./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_1012b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 375bec20b72ecdcbd44e4f617a51a92835ad48e7 ................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_1012b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 375bec20b72ecdcbd44e4f617a51a92835ad48e7 ............................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-10-24 23:16:03,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:16:03,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:16:03,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:16:03,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:16:03,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:16:03,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:16:03,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:16:03,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:16:03,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:16:03,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:16:03,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:16:03,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:16:03,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:16:03,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:16:03,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:16:03,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:16:03,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:16:03,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:16:03,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:16:03,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:16:03,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:16:03,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:16:03,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:16:03,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:16:03,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:16:03,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:16:03,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:16:03,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:16:03,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:16:03,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:16:03,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:16:03,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:16:03,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:16:03,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:16:03,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:16:03,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:16:03,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:16:03,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:16:03,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:16:03,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:16:03,746 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 23:16:03,785 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:16:03,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:16:03,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:16:03,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:16:03,790 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:16:03,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:16:03,790 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:16:03,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 23:16:03,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:16:03,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:16:03,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:16:03,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:16:03,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:16:03,793 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:16:03,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:16:03,793 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:16:03,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:16:03,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:16:03,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:16:03,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:16:03,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:16:03,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:16:03,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:16:03,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:16:03,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:16:03,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 23:16:03,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 23:16:03,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:16:03,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:16:03,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375bec20b72ecdcbd44e4f617a51a92835ad48e7 [2020-10-24 23:16:04,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:16:04,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:16:04,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:16:04,300 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:16:04,302 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:16:04,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-10-24 23:16:04,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c611aff7c/c17b74a058774dd39cab056bfb648711/FLAG5245b548a [2020-10-24 23:16:05,033 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:16:05,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-10-24 23:16:05,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c611aff7c/c17b74a058774dd39cab056bfb648711/FLAG5245b548a [2020-10-24 23:16:05,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c611aff7c/c17b74a058774dd39cab056bfb648711 [2020-10-24 23:16:05,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:16:05,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:16:05,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:05,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:16:05,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:16:05,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:05" (1/1) ... [2020-10-24 23:16:05,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c53a1f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:05, skipping insertion in model container [2020-10-24 23:16:05,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:05" (1/1) ... [2020-10-24 23:16:05,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:16:05,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:16:05,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:05,668 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:16:05,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:05,716 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:16:05,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:05 WrapperNode [2020-10-24 23:16:05,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:05,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:05,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:16:05,718 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:16:05,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:05" (1/1) ... [2020-10-24 23:16:05,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:05" (1/1) ... [2020-10-24 23:16:05,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:05,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:16:05,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:16:05,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:16:05,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:05" (1/1) ... [2020-10-24 23:16:05,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:05" (1/1) ... [2020-10-24 23:16:05,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:05" (1/1) ... [2020-10-24 23:16:05,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:05" (1/1) ... [2020-10-24 23:16:05,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:05" (1/1) ... [2020-10-24 23:16:05,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:05" (1/1) ... [2020-10-24 23:16:05,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:05" (1/1) ... [2020-10-24 23:16:05,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:16:05,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:16:05,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:16:05,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:16:05,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:16:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 23:16:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:16:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 23:16:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 23:16:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 23:16:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:16:05,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:16:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 23:16:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:16:06,511 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:16:06,512 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 23:16:06,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:06 BoogieIcfgContainer [2020-10-24 23:16:06,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:16:06,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:16:06,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:16:06,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:16:06,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:16:05" (1/3) ... [2020-10-24 23:16:06,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33886564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:06, skipping insertion in model container [2020-10-24 23:16:06,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:05" (2/3) ... [2020-10-24 23:16:06,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33886564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:06, skipping insertion in model container [2020-10-24 23:16:06,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:06" (3/3) ... [2020-10-24 23:16:06,529 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2020-10-24 23:16:06,546 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:16:06,553 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:16:06,570 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:16:06,619 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:16:06,619 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:16:06,619 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:16:06,619 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:16:06,619 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:16:06,619 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:16:06,619 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:16:06,620 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:16:06,639 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-24 23:16:06,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 23:16:06,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:06,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:06,656 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:06,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:06,664 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-10-24 23:16:06,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:16:06,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506593593] [2020-10-24 23:16:06,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:16:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:16:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:16:06,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506593593] [2020-10-24 23:16:06,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:16:06,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 23:16:06,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021293778] [2020-10-24 23:16:06,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:16:06,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:16:06,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:16:06,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:16:06,879 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-24 23:16:06,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:16:06,899 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-24 23:16:06,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:16:06,901 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-24 23:16:06,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:16:06,911 INFO L225 Difference]: With dead ends: 35 [2020-10-24 23:16:06,911 INFO L226 Difference]: Without dead ends: 15 [2020-10-24 23:16:06,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:16:06,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-24 23:16:06,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-24 23:16:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-24 23:16:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-10-24 23:16:06,954 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-10-24 23:16:06,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:16:06,955 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-10-24 23:16:06,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:16:06,955 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-10-24 23:16:06,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 23:16:06,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:06,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:06,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 23:16:06,956 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:06,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:06,958 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-10-24 23:16:06,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:16:06,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062588044] [2020-10-24 23:16:06,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:16:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:07,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:07,206 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:07,242 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 23:16:07,242 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:16:07,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 23:16:07,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:16:07 BoogieIcfgContainer [2020-10-24 23:16:07,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:16:07,285 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:16:07,285 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:16:07,285 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:16:07,286 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:06" (3/4) ... [2020-10-24 23:16:07,290 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 23:16:07,290 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:16:07,294 INFO L168 Benchmark]: Toolchain (without parser) took 1906.79 ms. Allocated memory was 37.7 MB in the beginning and 56.6 MB in the end (delta: 18.9 MB). Free memory was 15.3 MB in the beginning and 31.1 MB in the end (delta: -15.7 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:07,295 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 37.7 MB. Free memory was 20.4 MB in the beginning and 20.4 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:07,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.58 ms. Allocated memory is still 46.1 MB. Free memory was 32.3 MB in the beginning and 22.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:07,296 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.83 ms. Allocated memory is still 46.1 MB. Free memory was 22.0 MB in the beginning and 20.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:07,297 INFO L168 Benchmark]: Boogie Preprocessor took 61.52 ms. Allocated memory is still 46.1 MB. Free memory was 20.3 MB in the beginning and 30.9 MB in the end (delta: -10.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:07,298 INFO L168 Benchmark]: RCFGBuilder took 686.38 ms. Allocated memory is still 46.1 MB. Free memory was 30.7 MB in the beginning and 25.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:07,299 INFO L168 Benchmark]: TraceAbstraction took 763.98 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 25.3 MB in the beginning and 31.4 MB in the end (delta: -6.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:07,300 INFO L168 Benchmark]: Witness Printer took 6.07 ms. Allocated memory is still 56.6 MB. Free memory was 31.4 MB in the beginning and 31.1 MB in the end (delta: 331.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:07,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 37.7 MB. Free memory was 20.4 MB in the beginning and 20.4 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 304.58 ms. Allocated memory is still 46.1 MB. Free memory was 32.3 MB in the beginning and 22.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.83 ms. Allocated memory is still 46.1 MB. Free memory was 22.0 MB in the beginning and 20.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.52 ms. Allocated memory is still 46.1 MB. Free memory was 20.3 MB in the beginning and 30.9 MB in the end (delta: -10.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * RCFGBuilder took 686.38 ms. Allocated memory is still 46.1 MB. Free memory was 30.7 MB in the beginning and 25.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 763.98 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 25.3 MB in the beginning and 31.4 MB in the end (delta: -6.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Witness Printer took 6.07 ms. Allocated memory is still 56.6 MB. Free memory was 31.4 MB in the beginning and 31.1 MB in the end (delta: 331.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 70, overapproximation of bitwiseAnd at line 40. Possible FailurePath: [L70] double x = -1.0 / 0.0; [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] double res = fabs_double(x); [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1012b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 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=19occurred 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, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-10-24 23:16:10,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:16:10,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:16:10,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:16:10,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:16:10,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:16:10,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:16:10,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:16:10,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:16:10,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:16:10,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:16:10,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:16:10,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:16:10,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:16:10,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:16:10,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:16:10,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:16:10,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:16:10,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:16:10,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:16:10,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:16:10,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:16:10,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:16:10,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:16:10,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:16:10,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:16:10,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:16:10,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:16:10,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:16:10,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:16:10,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:16:10,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:16:10,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:16:10,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:16:10,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:16:10,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:16:10,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:16:10,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:16:10,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:16:10,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:16:10,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:16:10,172 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 23:16:10,227 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:16:10,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:16:10,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:16:10,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:16:10,232 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:16:10,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:16:10,233 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:16:10,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:16:10,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:16:10,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:16:10,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:16:10,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:16:10,236 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 23:16:10,236 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 23:16:10,237 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:16:10,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:16:10,237 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:16:10,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:16:10,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:16:10,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:16:10,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:16:10,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:16:10,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:16:10,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:16:10,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:16:10,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:16:10,241 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 23:16:10,241 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 23:16:10,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:16:10,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:16:10,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 23:16:10,243 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375bec20b72ecdcbd44e4f617a51a92835ad48e7 [2020-10-24 23:16:10,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:16:10,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:16:10,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:16:10,734 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:16:10,735 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:16:10,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-10-24 23:16:10,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08c5c426a/887182414d054cdba55765a83d579b70/FLAGd74587119 [2020-10-24 23:16:11,530 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:16:11,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-10-24 23:16:11,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08c5c426a/887182414d054cdba55765a83d579b70/FLAGd74587119 [2020-10-24 23:16:11,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08c5c426a/887182414d054cdba55765a83d579b70 [2020-10-24 23:16:11,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:16:11,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:16:11,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:11,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:16:11,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:16:11,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:11" (1/1) ... [2020-10-24 23:16:11,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bca0312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:11, skipping insertion in model container [2020-10-24 23:16:11,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:11" (1/1) ... [2020-10-24 23:16:11,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:16:11,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:16:12,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:12,175 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:16:12,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:12,232 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:16:12,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12 WrapperNode [2020-10-24 23:16:12,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:12,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:12,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:16:12,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:16:12,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:12,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:16:12,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:16:12,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:16:12,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:16:12,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:16:12,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:16:12,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:16:12,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:16:12,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-24 23:16:12,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 23:16:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 23:16:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:16:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 23:16:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:16:12,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:16:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 23:16:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:16:12,940 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:16:12,940 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 23:16:12,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:12 BoogieIcfgContainer [2020-10-24 23:16:12,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:16:12,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:16:12,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:16:12,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:16:12,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:16:11" (1/3) ... [2020-10-24 23:16:12,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a7ff4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:12, skipping insertion in model container [2020-10-24 23:16:12,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (2/3) ... [2020-10-24 23:16:12,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a7ff4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:12, skipping insertion in model container [2020-10-24 23:16:12,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:12" (3/3) ... [2020-10-24 23:16:12,955 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2020-10-24 23:16:12,970 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:16:12,977 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:16:12,997 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:16:13,047 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:16:13,048 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:16:13,048 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:16:13,048 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:16:13,048 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:16:13,049 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:16:13,049 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:16:13,049 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:16:13,065 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-24 23:16:13,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 23:16:13,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:13,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:13,075 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:13,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:13,084 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-10-24 23:16:13,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:16:13,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686950911] [2020-10-24 23:16:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 23:16:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:16:13,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 23:16:13,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:16:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:16:13,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:16:13,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:16:13,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686950911] [2020-10-24 23:16:13,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:16:13,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 23:16:13,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790349996] [2020-10-24 23:16:13,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:16:13,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:16:13,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:16:13,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:16:13,347 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-24 23:16:13,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:16:13,364 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-24 23:16:13,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:16:13,365 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-24 23:16:13,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:16:13,376 INFO L225 Difference]: With dead ends: 35 [2020-10-24 23:16:13,376 INFO L226 Difference]: Without dead ends: 15 [2020-10-24 23:16:13,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:16:13,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-24 23:16:13,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-24 23:16:13,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-24 23:16:13,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-10-24 23:16:13,416 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-10-24 23:16:13,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:16:13,416 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-10-24 23:16:13,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:16:13,417 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-10-24 23:16:13,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 23:16:13,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:13,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:13,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 23:16:13,633 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:13,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:13,635 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-10-24 23:16:13,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:16:13,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979436084] [2020-10-24 23:16:13,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 23:16:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:13,858 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:14,031 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:14,085 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 23:16:14,086 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:16:14,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 23:16:14,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:16:14 BoogieIcfgContainer [2020-10-24 23:16:14,323 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:16:14,324 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:16:14,325 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:16:14,325 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:16:14,326 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:12" (3/4) ... [2020-10-24 23:16:14,329 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 23:16:14,422 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 23:16:14,425 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:16:14,429 INFO L168 Benchmark]: Toolchain (without parser) took 2561.67 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.2 MB in the beginning and 30.7 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:14,431 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 37.7 MB. Free memory was 24.3 MB in the beginning and 24.3 MB in the end (delta: 19.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:14,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.92 ms. Allocated memory is still 48.2 MB. Free memory was 24.6 MB in the beginning and 24.8 MB in the end (delta: -236.4 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:14,432 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.09 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 23.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:14,434 INFO L168 Benchmark]: Boogie Preprocessor took 36.23 ms. Allocated memory is still 48.2 MB. Free memory was 23.0 MB in the beginning and 21.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:14,436 INFO L168 Benchmark]: RCFGBuilder took 625.49 ms. Allocated memory is still 48.2 MB. Free memory was 21.5 MB in the beginning and 28.0 MB in the end (delta: -6.5 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:14,440 INFO L168 Benchmark]: TraceAbstraction took 1378.20 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 27.5 MB in the beginning and 33.1 MB in the end (delta: -5.6 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:14,442 INFO L168 Benchmark]: Witness Printer took 101.59 ms. Allocated memory is still 58.7 MB. Free memory was 33.1 MB in the beginning and 30.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:14,451 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 37.7 MB. Free memory was 24.3 MB in the beginning and 24.3 MB in the end (delta: 19.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 359.92 ms. Allocated memory is still 48.2 MB. Free memory was 24.6 MB in the beginning and 24.8 MB in the end (delta: -236.4 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.09 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 23.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.23 ms. Allocated memory is still 48.2 MB. Free memory was 23.0 MB in the beginning and 21.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 625.49 ms. Allocated memory is still 48.2 MB. Free memory was 21.5 MB in the beginning and 28.0 MB in the end (delta: -6.5 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1378.20 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 27.5 MB in the beginning and 33.1 MB in the end (delta: -5.6 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Witness Printer took 101.59 ms. Allocated memory is still 58.7 MB. Free memory was 33.1 MB in the beginning and 30.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L70] double x = -1.0 / 0.0; [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] double res = fabs_double(x); [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1012b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...