751 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:15,752 INFO L168 Benchmark]: Boogie Preprocessor took 23.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:22:15,753 INFO L168 Benchmark]: RCFGBuilder took 477.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:15,754 INFO L168 Benchmark]: TraceAbstraction took 3304.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.2 MB). Peak memory consumption was 53.2 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:15,755 INFO L168 Benchmark]: Witness Printer took 57.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:15,763 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 363.44 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 101.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 477.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3304.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.2 MB). Peak memory consumption was 53.2 MB. Max. memory is 11.5 GB. * Witness Printer took 57.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant [2020-07-28 17:22:15,775 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:22:15,776 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:22:15,776 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:22:15,777 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ~bvadd64(cond, 4294967295bv32) == 0bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 4]: Loop Invariant [2020-07-28 17:22:15,777 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:22:15,777 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:22:15,778 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:22:15,778 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ~bvadd64(cond, 4294967295bv32) == 0bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 9 SDslu, 2 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 18 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 102 SizeOfPredicates, 7 NumberOfNonLiveVariables, 11 ConjunctsInSsa, 8 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 proved your program to be correct! Received shutdown request...