./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1130a.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_1130a.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 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 ............................................................................................................................................................................................................................................................................................................... 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_1130a.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 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 ........................................................................................................................................................................................................................................................................................................................... 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 23:16:48,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:16:48,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:16:48,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:16:48,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:16:48,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:16:48,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:16:48,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:16:48,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:16:48,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:16:48,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:16:48,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:16:48,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:16:48,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:16:48,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:16:48,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:16:48,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:16:48,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:16:48,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:16:48,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:16:48,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:16:48,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:16:48,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:16:48,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:16:48,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:16:48,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:16:48,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:16:48,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:16:48,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:16:48,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:16:48,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:16:48,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:16:48,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:16:48,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:16:48,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:16:48,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:16:48,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:16:48,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:16:48,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:16:48,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:16:48,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:16:48,637 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 23:16:48,693 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:16:48,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:16:48,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:16:48,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:16:48,698 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:16:48,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:16:48,698 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:16:48,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 23:16:48,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:16:48,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:16:48,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:16:48,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:16:48,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:16:48,701 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:16:48,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:16:48,701 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:16:48,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:16:48,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:16:48,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:16:48,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:16:48,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:16:48,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:16:48,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:16:48,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:16:48,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:16:48,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 23:16:48,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 23:16:48,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:16:48,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:16:48,705 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 [2020-10-24 23:16:49,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:16:49,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:16:49,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:16:49,188 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:16:49,188 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:16:49,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-10-24 23:16:49,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c76f7c5/2a0b0653103341cc9c1834b3024a33d6/FLAGf0a6a5fc5 [2020-10-24 23:16:49,839 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:16:49,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-10-24 23:16:49,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c76f7c5/2a0b0653103341cc9c1834b3024a33d6/FLAGf0a6a5fc5 [2020-10-24 23:16:50,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c76f7c5/2a0b0653103341cc9c1834b3024a33d6 [2020-10-24 23:16:50,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:16:50,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:16:50,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:50,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:16:50,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:16:50,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:50" (1/1) ... [2020-10-24 23:16:50,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c5726a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:50, skipping insertion in model container [2020-10-24 23:16:50,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:50" (1/1) ... [2020-10-24 23:16:50,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:16:50,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:16:50,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:50,597 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:16:50,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:50,668 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:16:50,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:50 WrapperNode [2020-10-24 23:16:50,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:50,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:50,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:16:50,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:16:50,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:50" (1/1) ... [2020-10-24 23:16:50,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:50" (1/1) ... [2020-10-24 23:16:50,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:50,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:16:50,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:16:50,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:16:50,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:50" (1/1) ... [2020-10-24 23:16:50,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:50" (1/1) ... [2020-10-24 23:16:50,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:50" (1/1) ... [2020-10-24 23:16:50,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:50" (1/1) ... [2020-10-24 23:16:50,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:50" (1/1) ... [2020-10-24 23:16:50,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:50" (1/1) ... [2020-10-24 23:16:50,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:50" (1/1) ... [2020-10-24 23:16:50,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:16:50,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:16:50,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:16:50,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:16:50,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:50" (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 23:16:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 23:16:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:16:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 23:16:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 23:16:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 23:16:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:16:50,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:16:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 23:16:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-24 23:16:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:16:51,746 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:16:51,746 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-24 23:16:51,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:51 BoogieIcfgContainer [2020-10-24 23:16:51,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:16:51,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:16:51,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:16:51,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:16:51,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:16:50" (1/3) ... [2020-10-24 23:16:51,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283595eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:51, skipping insertion in model container [2020-10-24 23:16:51,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:50" (2/3) ... [2020-10-24 23:16:51,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283595eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:51, skipping insertion in model container [2020-10-24 23:16:51,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:51" (3/3) ... [2020-10-24 23:16:51,757 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-10-24 23:16:51,769 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:16:51,774 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:16:51,786 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:16:51,811 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:16:51,811 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:16:51,811 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:16:51,811 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:16:51,811 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:16:51,811 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:16:51,812 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:16:51,812 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:16:51,829 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-10-24 23:16:51,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 23:16:51,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:51,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:51,836 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:51,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:51,843 INFO L82 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2020-10-24 23:16:51,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:16:51,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2580264] [2020-10-24 23:16:51,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:16:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:16:52,009 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 23:16:52,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2580264] [2020-10-24 23:16:52,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:16:52,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 23:16:52,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389732016] [2020-10-24 23:16:52,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:16:52,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:16:52,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:16:52,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:16:52,034 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2020-10-24 23:16:52,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:16:52,061 INFO L93 Difference]: Finished difference Result 120 states and 209 transitions. [2020-10-24 23:16:52,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:16:52,062 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-24 23:16:52,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:16:52,074 INFO L225 Difference]: With dead ends: 120 [2020-10-24 23:16:52,075 INFO L226 Difference]: Without dead ends: 57 [2020-10-24 23:16:52,078 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 23:16:52,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-24 23:16:52,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-24 23:16:52,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-24 23:16:52,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2020-10-24 23:16:52,122 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2020-10-24 23:16:52,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:16:52,123 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2020-10-24 23:16:52,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:16:52,123 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2020-10-24 23:16:52,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 23:16:52,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:52,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:52,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 23:16:52,125 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:52,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:52,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2020-10-24 23:16:52,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:16:52,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364241607] [2020-10-24 23:16:52,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:16:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:52,244 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:52,293 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:52,324 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 23:16:52,325 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:16:52,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 23:16:52,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:16:52 BoogieIcfgContainer [2020-10-24 23:16:52,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:16:52,378 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:16:52,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:16:52,378 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:16:52,379 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:51" (3/4) ... [2020-10-24 23:16:52,382 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 23:16:52,382 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:16:52,385 INFO L168 Benchmark]: Toolchain (without parser) took 2178.01 ms. Allocated memory was 41.9 MB in the beginning and 60.8 MB in the end (delta: 18.9 MB). Free memory was 19.8 MB in the beginning and 42.0 MB in the end (delta: -22.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:52,386 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 41.9 MB. Free memory was 22.9 MB in the beginning and 22.9 MB in the end (delta: 29.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:52,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 438.32 ms. Allocated memory is still 50.3 MB. Free memory was 36.7 MB in the beginning and 23.2 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:52,388 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.50 ms. Allocated memory is still 50.3 MB. Free memory was 23.2 MB in the beginning and 34.4 MB in the end (delta: -11.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:52,388 INFO L168 Benchmark]: Boogie Preprocessor took 91.55 ms. Allocated memory is still 50.3 MB. Free memory was 34.4 MB in the beginning and 32.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:52,389 INFO L168 Benchmark]: RCFGBuilder took 887.19 ms. Allocated memory is still 50.3 MB. Free memory was 32.1 MB in the beginning and 25.7 MB in the end (delta: 6.5 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:52,390 INFO L168 Benchmark]: TraceAbstraction took 627.82 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.2 MB in the beginning and 42.4 MB in the end (delta: -17.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:52,391 INFO L168 Benchmark]: Witness Printer took 4.43 ms. Allocated memory is still 60.8 MB. Free memory was 42.4 MB in the beginning and 42.0 MB in the end (delta: 383.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:52,396 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 41.9 MB. Free memory was 22.9 MB in the beginning and 22.9 MB in the end (delta: 29.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 438.32 ms. Allocated memory is still 50.3 MB. Free memory was 36.7 MB in the beginning and 23.2 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.50 ms. Allocated memory is still 50.3 MB. Free memory was 23.2 MB in the beginning and 34.4 MB in the end (delta: -11.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 91.55 ms. Allocated memory is still 50.3 MB. Free memory was 34.4 MB in the beginning and 32.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 887.19 ms. Allocated memory is still 50.3 MB. Free memory was 32.1 MB in the beginning and 25.7 MB in the end (delta: 6.5 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 627.82 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.2 MB in the beginning and 42.4 MB in the end (delta: -17.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.43 ms. Allocated memory is still 60.8 MB. Free memory was 42.4 MB in the beginning and 42.0 MB in the end (delta: 383.0 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 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, Zero_fmod={9:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1130a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 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=62occurred 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, 24 NumberOfCodeBlocks, 24 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 23:16:54,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:16:54,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:16:55,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:16:55,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:16:55,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:16:55,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:16:55,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:16:55,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:16:55,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:16:55,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:16:55,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:16:55,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:16:55,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:16:55,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:16:55,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:16:55,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:16:55,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:16:55,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:16:55,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:16:55,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:16:55,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:16:55,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:16:55,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:16:55,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:16:55,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:16:55,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:16:55,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:16:55,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:16:55,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:16:55,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:16:55,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:16:55,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:16:55,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:16:55,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:16:55,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:16:55,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:16:55,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:16:55,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:16:55,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:16:55,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:16:55,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 23:16:55,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:16:55,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:16:55,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:16:55,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:16:55,092 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:16:55,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:16:55,093 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:16:55,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:16:55,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:16:55,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:16:55,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:16:55,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:16:55,096 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 23:16:55,096 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 23:16:55,097 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:16:55,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:16:55,097 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:16:55,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:16:55,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:16:55,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:16:55,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:16:55,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:16:55,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:16:55,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:16:55,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:16:55,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:16:55,101 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 23:16:55,102 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 23:16:55,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:16:55,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:16:55,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 23:16:55,103 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 [2020-10-24 23:16:55,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:16:55,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:16:55,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:16:55,568 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:16:55,569 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:16:55,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-10-24 23:16:55,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91472a560/d794e552988747aa8329a21224151d02/FLAGf25401c66 [2020-10-24 23:16:56,263 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:16:56,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-10-24 23:16:56,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91472a560/d794e552988747aa8329a21224151d02/FLAGf25401c66 [2020-10-24 23:16:56,624 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91472a560/d794e552988747aa8329a21224151d02 [2020-10-24 23:16:56,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:16:56,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:16:56,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:56,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:16:56,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:16:56,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:56" (1/1) ... [2020-10-24 23:16:56,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16002cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:56, skipping insertion in model container [2020-10-24 23:16:56,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:56" (1/1) ... [2020-10-24 23:16:56,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:16:56,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:16:56,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:56,982 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:16:57,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:57,077 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:16:57,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57 WrapperNode [2020-10-24 23:16:57,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:57,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:57,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:16:57,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:16:57,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:57,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:57,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:57,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:16:57,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:16:57,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:16:57,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:57,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:57,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:57,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:57,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:57,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:57,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:57,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:16:57,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:16:57,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:16:57,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:16:57,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (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 23:16:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-24 23:16:57,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 23:16:57,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 23:16:57,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:16:57,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-10-24 23:16:57,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 23:16:57,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:16:57,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:16:57,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 23:16:57,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:17:01,221 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:17:01,222 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-24 23:17:01,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:01 BoogieIcfgContainer [2020-10-24 23:17:01,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:17:01,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:17:01,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:17:01,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:17:01,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:16:56" (1/3) ... [2020-10-24 23:17:01,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b50ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:01, skipping insertion in model container [2020-10-24 23:17:01,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (2/3) ... [2020-10-24 23:17:01,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b50ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:01, skipping insertion in model container [2020-10-24 23:17:01,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:01" (3/3) ... [2020-10-24 23:17:01,255 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-10-24 23:17:01,288 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:17:01,302 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:17:01,317 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:17:01,347 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:17:01,347 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:17:01,348 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:17:01,348 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:17:01,348 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:17:01,348 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:17:01,349 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:17:01,349 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:17:01,367 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-10-24 23:17:01,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 23:17:01,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:01,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:01,375 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:01,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:01,382 INFO L82 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2020-10-24 23:17:01,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:01,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80282034] [2020-10-24 23:17:01,401 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 23:17:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:02,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 23:17:02,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:02,580 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 23:17:02,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:02,586 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 23:17:02,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80282034] [2020-10-24 23:17:02,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:02,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 23:17:02,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252503251] [2020-10-24 23:17:02,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:17:02,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:02,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:17:02,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:17:02,613 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2020-10-24 23:17:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:02,640 INFO L93 Difference]: Finished difference Result 120 states and 209 transitions. [2020-10-24 23:17:02,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:17:02,642 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-24 23:17:02,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:02,653 INFO L225 Difference]: With dead ends: 120 [2020-10-24 23:17:02,654 INFO L226 Difference]: Without dead ends: 57 [2020-10-24 23:17:02,661 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 23:17:02,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-24 23:17:02,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-24 23:17:02,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-24 23:17:02,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2020-10-24 23:17:02,706 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2020-10-24 23:17:02,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:02,706 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2020-10-24 23:17:02,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:17:02,707 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2020-10-24 23:17:02,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 23:17:02,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:02,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:02,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 23:17:02,925 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:02,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:02,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2020-10-24 23:17:02,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:02,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616902189] [2020-10-24 23:17:02,929 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 23:17:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:17:04,366 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:17:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:17:05,793 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:17:05,913 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 23:17:05,914 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:17:06,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 23:17:06,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:17:06 BoogieIcfgContainer [2020-10-24 23:17:06,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:17:06,155 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:17:06,155 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:17:06,155 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:17:06,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:01" (3/4) ... [2020-10-24 23:17:06,158 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 23:17:06,213 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 23:17:06,214 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:17:06,216 INFO L168 Benchmark]: Toolchain (without parser) took 9585.43 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 35.4 MB in the beginning and 36.3 MB in the end (delta: -960.4 kB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:06,217 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 41.9 MB. Free memory was 21.7 MB in the beginning and 21.7 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:17:06,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 433.87 ms. Allocated memory is still 58.7 MB. Free memory was 34.8 MB in the beginning and 33.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:06,218 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.52 ms. Allocated memory is still 58.7 MB. Free memory was 33.7 MB in the beginning and 31.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:06,219 INFO L168 Benchmark]: Boogie Preprocessor took 87.51 ms. Allocated memory is still 58.7 MB. Free memory was 31.2 MB in the beginning and 28.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:06,220 INFO L168 Benchmark]: RCFGBuilder took 3993.19 ms. Allocated memory is still 58.7 MB. Free memory was 28.8 MB in the beginning and 24.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:06,221 INFO L168 Benchmark]: TraceAbstraction took 4911.12 ms. Allocated memory is still 75.5 MB. Free memory was 57.1 MB in the beginning and 38.9 MB in the end (delta: 18.2 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:06,222 INFO L168 Benchmark]: Witness Printer took 58.92 ms. Allocated memory is still 75.5 MB. Free memory was 38.9 MB in the beginning and 36.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:06,229 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 41.9 MB. Free memory was 21.7 MB in the beginning and 21.7 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 433.87 ms. Allocated memory is still 58.7 MB. Free memory was 34.8 MB in the beginning and 33.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.52 ms. Allocated memory is still 58.7 MB. Free memory was 33.7 MB in the beginning and 31.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.51 ms. Allocated memory is still 58.7 MB. Free memory was 31.2 MB in the beginning and 28.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3993.19 ms. Allocated memory is still 58.7 MB. Free memory was 28.8 MB in the beginning and 24.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4911.12 ms. Allocated memory is still 75.5 MB. Free memory was 57.1 MB in the beginning and 38.9 MB in the end (delta: 18.2 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. * Witness Printer took 58.92 ms. Allocated memory is still 75.5 MB. Free memory was 38.9 MB in the beginning and 36.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 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: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1.0, Zero_fmod={2:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1130a.c", 3, "reach_error") VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 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=62occurred 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, 2.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 52 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...