./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c1f4b5c4 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1032d.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 bc388f4eaa6aadf687b7d35c78a026571921b2b6 ............................................................................................................................................................................................................................................................................................ 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 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1032d.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 bc388f4eaa6aadf687b7d35c78a026571921b2b6 ...................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-c1f4b5c [2019-12-08 15:54:15,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-08 15:54:15,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-08 15:54:15,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-08 15:54:15,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-08 15:54:15,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-08 15:54:15,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-08 15:54:15,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-08 15:54:15,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-08 15:54:15,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-08 15:54:15,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-08 15:54:15,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-08 15:54:15,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-08 15:54:15,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-08 15:54:15,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-08 15:54:15,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-08 15:54:15,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-08 15:54:15,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-08 15:54:15,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-08 15:54:15,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-08 15:54:15,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-08 15:54:15,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-08 15:54:15,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-08 15:54:15,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-08 15:54:15,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-08 15:54:15,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-08 15:54:15,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-08 15:54:15,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-08 15:54:15,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-08 15:54:15,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-08 15:54:15,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-08 15:54:15,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-08 15:54:15,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-08 15:54:15,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-08 15:54:15,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-08 15:54:15,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-08 15:54:15,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-08 15:54:15,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-08 15:54:15,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-08 15:54:15,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-08 15:54:15,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-08 15:54:15,719 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-08 15:54:15,750 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-08 15:54:15,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-08 15:54:15,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-08 15:54:15,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-08 15:54:15,752 INFO L138 SettingsManager]: * Use SBE=true [2019-12-08 15:54:15,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-08 15:54:15,753 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-08 15:54:15,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-08 15:54:15,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-08 15:54:15,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-08 15:54:15,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-08 15:54:15,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-08 15:54:15,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-08 15:54:15,756 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-08 15:54:15,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-08 15:54:15,756 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-08 15:54:15,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-08 15:54:15,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-08 15:54:15,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-08 15:54:15,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-08 15:54:15,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-08 15:54:15,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:15,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-08 15:54:15,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-08 15:54:15,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-08 15:54:15,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-08 15:54:15,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-08 15:54:15,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-08 15:54:15,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-08 15:54:15,759 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 -> bc388f4eaa6aadf687b7d35c78a026571921b2b6 [2019-12-08 15:54:16,099 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-08 15:54:16,116 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-08 15:54:16,121 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-08 15:54:16,122 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-08 15:54:16,123 INFO L275 PluginConnector]: CDTParser initialized [2019-12-08 15:54:16,124 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2019-12-08 15:54:16,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ba427ea2/595fef7da70c494eac530a4ce6c9f861/FLAGbfa2cf5f2 [2019-12-08 15:54:16,705 INFO L306 CDTParser]: Found 1 translation units. [2019-12-08 15:54:16,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2019-12-08 15:54:16,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ba427ea2/595fef7da70c494eac530a4ce6c9f861/FLAGbfa2cf5f2 [2019-12-08 15:54:17,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ba427ea2/595fef7da70c494eac530a4ce6c9f861 [2019-12-08 15:54:17,049 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-08 15:54:17,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-08 15:54:17,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:17,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-08 15:54:17,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-08 15:54:17,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:17" (1/1) ... [2019-12-08 15:54:17,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d8606ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:17, skipping insertion in model container [2019-12-08 15:54:17,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:17" (1/1) ... [2019-12-08 15:54:17,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-08 15:54:17,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-08 15:54:17,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:17,316 INFO L203 MainTranslator]: Completed pre-run [2019-12-08 15:54:17,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:17,430 INFO L208 MainTranslator]: Completed translation [2019-12-08 15:54:17,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:17 WrapperNode [2019-12-08 15:54:17,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:17,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:17,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-08 15:54:17,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-08 15:54:17,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:17" (1/1) ... [2019-12-08 15:54:17,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:17" (1/1) ... [2019-12-08 15:54:17,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:17,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-08 15:54:17,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-08 15:54:17,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-08 15:54:17,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:17" (1/1) ... [2019-12-08 15:54:17,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:17" (1/1) ... [2019-12-08 15:54:17,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:17" (1/1) ... [2019-12-08 15:54:17,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:17" (1/1) ... [2019-12-08 15:54:17,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:17" (1/1) ... [2019-12-08 15:54:17,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:17" (1/1) ... [2019-12-08 15:54:17,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:17" (1/1) ... [2019-12-08 15:54:17,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-08 15:54:17,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-08 15:54:17,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-08 15:54:17,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-08 15:54:17,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:17" (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 [2019-12-08 15:54:17,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-08 15:54:17,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-08 15:54:17,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-08 15:54:17,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-08 15:54:17,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-08 15:54:17,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-08 15:54:17,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-08 15:54:17,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-08 15:54:17,963 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-08 15:54:17,964 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-08 15:54:17,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:17 BoogieIcfgContainer [2019-12-08 15:54:17,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-08 15:54:17,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-08 15:54:17,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-08 15:54:17,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-08 15:54:17,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 03:54:17" (1/3) ... [2019-12-08 15:54:17,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c011452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:17, skipping insertion in model container [2019-12-08 15:54:17,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:17" (2/3) ... [2019-12-08 15:54:17,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c011452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:17, skipping insertion in model container [2019-12-08 15:54:17,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:17" (3/3) ... [2019-12-08 15:54:17,974 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2019-12-08 15:54:17,985 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-08 15:54:18,000 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-08 15:54:18,026 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-08 15:54:18,051 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-08 15:54:18,051 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-08 15:54:18,052 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-08 15:54:18,052 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-08 15:54:18,052 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-08 15:54:18,052 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-08 15:54:18,052 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-08 15:54:18,052 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-08 15:54:18,069 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-12-08 15:54:18,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-08 15:54:18,076 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:18,077 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:18,077 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:18,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:18,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2019-12-08 15:54:18,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 15:54:18,092 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380564432] [2019-12-08 15:54:18,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 15:54:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:18,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:18,200 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380564432] [2019-12-08 15:54:18,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:54:18,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-08 15:54:18,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920257916] [2019-12-08 15:54:18,207 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-08 15:54:18,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-08 15:54:18,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-08 15:54:18,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:18,223 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-12-08 15:54:18,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:54:18,241 INFO L93 Difference]: Finished difference Result 56 states and 84 transitions. [2019-12-08 15:54:18,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-08 15:54:18,243 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-12-08 15:54:18,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:54:18,254 INFO L225 Difference]: With dead ends: 56 [2019-12-08 15:54:18,255 INFO L226 Difference]: Without dead ends: 26 [2019-12-08 15:54:18,259 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:18,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-08 15:54:18,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-08 15:54:18,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-08 15:54:18,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-12-08 15:54:18,295 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2019-12-08 15:54:18,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:54:18,296 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-12-08 15:54:18,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-08 15:54:18,296 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2019-12-08 15:54:18,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-08 15:54:18,297 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:18,297 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:18,297 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:18,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:18,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2019-12-08 15:54:18,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 15:54:18,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279989547] [2019-12-08 15:54:18,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 15:54:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:18,611 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-08 15:54:18,612 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-08 15:54:18,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 03:54:18 BoogieIcfgContainer [2019-12-08 15:54:18,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-08 15:54:18,664 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-08 15:54:18,664 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-08 15:54:18,665 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-08 15:54:18,665 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:17" (3/4) ... [2019-12-08 15:54:18,671 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-08 15:54:18,671 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-08 15:54:18,676 INFO L168 Benchmark]: Toolchain (without parser) took 1622.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 956.3 MB in the beginning and 1.0 GB in the end (delta: -92.4 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:18,677 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:18,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -156.9 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:18,681 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.53 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. [2019-12-08 15:54:18,682 INFO L168 Benchmark]: Boogie Preprocessor took 41.00 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. [2019-12-08 15:54:18,683 INFO L168 Benchmark]: RCFGBuilder took 446.53 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: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:18,685 INFO L168 Benchmark]: TraceAbstraction took 697.11 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: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:18,686 INFO L168 Benchmark]: Witness Printer took 7.47 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:18,703 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 379.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -156.9 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.53 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. * Boogie Preprocessor took 41.00 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 446.53 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: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 697.11 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: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. * Witness Printer took 7.47 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 31, overapproximation of bitwiseOr at line 73, overapproximation of someBinaryArithmeticDOUBLEoperation at line 86, overapproximation of bitwiseAnd at line 72. Possible FailurePath: [L86] double x = -1.0 / 0.0; [L15] __int32_t msw, exponent_less_1023; [L16] __uint32_t lsw; [L18] ieee_double_shape_type ew_u; [L19] ew_u.value = (x) [L20] EXPR ew_u.parts.msw [L20] (msw) = ew_u.parts.msw [L21] EXPR ew_u.parts.lsw [L21] (lsw) = ew_u.parts.lsw [L23] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L24] COND TRUE exponent_less_1023 < 20 [L25] COND FALSE !(exponent_less_1023 < 0) [L31] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L32] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L33] return x; [L87] double res = round_double(x); [L65] __int32_t hx, lx; [L67] ieee_double_shape_type ew_u; [L68] ew_u.value = (x) [L69] EXPR ew_u.parts.msw [L69] (hx) = ew_u.parts.msw [L70] EXPR ew_u.parts.lsw [L70] (lx) = ew_u.parts.lsw [L72] hx &= 0x7fffffff [L73] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L74] hx = 0x7ff00000 - hx [L75] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L91] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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-c1f4b5c [2019-12-08 15:54:20,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-08 15:54:20,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-08 15:54:20,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-08 15:54:20,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-08 15:54:20,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-08 15:54:20,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-08 15:54:20,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-08 15:54:20,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-08 15:54:20,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-08 15:54:20,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-08 15:54:20,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-08 15:54:20,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-08 15:54:20,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-08 15:54:20,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-08 15:54:20,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-08 15:54:20,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-08 15:54:20,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-08 15:54:20,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-08 15:54:20,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-08 15:54:20,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-08 15:54:20,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-08 15:54:20,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-08 15:54:20,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-08 15:54:20,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-08 15:54:20,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-08 15:54:20,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-08 15:54:20,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-08 15:54:20,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-08 15:54:20,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-08 15:54:20,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-08 15:54:20,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-08 15:54:20,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-08 15:54:20,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-08 15:54:20,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-08 15:54:20,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-08 15:54:20,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-08 15:54:20,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-08 15:54:20,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-08 15:54:20,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-08 15:54:20,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-08 15:54:20,895 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-08 15:54:20,918 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-08 15:54:20,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-08 15:54:20,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-08 15:54:20,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-08 15:54:20,920 INFO L138 SettingsManager]: * Use SBE=true [2019-12-08 15:54:20,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-08 15:54:20,920 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-08 15:54:20,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-08 15:54:20,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-08 15:54:20,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-08 15:54:20,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-08 15:54:20,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-08 15:54:20,922 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-08 15:54:20,922 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-08 15:54:20,922 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-08 15:54:20,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-08 15:54:20,923 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-08 15:54:20,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-08 15:54:20,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-08 15:54:20,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-08 15:54:20,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-08 15:54:20,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-08 15:54:20,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:20,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-08 15:54:20,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-08 15:54:20,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-08 15:54:20,925 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-08 15:54:20,925 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-08 15:54:20,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-08 15:54:20,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-08 15:54:20,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-08 15:54:20,926 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 -> bc388f4eaa6aadf687b7d35c78a026571921b2b6 [2019-12-08 15:54:21,251 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-08 15:54:21,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-08 15:54:21,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-08 15:54:21,281 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-08 15:54:21,282 INFO L275 PluginConnector]: CDTParser initialized [2019-12-08 15:54:21,283 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2019-12-08 15:54:21,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c5c9dba7/5c413f7a43334ba7a53d22904bc2d5a9/FLAG2e89ac208 [2019-12-08 15:54:21,875 INFO L306 CDTParser]: Found 1 translation units. [2019-12-08 15:54:21,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2019-12-08 15:54:21,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c5c9dba7/5c413f7a43334ba7a53d22904bc2d5a9/FLAG2e89ac208 [2019-12-08 15:54:22,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c5c9dba7/5c413f7a43334ba7a53d22904bc2d5a9 [2019-12-08 15:54:22,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-08 15:54:22,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-08 15:54:22,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:22,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-08 15:54:22,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-08 15:54:22,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:22" (1/1) ... [2019-12-08 15:54:22,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35937a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:22, skipping insertion in model container [2019-12-08 15:54:22,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:22" (1/1) ... [2019-12-08 15:54:22,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-08 15:54:22,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-08 15:54:22,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:22,491 INFO L203 MainTranslator]: Completed pre-run [2019-12-08 15:54:22,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:22,608 INFO L208 MainTranslator]: Completed translation [2019-12-08 15:54:22,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:22 WrapperNode [2019-12-08 15:54:22,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:22,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:22,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-08 15:54:22,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-08 15:54:22,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:22" (1/1) ... [2019-12-08 15:54:22,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:22" (1/1) ... [2019-12-08 15:54:22,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:22,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-08 15:54:22,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-08 15:54:22,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-08 15:54:22,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:22" (1/1) ... [2019-12-08 15:54:22,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:22" (1/1) ... [2019-12-08 15:54:22,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:22" (1/1) ... [2019-12-08 15:54:22,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:22" (1/1) ... [2019-12-08 15:54:22,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:22" (1/1) ... [2019-12-08 15:54:22,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:22" (1/1) ... [2019-12-08 15:54:22,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:22" (1/1) ... [2019-12-08 15:54:22,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-08 15:54:22,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-08 15:54:22,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-08 15:54:22,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-08 15:54:22,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:22" (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 [2019-12-08 15:54:22,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-08 15:54:22,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-08 15:54:22,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-08 15:54:22,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-08 15:54:22,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-08 15:54:22,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-08 15:54:22,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-08 15:54:22,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-08 15:54:23,254 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-08 15:54:23,255 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-08 15:54:23,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:23 BoogieIcfgContainer [2019-12-08 15:54:23,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-08 15:54:23,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-08 15:54:23,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-08 15:54:23,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-08 15:54:23,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 03:54:22" (1/3) ... [2019-12-08 15:54:23,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d695b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:23, skipping insertion in model container [2019-12-08 15:54:23,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:22" (2/3) ... [2019-12-08 15:54:23,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d695b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:23, skipping insertion in model container [2019-12-08 15:54:23,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:23" (3/3) ... [2019-12-08 15:54:23,264 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2019-12-08 15:54:23,274 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-08 15:54:23,281 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-08 15:54:23,291 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-08 15:54:23,312 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-08 15:54:23,312 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-08 15:54:23,312 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-08 15:54:23,313 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-08 15:54:23,313 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-08 15:54:23,313 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-08 15:54:23,313 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-08 15:54:23,313 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-08 15:54:23,326 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-12-08 15:54:23,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-08 15:54:23,332 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:23,333 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:23,334 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:23,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:23,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2019-12-08 15:54:23,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:54:23,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692485667] [2019-12-08 15:54:23,349 INFO L94 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 [2019-12-08 15:54:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:23,449 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-08 15:54:23,453 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-08 15:54:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:23,467 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-08 15:54:23,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:23,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692485667] [2019-12-08 15:54:23,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:54:23,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-08 15:54:23,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129410706] [2019-12-08 15:54:23,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-08 15:54:23,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-08 15:54:23,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-08 15:54:23,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:23,497 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-12-08 15:54:23,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:54:23,518 INFO L93 Difference]: Finished difference Result 56 states and 84 transitions. [2019-12-08 15:54:23,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-08 15:54:23,519 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-12-08 15:54:23,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:54:23,531 INFO L225 Difference]: With dead ends: 56 [2019-12-08 15:54:23,531 INFO L226 Difference]: Without dead ends: 26 [2019-12-08 15:54:23,534 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:23,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-08 15:54:23,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-08 15:54:23,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-08 15:54:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-12-08 15:54:23,573 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2019-12-08 15:54:23,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:54:23,573 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-12-08 15:54:23,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-08 15:54:23,573 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2019-12-08 15:54:23,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-08 15:54:23,574 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:23,574 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:23,787 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-08 15:54:23,788 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:23,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:23,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2019-12-08 15:54:23,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:54:23,790 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400527744] [2019-12-08 15:54:23,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-08 15:54:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:23,979 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-08 15:54:23,982 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-08 15:54:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:24,146 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-08 15:54:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:24,351 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400527744] [2019-12-08 15:54:24,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:54:24,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-12-08 15:54:24,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16890677] [2019-12-08 15:54:24,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-08 15:54:24,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-08 15:54:24,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-08 15:54:24,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-08 15:54:24,355 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 8 states. [2019-12-08 15:54:24,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:54:24,676 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2019-12-08 15:54:24,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-08 15:54:24,677 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-12-08 15:54:24,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:54:24,678 INFO L225 Difference]: With dead ends: 34 [2019-12-08 15:54:24,678 INFO L226 Difference]: Without dead ends: 16 [2019-12-08 15:54:24,679 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-12-08 15:54:24,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-08 15:54:24,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-08 15:54:24,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-08 15:54:24,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2019-12-08 15:54:24,685 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2019-12-08 15:54:24,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:54:24,685 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2019-12-08 15:54:24,685 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-08 15:54:24,686 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2019-12-08 15:54:24,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-08 15:54:24,686 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:24,687 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:24,900 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-08 15:54:24,901 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:24,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:24,901 INFO L82 PathProgramCache]: Analyzing trace with hash 709099857, now seen corresponding path program 1 times [2019-12-08 15:54:24,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:54:24,903 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719734247] [2019-12-08 15:54:24,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-08 15:54:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:25,309 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-08 15:54:25,309 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-08 15:54:25,510 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-08 15:54:25,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 03:54:25 BoogieIcfgContainer [2019-12-08 15:54:25,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-08 15:54:25,537 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-08 15:54:25,537 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-08 15:54:25,537 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-08 15:54:25,538 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:23" (3/4) ... [2019-12-08 15:54:25,539 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-08 15:54:25,591 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-12-08 15:54:25,591 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-08 15:54:25,595 INFO L168 Benchmark]: Toolchain (without parser) took 3398.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 957.7 MB in the beginning and 1.0 GB in the end (delta: -66.9 MB). Peak memory consumption was 73.6 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:25,596 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:25,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -173.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:25,597 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.52 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. [2019-12-08 15:54:25,598 INFO L168 Benchmark]: Boogie Preprocessor took 37.29 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:25,599 INFO L168 Benchmark]: RCFGBuilder took 549.40 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: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:25,599 INFO L168 Benchmark]: TraceAbstraction took 2278.71 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: 73.7 MB). Peak memory consumption was 73.7 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:25,600 INFO L168 Benchmark]: Witness Printer took 54.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:25,606 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 412.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -173.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.52 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. * Boogie Preprocessor took 37.29 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 549.40 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: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2278.71 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: 73.7 MB). Peak memory consumption was 73.7 MB. Max. memory is 11.5 GB. * Witness Printer took 54.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 91]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L86] double x = -1.0 / 0.0; [L15] __int32_t msw, exponent_less_1023; [L16] __uint32_t lsw; [L18] ieee_double_shape_type ew_u; [L19] ew_u.value = (x) [L20] EXPR ew_u.parts.msw [L20] (msw) = ew_u.parts.msw [L21] EXPR ew_u.parts.lsw [L21] (lsw) = ew_u.parts.lsw [L23] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L24] COND FALSE !(exponent_less_1023 < 20) [L38] COND TRUE exponent_less_1023 > 51 [L39] COND TRUE exponent_less_1023 == 1024 [L40] return x + x; [L87] double res = round_double(x); [L65] __int32_t hx, lx; [L67] ieee_double_shape_type ew_u; [L68] ew_u.value = (x) [L69] EXPR ew_u.parts.msw [L69] (hx) = ew_u.parts.msw [L70] EXPR ew_u.parts.lsw [L70] (lx) = ew_u.parts.lsw [L72] hx &= 0x7fffffff [L73] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L74] hx = 0x7ff00000 - hx [L75] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L91] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 44 SDslu, 6 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 5 QuantifiedInterpolants, 2430 SizeOfPredicates, 8 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...