./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/addsub_double_exact.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_double_exact.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 e20164d66b413fd1e6480d779b873570f1c551b2 ......................................................................................................................................................................................................................................... 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_double_exact.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 e20164d66b413fd1e6480d779b873570f1c551b2 .......................................................................................................................................................................................................................................................................................................................................................... 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 17:21:51,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:21:51,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:21:51,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:21:51,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:21:51,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:21:51,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:21:51,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:21:51,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:21:51,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:21:51,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:21:51,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:21:51,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:21:51,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:21:51,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:21:51,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:21:51,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:21:51,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:21:51,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:21:51,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:21:51,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:21:51,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:21:51,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:21:51,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:21:51,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:21:51,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:21:51,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:21:51,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:21:51,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:21:51,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:21:51,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:21:51,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:21:51,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:21:51,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:21:51,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:21:51,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:21:51,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:21:51,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:21:51,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:21:51,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:21:51,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:21:51,637 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:21:51,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:21:51,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:21:51,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:21:51,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:21:51,655 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:21:51,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:21:51,656 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:21:51,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:21:51,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:21:51,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:21:51,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:21:51,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:21:51,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:21:51,658 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:21:51,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:21:51,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:21:51,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:21:51,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:21:51,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:21:51,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:21:51,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:21:51,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:21:51,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:21:51,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:21:51,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:21:51,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:21:51,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:21:51,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:21:51,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:21:51,663 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 -> e20164d66b413fd1e6480d779b873570f1c551b2 [2020-07-28 17:21:51,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:21:51,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:21:51,984 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:21:51,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:21:51,988 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:21:51,989 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/addsub_double_exact.c [2020-07-28 17:21:52,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/123154710/23337a8848f1440582300009c11a9d23/FLAGafa47d70d [2020-07-28 17:21:52,482 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:21:52,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_double_exact.c [2020-07-28 17:21:52,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/123154710/23337a8848f1440582300009c11a9d23/FLAGafa47d70d [2020-07-28 17:21:52,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/123154710/23337a8848f1440582300009c11a9d23 [2020-07-28 17:21:52,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:21:52,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:21:52,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:21:52,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:21:52,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:21:52,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:21:52" (1/1) ... [2020-07-28 17:21:52,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277a7c2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:52, skipping insertion in model container [2020-07-28 17:21:52,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:21:52" (1/1) ... [2020-07-28 17:21:52,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:21:52,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:21:53,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:21:53,106 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:21:53,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:21:53,134 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:21:53,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:53 WrapperNode [2020-07-28 17:21:53,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:21:53,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:21:53,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:21:53,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:21:53,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:53" (1/1) ... [2020-07-28 17:21:53,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:53" (1/1) ... [2020-07-28 17:21:53,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:21:53,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:21:53,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:21:53,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:21:53,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:53" (1/1) ... [2020-07-28 17:21:53,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:53" (1/1) ... [2020-07-28 17:21:53,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:53" (1/1) ... [2020-07-28 17:21:53,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:53" (1/1) ... [2020-07-28 17:21:53,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:53" (1/1) ... [2020-07-28 17:21:53,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:53" (1/1) ... [2020-07-28 17:21:53,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:53" (1/1) ... [2020-07-28 17:21:53,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:21:53,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:21:53,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:21:53,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:21:53,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:53" (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 17:21:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:21:53,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:21:53,481 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:21:53,481 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-28 17:21:53,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:21:53 BoogieIcfgContainer [2020-07-28 17:21:53,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:21:53,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:21:53,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:21:53,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:21:53,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:21:52" (1/3) ... [2020-07-28 17:21:53,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a8e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:21:53, skipping insertion in model container [2020-07-28 17:21:53,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:53" (2/3) ... [2020-07-28 17:21:53,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a8e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:21:53, skipping insertion in model container [2020-07-28 17:21:53,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:21:53" (3/3) ... [2020-07-28 17:21:53,493 INFO L109 eAbstractionObserver]: Analyzing ICFG addsub_double_exact.c [2020-07-28 17:21:53,503 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:21:53,510 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:21:53,526 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:21:53,547 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:21:53,548 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:21:53,548 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:21:53,548 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:21:53,549 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:21:53,549 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:21:53,549 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:21:53,549 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:21:53,564 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-07-28 17:21:53,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-28 17:21:53,571 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:21:53,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-28 17:21:53,572 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:21:53,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:21:53,579 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2020-07-28 17:21:53,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:21:53,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967739912] [2020-07-28 17:21:53,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:21:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:21:53,667 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:21:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:21:53,675 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:21:53,694 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:21:53,695 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:21:53,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:21:53,718 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:21:53,719 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 17:21:53,719 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 17:21:53,719 WARN L170 areAnnotationChecker]: L4-1 has no Hoare annotation [2020-07-28 17:21:53,720 WARN L170 areAnnotationChecker]: L4-1 has no Hoare annotation [2020-07-28 17:21:53,720 WARN L170 areAnnotationChecker]: L4-3 has no Hoare annotation [2020-07-28 17:21:53,720 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-28 17:21:53,720 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:21:53,721 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 17:21:53,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:21:53 BoogieIcfgContainer [2020-07-28 17:21:53,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:21:53,725 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:21:53,725 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:21:53,725 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:21:53,726 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:21:53" (3/4) ... [2020-07-28 17:21:53,731 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-28 17:21:53,731 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:21:53,735 INFO L168 Benchmark]: Toolchain (without parser) took 844.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -140.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:21:53,736 INFO L168 Benchmark]: CDTParser took 0.79 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 17:21:53,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.27 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 17:21:53,738 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -176.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:21:53,739 INFO L168 Benchmark]: Boogie Preprocessor took 17.34 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 17:21:53,740 INFO L168 Benchmark]: RCFGBuilder took 238.75 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: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:21:53,741 INFO L168 Benchmark]: TraceAbstraction took 237.78 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: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:21:53,742 INFO L168 Benchmark]: Witness Printer took 6.73 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 17:21:53,746 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 0.79 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 242.27 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 93.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -176.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.34 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 238.75 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: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 237.78 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: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * Witness Printer took 6.73 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 someBinaryDOUBLEComparisonOperation at line 14, overapproximation of someBinaryArithmeticDOUBLEoperation at line 11. Possible FailurePath: [L8] double x, y, z, r; [L10] x = 1e8 [L11] y = x + 1 [L12] z = x - 1 [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 17:21:55,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:21:55,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:21:55,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:21:55,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:21:55,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:21:55,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:21:55,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:21:55,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:21:55,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:21:55,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:21:55,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:21:55,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:21:55,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:21:55,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:21:55,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:21:55,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:21:55,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:21:55,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:21:55,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:21:55,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:21:55,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:21:55,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:21:55,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:21:55,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:21:55,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:21:55,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:21:55,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:21:55,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:21:55,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:21:55,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:21:55,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:21:55,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:21:55,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:21:55,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:21:55,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:21:55,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:21:55,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:21:55,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:21:55,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:21:55,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:21:55,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:21:55,709 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:21:55,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:21:55,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:21:55,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:21:55,711 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:21:55,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:21:55,712 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:21:55,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:21:55,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:21:55,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:21:55,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:21:55,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:21:55,714 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:21:55,714 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:21:55,714 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:21:55,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:21:55,715 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:21:55,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:21:55,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:21:55,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:21:55,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:21:55,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:21:55,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:21:55,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:21:55,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:21:55,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:21:55,718 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:21:55,718 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:21:55,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:21:55,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:21:55,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:21:55,719 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 -> e20164d66b413fd1e6480d779b873570f1c551b2 [2020-07-28 17:21:56,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:21:56,048 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:21:56,052 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:21:56,054 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:21:56,054 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:21:56,055 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/addsub_double_exact.c [2020-07-28 17:21:56,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dca2dc5a1/ad16c82170c143fd8d8ccfd30bdbf82f/FLAGa3d07a1d6 [2020-07-28 17:21:56,572 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:21:56,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_double_exact.c [2020-07-28 17:21:56,579 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dca2dc5a1/ad16c82170c143fd8d8ccfd30bdbf82f/FLAGa3d07a1d6 [2020-07-28 17:21:56,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dca2dc5a1/ad16c82170c143fd8d8ccfd30bdbf82f [2020-07-28 17:21:56,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:21:56,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:21:56,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:21:56,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:21:56,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:21:56,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:21:56" (1/1) ... [2020-07-28 17:21:56,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3af9146b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:56, skipping insertion in model container [2020-07-28 17:21:56,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:21:56" (1/1) ... [2020-07-28 17:21:56,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:21:56,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:21:56,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:21:56,822 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:21:56,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:21:56,857 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:21:56,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:56 WrapperNode [2020-07-28 17:21:56,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:21:56,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:21:56,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:21:56,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:21:56,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:56" (1/1) ... [2020-07-28 17:21:56,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:56" (1/1) ... [2020-07-28 17:21:56,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:21:56,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:21:56,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:21:56,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:21:56,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:56" (1/1) ... [2020-07-28 17:21:56,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:56" (1/1) ... [2020-07-28 17:21:56,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:56" (1/1) ... [2020-07-28 17:21:56,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:56" (1/1) ... [2020-07-28 17:21:56,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:56" (1/1) ... [2020-07-28 17:21:56,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:56" (1/1) ... [2020-07-28 17:21:57,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:56" (1/1) ... [2020-07-28 17:21:57,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:21:57,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:21:57,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:21:57,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:21:57,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:56" (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 17:21:57,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:21:57,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:21:57,965 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:21:57,965 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-28 17:21:57,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:21:57 BoogieIcfgContainer [2020-07-28 17:21:57,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:21:57,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:21:57,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:21:57,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:21:57,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:21:56" (1/3) ... [2020-07-28 17:21:58,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c267a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:21:57, skipping insertion in model container [2020-07-28 17:21:58,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:56" (2/3) ... [2020-07-28 17:21:58,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c267a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:21:58, skipping insertion in model container [2020-07-28 17:21:58,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:21:57" (3/3) ... [2020-07-28 17:21:58,007 INFO L109 eAbstractionObserver]: Analyzing ICFG addsub_double_exact.c [2020-07-28 17:21:58,026 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:21:58,034 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:21:58,069 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:21:58,111 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:21:58,111 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:21:58,111 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:21:58,112 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:21:58,112 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:21:58,112 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:21:58,113 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:21:58,113 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:21:58,129 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-07-28 17:21:58,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-28 17:21:58,135 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:21:58,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-28 17:21:58,136 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:21:58,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:21:58,143 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2020-07-28 17:21:58,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:21:58,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971615787] [2020-07-28 17:21:58,158 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 17:21:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:21:58,402 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-28 17:21:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:21:58,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:21:58,552 INFO L280 TraceCheckUtils]: 0: Hoare triple {12#true} currentRoundingMode := ~roundNearestTiesToEven; {17#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2020-07-28 17:21:58,635 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~DOUBLE(currentRoundingMode, 1.0E8);main_~y~0 := ~fp.add~DOUBLE(currentRoundingMode, main_~x~0, ~convertINTToDOUBLE(currentRoundingMode, 1bv32));main_~z~0 := ~fp.sub~DOUBLE(currentRoundingMode, main_~x~0, ~convertINTToDOUBLE(currentRoundingMode, 1bv32));main_~r~0 := ~fp.sub~DOUBLE(currentRoundingMode, main_~y~0, main_~z~0);__VERIFIER_assert_#in~cond := (if ~fp.eq~DOUBLE(main_~r~0, ~to_fp~DOUBLE(currentRoundingMode, 2.0)) 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 17:21:58,637 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 17:21:58,637 INFO L280 TraceCheckUtils]: 3: Hoare triple {13#false} assume !false; {13#false} is VALID [2020-07-28 17:21:58,639 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 17:21:58,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:22:00,761 INFO L280 TraceCheckUtils]: 3: Hoare triple {13#false} assume !false; {13#false} is VALID [2020-07-28 17:22:00,762 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 17:22:01,313 INFO L280 TraceCheckUtils]: 1: Hoare triple {12#true} 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~DOUBLE(currentRoundingMode, 1.0E8);main_~y~0 := ~fp.add~DOUBLE(currentRoundingMode, main_~x~0, ~convertINTToDOUBLE(currentRoundingMode, 1bv32));main_~z~0 := ~fp.sub~DOUBLE(currentRoundingMode, main_~x~0, ~convertINTToDOUBLE(currentRoundingMode, 1bv32));main_~r~0 := ~fp.sub~DOUBLE(currentRoundingMode, main_~y~0, main_~z~0);__VERIFIER_assert_#in~cond := (if ~fp.eq~DOUBLE(main_~r~0, ~to_fp~DOUBLE(currentRoundingMode, 2.0)) 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 17:22:01,314 INFO L280 TraceCheckUtils]: 0: Hoare triple {12#true} currentRoundingMode := ~roundNearestTiesToEven; {12#true} is VALID [2020-07-28 17:22:01,314 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 17:22:01,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971615787] [2020-07-28 17:22:01,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:22:01,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-07-28 17:22:01,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676608682] [2020-07-28 17:22:01,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2020-07-28 17:22:01,327 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:22:01,332 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-28 17:22:02,127 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 17:22:02,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-28 17:22:02,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:22:02,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-28 17:22:02,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-28 17:22:02,141 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 5 states. [2020-07-28 17:22:02,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:22:02,593 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-07-28 17:22:02,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 17:22:02,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2020-07-28 17:22:02,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:22:02,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-28 17:22:02,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-07-28 17:22:02,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-28 17:22:02,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-07-28 17:22:02,604 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 12 transitions. [2020-07-28 17:22:03,075 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 17:22:03,081 INFO L225 Difference]: With dead ends: 13 [2020-07-28 17:22:03,081 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:22:03,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-28 17:22:03,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:22:03,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:22:03,103 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:22:03,103 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:22:03,104 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:22:03,104 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:22:03,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:22:03,104 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:22:03,105 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:22:03,105 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:22:03,105 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:22:03,105 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:22:03,106 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:22:03,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:22:03,106 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:22:03,106 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:22:03,106 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:22:03,106 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:22:03,107 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:22:03,107 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:22:03,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:22:03,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:22:03,109 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-07-28 17:22:03,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:22:03,110 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:22:03,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-28 17:22:03,110 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:22:03,110 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:22:03,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:22:03,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:22:03,397 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 17:22:03,397 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:22:03,397 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 17:22:03,397 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:22:03,397 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:22:03,398 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-07-28 17:22:03,398 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 17:22:03,398 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-28 17:22:03,398 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-07-28 17:22:03,402 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:22:03,403 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:22:03,403 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 17:22:03,403 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 17:22:03,403 WARN L170 areAnnotationChecker]: L4-1 has no Hoare annotation [2020-07-28 17:22:03,403 WARN L170 areAnnotationChecker]: L4-1 has no Hoare annotation [2020-07-28 17:22:03,405 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:22:03,406 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:22:03,406 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 17:22:03,410 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:22:03,412 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:22:03,414 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:22:03,415 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:22:03,416 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:22:03,416 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:22:03,416 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:22:03,417 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:22:03,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:22:03 BoogieIcfgContainer [2020-07-28 17:22:03,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:22:03,419 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:22:03,419 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:22:03,420 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:22:03,420 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:21:57" (3/4) ... [2020-07-28 17:22:03,424 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:22:03,435 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-07-28 17:22:03,435 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-07-28 17:22:03,435 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 17:22:03,477 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:22:03,477 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:22:03,480 INFO L168 Benchmark]: Toolchain (without parser) took 6877.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 952.2 MB in the beginning and 1.1 GB in the end (delta: -104.8 MB). Peak memory consumption was 40.4 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:03,481 INFO L168 Benchmark]: CDTParser took 0.29 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 17:22:03,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.32 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:03,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 941.4 MB in the beginning and 1.1 GB in the end (delta: -193.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:03,483 INFO L168 Benchmark]: Boogie Preprocessor took 41.51 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 17:22:03,484 INFO L168 Benchmark]: RCFGBuilder took 967.63 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: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:03,485 INFO L168 Benchmark]: TraceAbstraction took 5438.38 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:03,485 INFO L168 Benchmark]: Witness Printer took 58.09 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 17:22:03,489 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 0.29 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 253.32 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 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 106.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 941.4 MB in the beginning and 1.1 GB in the end (delta: -193.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.51 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 967.63 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: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5438.38 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 11.5 GB. * Witness Printer took 58.09 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.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 17:22:03,498 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:22:03,498 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:22:03,499 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:22:03,499 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 17:22:03,500 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:22:03,500 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:22:03,500 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:22:03,500 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: 5.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.9s, 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, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 0.1s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 45 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...