./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 c1f4b5c4 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 56df0817616f6c5016a1ac832f32db0c87e1c370 ......................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 56df0817616f6c5016a1ac832f32db0c87e1c370 ....................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-c1f4b5c [2019-12-08 15:54:05,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-08 15:54:05,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-08 15:54:05,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-08 15:54:05,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-08 15:54:05,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-08 15:54:05,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-08 15:54:05,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-08 15:54:05,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-08 15:54:05,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-08 15:54:05,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-08 15:54:05,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-08 15:54:05,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-08 15:54:05,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-08 15:54:05,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-08 15:54:05,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-08 15:54:05,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-08 15:54:05,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-08 15:54:05,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-08 15:54:05,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-08 15:54:05,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-08 15:54:05,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-08 15:54:05,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-08 15:54:05,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-08 15:54:05,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-08 15:54:05,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-08 15:54:05,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-08 15:54:05,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-08 15:54:05,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-08 15:54:05,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-08 15:54:05,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-08 15:54:05,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-08 15:54:05,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-08 15:54:05,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-08 15:54:05,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-08 15:54:05,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-08 15:54:05,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-08 15:54:05,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-08 15:54:05,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-08 15:54:05,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-08 15:54:05,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-08 15:54:05,807 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-08 15:54:05,822 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-08 15:54:05,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-08 15:54:05,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-08 15:54:05,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-08 15:54:05,824 INFO L138 SettingsManager]: * Use SBE=true [2019-12-08 15:54:05,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-08 15:54:05,825 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-08 15:54:05,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-08 15:54:05,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-08 15:54:05,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-08 15:54:05,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-08 15:54:05,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-08 15:54:05,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-08 15:54:05,826 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-08 15:54:05,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-08 15:54:05,826 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-08 15:54:05,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-08 15:54:05,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-08 15:54:05,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-08 15:54:05,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-08 15:54:05,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-08 15:54:05,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:05,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-08 15:54:05,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-08 15:54:05,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-08 15:54:05,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-08 15:54:05,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-08 15:54:05,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-08 15:54:05,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-08 15:54:05,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56df0817616f6c5016a1ac832f32db0c87e1c370 [2019-12-08 15:54:06,221 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-08 15:54:06,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-08 15:54:06,237 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-08 15:54:06,239 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-08 15:54:06,240 INFO L275 PluginConnector]: CDTParser initialized [2019-12-08 15:54:06,240 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2019-12-08 15:54:06,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f7688e4/f08417940e564fc6928accd9c46ce1e1/FLAG01ab455d8 [2019-12-08 15:54:06,749 INFO L306 CDTParser]: Found 1 translation units. [2019-12-08 15:54:06,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2019-12-08 15:54:06,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f7688e4/f08417940e564fc6928accd9c46ce1e1/FLAG01ab455d8 [2019-12-08 15:54:07,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f7688e4/f08417940e564fc6928accd9c46ce1e1 [2019-12-08 15:54:07,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-08 15:54:07,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-08 15:54:07,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:07,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-08 15:54:07,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-08 15:54:07,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:07" (1/1) ... [2019-12-08 15:54:07,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed4fb66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:07, skipping insertion in model container [2019-12-08 15:54:07,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:07" (1/1) ... [2019-12-08 15:54:07,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-08 15:54:07,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-08 15:54:07,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:07,439 INFO L203 MainTranslator]: Completed pre-run [2019-12-08 15:54:07,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:07,544 INFO L208 MainTranslator]: Completed translation [2019-12-08 15:54:07,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:07 WrapperNode [2019-12-08 15:54:07,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:07,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:07,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-08 15:54:07,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-08 15:54:07,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:07" (1/1) ... [2019-12-08 15:54:07,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:07" (1/1) ... [2019-12-08 15:54:07,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:07,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-08 15:54:07,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-08 15:54:07,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-08 15:54:07,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:07" (1/1) ... [2019-12-08 15:54:07,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:07" (1/1) ... [2019-12-08 15:54:07,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:07" (1/1) ... [2019-12-08 15:54:07,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:07" (1/1) ... [2019-12-08 15:54:07,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:07" (1/1) ... [2019-12-08 15:54:07,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:07" (1/1) ... [2019-12-08 15:54:07,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:07" (1/1) ... [2019-12-08 15:54:07,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-08 15:54:07,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-08 15:54:07,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-08 15:54:07,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-08 15:54:07,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:07,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-08 15:54:07,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-08 15:54:07,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-08 15:54:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-08 15:54:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-08 15:54:07,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-08 15:54:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-08 15:54:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-08 15:54:07,957 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-08 15:54:07,958 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-08 15:54:07,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:07 BoogieIcfgContainer [2019-12-08 15:54:07,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-08 15:54:07,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-08 15:54:07,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-08 15:54:07,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-08 15:54:07,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 03:54:07" (1/3) ... [2019-12-08 15:54:07,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c15f8b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:07, skipping insertion in model container [2019-12-08 15:54:07,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:07" (2/3) ... [2019-12-08 15:54:07,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c15f8b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:07, skipping insertion in model container [2019-12-08 15:54:07,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:07" (3/3) ... [2019-12-08 15:54:07,983 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2019-12-08 15:54:08,002 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-08 15:54:08,010 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-08 15:54:08,050 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-08 15:54:08,077 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-08 15:54:08,077 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-08 15:54:08,077 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-08 15:54:08,077 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-08 15:54:08,077 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-08 15:54:08,078 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-08 15:54:08,078 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-08 15:54:08,078 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-08 15:54:08,090 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-12-08 15:54:08,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-08 15:54:08,097 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:08,098 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:08,099 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:08,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:08,104 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2019-12-08 15:54:08,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 15:54:08,112 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59543684] [2019-12-08 15:54:08,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 15:54:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:08,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:08,227 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59543684] [2019-12-08 15:54:08,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:54:08,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-08 15:54:08,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774619764] [2019-12-08 15:54:08,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-08 15:54:08,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-08 15:54:08,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-08 15:54:08,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:08,251 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-12-08 15:54:08,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:54:08,266 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2019-12-08 15:54:08,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-08 15:54:08,268 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-12-08 15:54:08,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:54:08,277 INFO L225 Difference]: With dead ends: 34 [2019-12-08 15:54:08,277 INFO L226 Difference]: Without dead ends: 15 [2019-12-08 15:54:08,280 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:08,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-08 15:54:08,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-08 15:54:08,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-08 15:54:08,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-12-08 15:54:08,315 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2019-12-08 15:54:08,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:54:08,315 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-12-08 15:54:08,316 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-08 15:54:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-12-08 15:54:08,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-08 15:54:08,317 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:08,317 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:08,317 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:08,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:08,318 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2019-12-08 15:54:08,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 15:54:08,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648489277] [2019-12-08 15:54:08,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 15:54:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:08,563 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-08 15:54:08,563 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-08 15:54:08,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 03:54:08 BoogieIcfgContainer [2019-12-08 15:54:08,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-08 15:54:08,605 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-08 15:54:08,605 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-08 15:54:08,606 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-08 15:54:08,607 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:07" (3/4) ... [2019-12-08 15:54:08,612 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-08 15:54:08,613 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-08 15:54:08,617 INFO L168 Benchmark]: Toolchain (without parser) took 1448.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 957.7 MB in the beginning and 1.0 GB in the end (delta: -90.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:08,618 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:08,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -147.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:08,621 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:08,622 INFO L168 Benchmark]: Boogie Preprocessor took 32.69 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:08,623 INFO L168 Benchmark]: RCFGBuilder took 339.08 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:08,624 INFO L168 Benchmark]: TraceAbstraction took 643.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:08,625 INFO L168 Benchmark]: Witness Printer took 7.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:08,639 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 379.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -147.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.69 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 339.08 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 643.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * Witness Printer took 7.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 73]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 68, overapproximation of bitwiseAnd at line 38. Possible FailurePath: [L68] double x = -1.0 / 0.0; [L45] __uint32_t high; [L47] ieee_double_shape_type gh_u; [L48] gh_u.value = (x) [L49] EXPR gh_u.parts.msw [L49] (high) = gh_u.parts.msw [L52] ieee_double_shape_type sh_u; [L53] sh_u.value = (x) [L54] sh_u.parts.msw = (high & 0x7fffffff) [L55] EXPR sh_u.value [L55] (x) = sh_u.value [L57] return x; [L69] double res = fabs_double(x); [L31] __int32_t hx, lx; [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (x) [L35] EXPR ew_u.parts.msw [L35] (hx) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (lx) = ew_u.parts.lsw [L38] hx &= 0x7fffffff [L39] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L40] hx = 0x7ff00000 - hx [L41] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L72] COND TRUE !isinf_double(res) [L73] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 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=18occurred 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-c1f4b5c [2019-12-08 15:54:10,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-08 15:54:10,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-08 15:54:10,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-08 15:54:10,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-08 15:54:10,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-08 15:54:10,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-08 15:54:10,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-08 15:54:10,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-08 15:54:10,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-08 15:54:10,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-08 15:54:10,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-08 15:54:10,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-08 15:54:10,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-08 15:54:10,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-08 15:54:10,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-08 15:54:10,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-08 15:54:10,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-08 15:54:10,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-08 15:54:10,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-08 15:54:10,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-08 15:54:10,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-08 15:54:10,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-08 15:54:10,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-08 15:54:10,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-08 15:54:10,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-08 15:54:10,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-08 15:54:10,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-08 15:54:10,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-08 15:54:10,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-08 15:54:10,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-08 15:54:10,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-08 15:54:10,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-08 15:54:10,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-08 15:54:10,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-08 15:54:10,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-08 15:54:10,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-08 15:54:10,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-08 15:54:10,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-08 15:54:10,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-08 15:54:10,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-08 15:54:10,624 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-08 15:54:10,643 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-08 15:54:10,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-08 15:54:10,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-08 15:54:10,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-08 15:54:10,646 INFO L138 SettingsManager]: * Use SBE=true [2019-12-08 15:54:10,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-08 15:54:10,647 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-08 15:54:10,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-08 15:54:10,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-08 15:54:10,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-08 15:54:10,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-08 15:54:10,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-08 15:54:10,649 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-08 15:54:10,650 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-08 15:54:10,650 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-08 15:54:10,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-08 15:54:10,650 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-08 15:54:10,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-08 15:54:10,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-08 15:54:10,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-08 15:54:10,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-08 15:54:10,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-08 15:54:10,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:10,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-08 15:54:10,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-08 15:54:10,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-08 15:54:10,653 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-08 15:54:10,654 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-08 15:54:10,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-08 15:54:10,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-08 15:54:10,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-08 15:54:10,655 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56df0817616f6c5016a1ac832f32db0c87e1c370 [2019-12-08 15:54:10,974 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-08 15:54:10,987 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-08 15:54:10,991 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-08 15:54:10,992 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-08 15:54:10,992 INFO L275 PluginConnector]: CDTParser initialized [2019-12-08 15:54:10,993 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2019-12-08 15:54:11,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75dc7ffc3/bc63f354f63d43cf99d7b31fc2182e50/FLAGbef493e65 [2019-12-08 15:54:11,489 INFO L306 CDTParser]: Found 1 translation units. [2019-12-08 15:54:11,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2019-12-08 15:54:11,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75dc7ffc3/bc63f354f63d43cf99d7b31fc2182e50/FLAGbef493e65 [2019-12-08 15:54:11,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75dc7ffc3/bc63f354f63d43cf99d7b31fc2182e50 [2019-12-08 15:54:11,912 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-08 15:54:11,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-08 15:54:11,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:11,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-08 15:54:11,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-08 15:54:11,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:11" (1/1) ... [2019-12-08 15:54:11,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657e1985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:11, skipping insertion in model container [2019-12-08 15:54:11,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:11" (1/1) ... [2019-12-08 15:54:11,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-08 15:54:11,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-08 15:54:12,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:12,172 INFO L203 MainTranslator]: Completed pre-run [2019-12-08 15:54:12,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:12,317 INFO L208 MainTranslator]: Completed translation [2019-12-08 15:54:12,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:12 WrapperNode [2019-12-08 15:54:12,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:12,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:12,319 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-08 15:54:12,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-08 15:54:12,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:12" (1/1) ... [2019-12-08 15:54:12,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:12" (1/1) ... [2019-12-08 15:54:12,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:12,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-08 15:54:12,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-08 15:54:12,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-08 15:54:12,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:12" (1/1) ... [2019-12-08 15:54:12,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:12" (1/1) ... [2019-12-08 15:54:12,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:12" (1/1) ... [2019-12-08 15:54:12,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:12" (1/1) ... [2019-12-08 15:54:12,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:12" (1/1) ... [2019-12-08 15:54:12,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:12" (1/1) ... [2019-12-08 15:54:12,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:12" (1/1) ... [2019-12-08 15:54:12,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-08 15:54:12,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-08 15:54:12,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-08 15:54:12,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-08 15:54:12,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:12" (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 [2019-12-08 15:54:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-08 15:54:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-08 15:54:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-08 15:54:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-08 15:54:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-08 15:54:12,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-08 15:54:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-08 15:54:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-08 15:54:12,845 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-08 15:54:12,845 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-08 15:54:12,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:12 BoogieIcfgContainer [2019-12-08 15:54:12,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-08 15:54:12,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-08 15:54:12,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-08 15:54:12,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-08 15:54:12,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 03:54:11" (1/3) ... [2019-12-08 15:54:12,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b9e746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:12, skipping insertion in model container [2019-12-08 15:54:12,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:12" (2/3) ... [2019-12-08 15:54:12,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b9e746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:12, skipping insertion in model container [2019-12-08 15:54:12,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:12" (3/3) ... [2019-12-08 15:54:12,854 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2019-12-08 15:54:12,864 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-08 15:54:12,871 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-08 15:54:12,881 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-08 15:54:12,900 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-08 15:54:12,900 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-08 15:54:12,900 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-08 15:54:12,901 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-08 15:54:12,901 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-08 15:54:12,901 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-08 15:54:12,901 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-08 15:54:12,901 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-08 15:54:12,914 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-12-08 15:54:12,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-08 15:54:12,920 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:12,921 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:12,921 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:12,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:12,926 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2019-12-08 15:54:12,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:54:12,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112514457] [2019-12-08 15:54:12,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-08 15:54:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:13,031 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-08 15:54:13,035 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-08 15:54:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:13,047 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-08 15:54:13,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:13,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112514457] [2019-12-08 15:54:13,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:54:13,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-08 15:54:13,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675733676] [2019-12-08 15:54:13,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-08 15:54:13,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-08 15:54:13,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-08 15:54:13,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:13,075 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-12-08 15:54:13,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:54:13,090 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2019-12-08 15:54:13,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-08 15:54:13,091 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-12-08 15:54:13,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:54:13,100 INFO L225 Difference]: With dead ends: 34 [2019-12-08 15:54:13,100 INFO L226 Difference]: Without dead ends: 15 [2019-12-08 15:54:13,103 INFO L631 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 [2019-12-08 15:54:13,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-08 15:54:13,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-08 15:54:13,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-08 15:54:13,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-12-08 15:54:13,137 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2019-12-08 15:54:13,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:54:13,137 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-12-08 15:54:13,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-08 15:54:13,138 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-12-08 15:54:13,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-08 15:54:13,138 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:13,138 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:13,352 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-08 15:54:13,352 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:13,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:13,353 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2019-12-08 15:54:13,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:54:13,357 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772280218] [2019-12-08 15:54:13,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-08 15:54:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:13,700 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-08 15:54:13,701 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-08 15:54:13,902 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-08 15:54:13,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 03:54:13 BoogieIcfgContainer [2019-12-08 15:54:13,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-08 15:54:13,934 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-08 15:54:13,935 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-08 15:54:13,935 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-08 15:54:13,935 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:12" (3/4) ... [2019-12-08 15:54:13,938 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-08 15:54:14,031 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-12-08 15:54:14,032 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-08 15:54:14,034 INFO L168 Benchmark]: Toolchain (without parser) took 2119.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -107.4 MB). Peak memory consumption was 41.5 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:14,035 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:14,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 402.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -185.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:14,036 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:14,036 INFO L168 Benchmark]: Boogie Preprocessor took 39.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:14,037 INFO L168 Benchmark]: RCFGBuilder took 444.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:14,038 INFO L168 Benchmark]: TraceAbstraction took 1086.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:14,038 INFO L168 Benchmark]: Witness Printer took 97.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:14,041 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 402.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -185.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 444.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1086.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 11.5 GB. * Witness Printer took 97.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 73]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L68] double x = -1.0 / 0.0; [L45] __uint32_t high; [L47] ieee_double_shape_type gh_u; [L48] gh_u.value = (x) [L49] EXPR gh_u.parts.msw [L49] (high) = gh_u.parts.msw [L52] ieee_double_shape_type sh_u; [L53] sh_u.value = (x) [L54] sh_u.parts.msw = (high & 0x7fffffff) [L55] EXPR sh_u.value [L55] (x) = sh_u.value [L57] return x; [L69] double res = fabs_double(x); [L31] __int32_t hx, lx; [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (x) [L35] EXPR ew_u.parts.msw [L35] (hx) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (lx) = ew_u.parts.lsw [L38] hx &= 0x7fffffff [L39] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L40] hx = 0x7ff00000 - hx [L41] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L72] COND TRUE !isinf_double(res) [L73] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 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=18occurred 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, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...