./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 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_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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa2086ab05aa915f1fa31296bc02fdb3a78fa087 ..................................................................................................................................................................................................................................................................................................... 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_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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa2086ab05aa915f1fa31296bc02fdb3a78fa087 ................................................................................................................................................................................................................................................................................................................... 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 15:54:46,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-08 15:54:46,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-08 15:54:46,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-08 15:54:46,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-08 15:54:46,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-08 15:54:46,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-08 15:54:46,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-08 15:54:46,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-08 15:54:46,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-08 15:54:46,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-08 15:54:46,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-08 15:54:46,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-08 15:54:46,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-08 15:54:46,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-08 15:54:46,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-08 15:54:46,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-08 15:54:46,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-08 15:54:46,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-08 15:54:46,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-08 15:54:46,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-08 15:54:46,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-08 15:54:46,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-08 15:54:46,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-08 15:54:46,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-08 15:54:46,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-08 15:54:46,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-08 15:54:46,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-08 15:54:46,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-08 15:54:46,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-08 15:54:46,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-08 15:54:46,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-08 15:54:46,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-08 15:54:46,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-08 15:54:46,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-08 15:54:46,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-08 15:54:46,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-08 15:54:46,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-08 15:54:46,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-08 15:54:46,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-08 15:54:46,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-08 15:54:46,830 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-08 15:54:46,858 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-08 15:54:46,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-08 15:54:46,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-08 15:54:46,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-08 15:54:46,862 INFO L138 SettingsManager]: * Use SBE=true [2019-12-08 15:54:46,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-08 15:54:46,862 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-08 15:54:46,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-08 15:54:46,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-08 15:54:46,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-08 15:54:46,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-08 15:54:46,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-08 15:54:46,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-08 15:54:46,865 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-08 15:54:46,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-08 15:54:46,865 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-08 15:54:46,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-08 15:54:46,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-08 15:54:46,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-08 15:54:46,866 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-08 15:54:46,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-08 15:54:46,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:46,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-08 15:54:46,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-08 15:54:46,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-08 15:54:46,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-08 15:54:46,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-08 15:54:46,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-08 15:54:46,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-08 15:54:46,868 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 -> aa2086ab05aa915f1fa31296bc02fdb3a78fa087 [2019-12-08 15:54:47,199 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-08 15:54:47,216 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-08 15:54:47,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-08 15:54:47,223 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-08 15:54:47,224 INFO L275 PluginConnector]: CDTParser initialized [2019-12-08 15:54:47,225 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2019-12-08 15:54:47,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcba4eb0f/feb97a44410946e5bf39605146cea372/FLAG1d3520163 [2019-12-08 15:54:47,772 INFO L306 CDTParser]: Found 1 translation units. [2019-12-08 15:54:47,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2019-12-08 15:54:47,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcba4eb0f/feb97a44410946e5bf39605146cea372/FLAG1d3520163 [2019-12-08 15:54:48,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcba4eb0f/feb97a44410946e5bf39605146cea372 [2019-12-08 15:54:48,152 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-08 15:54:48,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-08 15:54:48,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:48,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-08 15:54:48,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-08 15:54:48,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:48" (1/1) ... [2019-12-08 15:54:48,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33605376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:48, skipping insertion in model container [2019-12-08 15:54:48,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:48" (1/1) ... [2019-12-08 15:54:48,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-08 15:54:48,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-08 15:54:48,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:48,525 INFO L203 MainTranslator]: Completed pre-run [2019-12-08 15:54:48,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:48,608 INFO L208 MainTranslator]: Completed translation [2019-12-08 15:54:48,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:48 WrapperNode [2019-12-08 15:54:48,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:48,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:48,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-08 15:54:48,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-08 15:54:48,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:48" (1/1) ... [2019-12-08 15:54:48,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:48" (1/1) ... [2019-12-08 15:54:48,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:48,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-08 15:54:48,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-08 15:54:48,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-08 15:54:48,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:48" (1/1) ... [2019-12-08 15:54:48,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:48" (1/1) ... [2019-12-08 15:54:48,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:48" (1/1) ... [2019-12-08 15:54:48,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:48" (1/1) ... [2019-12-08 15:54:48,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:48" (1/1) ... [2019-12-08 15:54:48,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:48" (1/1) ... [2019-12-08 15:54:48,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:48" (1/1) ... [2019-12-08 15:54:48,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-08 15:54:48,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-08 15:54:48,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-08 15:54:48,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-08 15:54:48,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:48" (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 15:54:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-08 15:54:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-08 15:54:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-08 15:54:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-08 15:54:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-08 15:54:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-08 15:54:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-08 15:54:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-12-08 15:54:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-08 15:54:49,371 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-08 15:54:49,372 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-12-08 15:54:49,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:49 BoogieIcfgContainer [2019-12-08 15:54:49,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-08 15:54:49,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-08 15:54:49,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-08 15:54:49,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-08 15:54:49,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 03:54:48" (1/3) ... [2019-12-08 15:54:49,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1434701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:49, skipping insertion in model container [2019-12-08 15:54:49,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:48" (2/3) ... [2019-12-08 15:54:49,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1434701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:49, skipping insertion in model container [2019-12-08 15:54:49,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:49" (3/3) ... [2019-12-08 15:54:49,381 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2019-12-08 15:54:49,391 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-08 15:54:49,399 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-08 15:54:49,411 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-08 15:54:49,433 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-08 15:54:49,433 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-08 15:54:49,434 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-08 15:54:49,434 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-08 15:54:49,434 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-08 15:54:49,434 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-08 15:54:49,434 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-08 15:54:49,434 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-08 15:54:49,450 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2019-12-08 15:54:49,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-08 15:54:49,457 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:49,458 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:49,458 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:49,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:49,464 INFO L82 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2019-12-08 15:54:49,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 15:54:49,472 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136284090] [2019-12-08 15:54:49,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 15:54:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:49,598 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 15:54:49,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136284090] [2019-12-08 15:54:49,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:54:49,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-08 15:54:49,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352097352] [2019-12-08 15:54:49,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-08 15:54:49,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-08 15:54:49,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-08 15:54:49,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:49,624 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2019-12-08 15:54:49,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:54:49,650 INFO L93 Difference]: Finished difference Result 119 states and 208 transitions. [2019-12-08 15:54:49,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-08 15:54:49,652 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-12-08 15:54:49,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:54:49,663 INFO L225 Difference]: With dead ends: 119 [2019-12-08 15:54:49,663 INFO L226 Difference]: Without dead ends: 57 [2019-12-08 15:54:49,667 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 15:54:49,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-12-08 15:54:49,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-12-08 15:54:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-12-08 15:54:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2019-12-08 15:54:49,706 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2019-12-08 15:54:49,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:54:49,706 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2019-12-08 15:54:49,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-08 15:54:49,707 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2019-12-08 15:54:49,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-08 15:54:49,707 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:49,708 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:49,708 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:49,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:49,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2019-12-08 15:54:49,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 15:54:49,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818374158] [2019-12-08 15:54:49,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 15:54:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:49,876 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-08 15:54:49,877 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-08 15:54:49,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 03:54:49 BoogieIcfgContainer [2019-12-08 15:54:49,927 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-08 15:54:49,927 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-08 15:54:49,928 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-08 15:54:49,928 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-08 15:54:49,929 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:49" (3/4) ... [2019-12-08 15:54:49,932 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-08 15:54:49,932 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-08 15:54:49,934 INFO L168 Benchmark]: Toolchain (without parser) took 1780.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 955.0 MB in the beginning and 997.6 MB in the end (delta: -42.6 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:49,935 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:49,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 455.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -116.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:49,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.20 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:49,938 INFO L168 Benchmark]: Boogie Preprocessor took 42.35 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 15:54:49,938 INFO L168 Benchmark]: RCFGBuilder took 643.28 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: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:49,939 INFO L168 Benchmark]: TraceAbstraction took 552.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 997.6 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:49,940 INFO L168 Benchmark]: Witness Printer took 4.79 ms. Allocated memory is still 1.1 GB. Free memory is still 997.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:49,944 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 455.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -116.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 77.20 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.35 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 643.28 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: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 552.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 997.6 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.79 ms. Allocated memory is still 1.1 GB. Free memory is still 997.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={3:0}] [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={3:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={3:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={3:0}] [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, Zero_fmod={3:0}] [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() VAL [one_fmod=1, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 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=61occurred 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, 0.0s 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, 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 15:54:51,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-08 15:54:51,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-08 15:54:51,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-08 15:54:51,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-08 15:54:51,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-08 15:54:51,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-08 15:54:52,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-08 15:54:52,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-08 15:54:52,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-08 15:54:52,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-08 15:54:52,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-08 15:54:52,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-08 15:54:52,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-08 15:54:52,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-08 15:54:52,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-08 15:54:52,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-08 15:54:52,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-08 15:54:52,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-08 15:54:52,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-08 15:54:52,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-08 15:54:52,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-08 15:54:52,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-08 15:54:52,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-08 15:54:52,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-08 15:54:52,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-08 15:54:52,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-08 15:54:52,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-08 15:54:52,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-08 15:54:52,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-08 15:54:52,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-08 15:54:52,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-08 15:54:52,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-08 15:54:52,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-08 15:54:52,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-08 15:54:52,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-08 15:54:52,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-08 15:54:52,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-08 15:54:52,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-08 15:54:52,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-08 15:54:52,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-08 15:54:52,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-08 15:54:52,076 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-08 15:54:52,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-08 15:54:52,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-08 15:54:52,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-08 15:54:52,078 INFO L138 SettingsManager]: * Use SBE=true [2019-12-08 15:54:52,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-08 15:54:52,078 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-08 15:54:52,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-08 15:54:52,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-08 15:54:52,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-08 15:54:52,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-08 15:54:52,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-08 15:54:52,080 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-08 15:54:52,080 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-08 15:54:52,080 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-08 15:54:52,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-08 15:54:52,080 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-08 15:54:52,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-08 15:54:52,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-08 15:54:52,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-08 15:54:52,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-08 15:54:52,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-08 15:54:52,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:52,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-08 15:54:52,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-08 15:54:52,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-08 15:54:52,083 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-08 15:54:52,083 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-08 15:54:52,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-08 15:54:52,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-08 15:54:52,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-08 15:54:52,084 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 -> aa2086ab05aa915f1fa31296bc02fdb3a78fa087 [2019-12-08 15:54:52,413 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-08 15:54:52,425 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-08 15:54:52,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-08 15:54:52,431 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-08 15:54:52,431 INFO L275 PluginConnector]: CDTParser initialized [2019-12-08 15:54:52,432 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2019-12-08 15:54:52,487 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1eb9ba7/30a66032c0014178ba867796c021d5f8/FLAG5b816c70b [2019-12-08 15:54:52,916 INFO L306 CDTParser]: Found 1 translation units. [2019-12-08 15:54:52,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2019-12-08 15:54:52,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1eb9ba7/30a66032c0014178ba867796c021d5f8/FLAG5b816c70b [2019-12-08 15:54:53,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1eb9ba7/30a66032c0014178ba867796c021d5f8 [2019-12-08 15:54:53,329 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-08 15:54:53,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-08 15:54:53,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:53,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-08 15:54:53,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-08 15:54:53,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:53,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33605376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53, skipping insertion in model container [2019-12-08 15:54:53,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:53,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-08 15:54:53,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-08 15:54:53,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:53,771 INFO L203 MainTranslator]: Completed pre-run [2019-12-08 15:54:53,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:53,899 INFO L208 MainTranslator]: Completed translation [2019-12-08 15:54:53,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53 WrapperNode [2019-12-08 15:54:53,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:53,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:53,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-08 15:54:53,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-08 15:54:53,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:53,927 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:53,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:53,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-08 15:54:53,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-08 15:54:53,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-08 15:54:53,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:53,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:53,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:53,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:54,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:54,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:54,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:54,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-08 15:54:54,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-08 15:54:54,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-08 15:54:54,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-08 15:54:54,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:54,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-08 15:54:54,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-08 15:54:54,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-08 15:54:54,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2019-12-08 15:54:54,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-08 15:54:54,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-08 15:54:54,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-08 15:54:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-08 15:54:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-08 15:54:57,870 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-08 15:54:57,874 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-12-08 15:54:57,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:57 BoogieIcfgContainer [2019-12-08 15:54:57,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-08 15:54:57,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-08 15:54:57,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-08 15:54:57,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-08 15:54:57,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 03:54:53" (1/3) ... [2019-12-08 15:54:57,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5602cabe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:57, skipping insertion in model container [2019-12-08 15:54:57,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (2/3) ... [2019-12-08 15:54:57,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5602cabe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:57, skipping insertion in model container [2019-12-08 15:54:57,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:57" (3/3) ... [2019-12-08 15:54:57,885 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2019-12-08 15:54:57,893 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-08 15:54:57,901 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-08 15:54:57,910 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-08 15:54:57,936 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-08 15:54:57,936 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-08 15:54:57,937 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-08 15:54:57,937 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-08 15:54:57,937 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-08 15:54:57,937 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-08 15:54:57,937 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-08 15:54:57,937 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-08 15:54:57,952 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2019-12-08 15:54:57,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-08 15:54:57,958 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:57,959 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:57,960 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:57,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:57,965 INFO L82 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2019-12-08 15:54:57,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:54:57,975 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654679068] [2019-12-08 15:54:57,975 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 15:54:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:58,942 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-08 15:54:58,947 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-08 15:54:58,961 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 15:54:58,962 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-08 15:54:58,966 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 15:54:58,967 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654679068] [2019-12-08 15:54:58,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:54:58,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-08 15:54:58,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243018673] [2019-12-08 15:54:58,974 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-08 15:54:58,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-08 15:54:58,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-08 15:54:58,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:58,991 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2019-12-08 15:54:59,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:54:59,014 INFO L93 Difference]: Finished difference Result 119 states and 208 transitions. [2019-12-08 15:54:59,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-08 15:54:59,016 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-12-08 15:54:59,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:54:59,028 INFO L225 Difference]: With dead ends: 119 [2019-12-08 15:54:59,028 INFO L226 Difference]: Without dead ends: 57 [2019-12-08 15:54:59,031 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 15:54:59,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-12-08 15:54:59,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-12-08 15:54:59,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-12-08 15:54:59,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2019-12-08 15:54:59,074 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2019-12-08 15:54:59,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:54:59,075 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2019-12-08 15:54:59,075 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-08 15:54:59,075 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2019-12-08 15:54:59,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-08 15:54:59,076 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:59,076 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:59,277 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-08 15:54:59,279 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:59,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:59,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2019-12-08 15:54:59,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:54:59,281 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227778396] [2019-12-08 15:54:59,281 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 15:55:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:55:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:55:01,596 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-08 15:55:01,597 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-08 15:55:01,798 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-08 15:55:01,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 03:55:01 BoogieIcfgContainer [2019-12-08 15:55:01,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-08 15:55:01,838 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-08 15:55:01,838 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-08 15:55:01,839 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-08 15:55:01,839 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:57" (3/4) ... [2019-12-08 15:55:01,842 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-08 15:55:01,907 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-12-08 15:55:01,908 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-08 15:55:01,910 INFO L168 Benchmark]: Toolchain (without parser) took 8579.06 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 961.7 MB in the beginning and 999.2 MB in the end (delta: -37.5 MB). Peak memory consumption was 73.1 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:01,911 INFO L168 Benchmark]: CDTParser took 0.26 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 15:55:01,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 568.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -138.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:01,912 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.75 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: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:01,913 INFO L168 Benchmark]: Boogie Preprocessor took 66.80 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 15:55:01,913 INFO L168 Benchmark]: RCFGBuilder took 3837.37 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: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:01,914 INFO L168 Benchmark]: TraceAbstraction took 3961.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 999.2 MB in the end (delta: 53.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:01,915 INFO L168 Benchmark]: Witness Printer took 69.53 ms. Allocated memory is still 1.1 GB. Free memory is still 999.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:55:01,918 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 568.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -138.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 69.75 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: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 66.80 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 3837.37 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: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3961.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 999.2 MB in the end (delta: 53.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 11.5 GB. * Witness Printer took 69.53 ms. Allocated memory is still 1.1 GB. Free memory is still 999.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 191]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1.0, Zero_fmod={2:0}] [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 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=61occurred 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, 1.8s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 38 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...