./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1131b.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_1131b.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 c6d763742402f5574758af03df7d1953644b4c87 ............................................................................................................................................................................................................................................................................................................ 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_1131b.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 c6d763742402f5574758af03df7d1953644b4c87 .......................................................................................................................................................................................................................................................................................................................... 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 15:54:51,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-08 15:54:51,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-08 15:54:51,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-08 15:54:51,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-08 15:54:51,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-08 15:54:51,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-08 15:54:51,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-08 15:54:51,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-08 15:54:51,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-08 15:54:51,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-08 15:54:51,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-08 15:54:51,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-08 15:54:51,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-08 15:54:51,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-08 15:54:51,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-08 15:54:51,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-08 15:54:51,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-08 15:54:51,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-08 15:54:51,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-08 15:54:51,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-08 15:54:51,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-08 15:54:51,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-08 15:54:51,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-08 15:54:51,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-08 15:54:51,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-08 15:54:51,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-08 15:54:51,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-08 15:54:51,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-08 15:54:51,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-08 15:54:51,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-08 15:54:51,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-08 15:54:51,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-08 15:54:51,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-08 15:54:51,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-08 15:54:51,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-08 15:54:51,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-08 15:54:51,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-08 15:54:51,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-08 15:54:51,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-08 15:54:51,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-08 15:54:51,290 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-08 15:54:51,307 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-08 15:54:51,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-08 15:54:51,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-08 15:54:51,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-08 15:54:51,309 INFO L138 SettingsManager]: * Use SBE=true [2019-12-08 15:54:51,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-08 15:54:51,310 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-08 15:54:51,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-08 15:54:51,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-08 15:54:51,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-08 15:54:51,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-08 15:54:51,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-08 15:54:51,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-08 15:54:51,312 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-08 15:54:51,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-08 15:54:51,312 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-08 15:54:51,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-08 15:54:51,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-08 15:54:51,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-08 15:54:51,314 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-08 15:54:51,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-08 15:54:51,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:51,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-08 15:54:51,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-08 15:54:51,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-08 15:54:51,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-08 15:54:51,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-08 15:54:51,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-08 15:54:51,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-08 15:54:51,316 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 -> c6d763742402f5574758af03df7d1953644b4c87 [2019-12-08 15:54:51,674 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-08 15:54:51,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-08 15:54:51,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-08 15:54:51,704 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-08 15:54:51,706 INFO L275 PluginConnector]: CDTParser initialized [2019-12-08 15:54:51,707 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2019-12-08 15:54:51,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fb2b2f73/3569fa4cbb334a75888e47e29ed4952e/FLAGd77788a16 [2019-12-08 15:54:52,275 INFO L306 CDTParser]: Found 1 translation units. [2019-12-08 15:54:52,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2019-12-08 15:54:52,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fb2b2f73/3569fa4cbb334a75888e47e29ed4952e/FLAGd77788a16 [2019-12-08 15:54:52,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fb2b2f73/3569fa4cbb334a75888e47e29ed4952e [2019-12-08 15:54:52,606 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-08 15:54:52,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-08 15:54:52,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:52,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-08 15:54:52,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-08 15:54:52,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:52" (1/1) ... [2019-12-08 15:54:52,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e3d9661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:52, skipping insertion in model container [2019-12-08 15:54:52,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:52" (1/1) ... [2019-12-08 15:54:52,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-08 15:54:52,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-08 15:54:52,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:52,963 INFO L203 MainTranslator]: Completed pre-run [2019-12-08 15:54:53,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:53,063 INFO L208 MainTranslator]: Completed translation [2019-12-08 15:54:53,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53 WrapperNode [2019-12-08 15:54:53,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:53,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:53,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-08 15:54:53,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-08 15:54:53,076 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 15:54:53,109 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 15:54:53,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:53,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-08 15:54:53,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-08 15:54:53,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-08 15:54:53,157 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 15:54:53,157 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 15:54:53,161 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 15:54:53,162 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 15:54:53,175 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 15:54:53,183 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 15:54:53,187 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 15:54:53,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-08 15:54:53,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-08 15:54:53,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-08 15:54:53,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-08 15:54:53,193 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 15:54:53,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-08 15:54:53,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-08 15:54:53,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-08 15:54:53,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-08 15:54:53,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-08 15:54:53,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-08 15:54:53,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-08 15:54:53,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-12-08 15:54:53,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-08 15:54:53,871 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-08 15:54:53,871 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-12-08 15:54:53,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:53 BoogieIcfgContainer [2019-12-08 15:54:53,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-08 15:54:53,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-08 15:54:53,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-08 15:54:53,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-08 15:54:53,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 03:54:52" (1/3) ... [2019-12-08 15:54:53,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ddb3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:53, skipping insertion in model container [2019-12-08 15:54:53,879 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 15:54:53,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ddb3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:53, skipping insertion in model container [2019-12-08 15:54:53,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:53" (3/3) ... [2019-12-08 15:54:53,881 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2019-12-08 15:54:53,891 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-08 15:54:53,899 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-08 15:54:53,911 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-08 15:54:53,936 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-08 15:54:53,936 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-08 15:54:53,937 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-08 15:54:53,937 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-08 15:54:53,937 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-08 15:54:53,937 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-08 15:54:53,938 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-08 15:54:53,938 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-08 15:54:53,955 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-12-08 15:54:53,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-08 15:54:53,962 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:53,963 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:53,963 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:53,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:53,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2019-12-08 15:54:53,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 15:54:53,979 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280333896] [2019-12-08 15:54:53,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 15:54:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:54,103 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 15:54:54,104 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280333896] [2019-12-08 15:54:54,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:54:54,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-08 15:54:54,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245273424] [2019-12-08 15:54:54,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-08 15:54:54,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-08 15:54:54,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-08 15:54:54,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:54,131 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2019-12-08 15:54:54,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:54:54,163 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2019-12-08 15:54:54,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-08 15:54:54,165 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-12-08 15:54:54,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:54:54,178 INFO L225 Difference]: With dead ends: 118 [2019-12-08 15:54:54,179 INFO L226 Difference]: Without dead ends: 56 [2019-12-08 15:54:54,183 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 15:54:54,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-08 15:54:54,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-12-08 15:54:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-08 15:54:54,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2019-12-08 15:54:54,233 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2019-12-08 15:54:54,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:54:54,234 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2019-12-08 15:54:54,234 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-08 15:54:54,234 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2019-12-08 15:54:54,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-08 15:54:54,235 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:54,236 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:54,236 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:54,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:54,237 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2019-12-08 15:54:54,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 15:54:54,237 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498943120] [2019-12-08 15:54:54,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 15:54:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:54,485 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-08 15:54:54,486 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-08 15:54:54,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 03:54:54 BoogieIcfgContainer [2019-12-08 15:54:54,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-08 15:54:54,524 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-08 15:54:54,524 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-08 15:54:54,524 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-08 15:54:54,525 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:53" (3/4) ... [2019-12-08 15:54:54,529 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-08 15:54:54,529 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-08 15:54:54,532 INFO L168 Benchmark]: Toolchain (without parser) took 1922.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -95.2 MB). Peak memory consumption was 50.5 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:54,533 INFO L168 Benchmark]: CDTParser took 0.80 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 15:54:54,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:54,535 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:54,535 INFO L168 Benchmark]: Boogie Preprocessor took 45.26 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 15:54:54,536 INFO L168 Benchmark]: RCFGBuilder took 681.37 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: 39.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:54,537 INFO L168 Benchmark]: TraceAbstraction took 649.24 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: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:54,538 INFO L168 Benchmark]: Witness Printer took 5.39 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 15:54:54,542 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 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 456.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 78.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.26 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 681.37 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: 39.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 649.24 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: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.39 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: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={3:0}] [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L161] __int32_t hx; VAL [one_fmod=1, Zero_fmod={3:0}] [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1, Zero_fmod={3:0}] [L180] COND TRUE isfinite_double(x) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={3:0}] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={3:0}] [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={3:0}] [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={3:0}] [L186] __VERIFIER_error() VAL [one_fmod=1, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 87 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=60occurred 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, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-c1f4b5c [2019-12-08 15:54:56,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-08 15:54:56,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-08 15:54:56,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-08 15:54:56,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-08 15:54:56,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-08 15:54:56,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-08 15:54:56,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-08 15:54:56,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-08 15:54:56,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-08 15:54:56,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-08 15:54:56,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-08 15:54:56,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-08 15:54:56,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-08 15:54:56,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-08 15:54:56,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-08 15:54:56,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-08 15:54:56,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-08 15:54:56,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-08 15:54:56,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-08 15:54:56,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-08 15:54:56,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-08 15:54:56,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-08 15:54:56,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-08 15:54:56,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-08 15:54:56,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-08 15:54:56,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-08 15:54:56,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-08 15:54:56,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-08 15:54:56,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-08 15:54:56,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-08 15:54:56,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-08 15:54:56,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-08 15:54:56,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-08 15:54:56,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-08 15:54:56,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-08 15:54:56,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-08 15:54:56,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-08 15:54:56,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-08 15:54:56,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-08 15:54:56,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-08 15:54:56,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-08 15:54:56,600 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-08 15:54:56,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-08 15:54:56,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-08 15:54:56,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-08 15:54:56,604 INFO L138 SettingsManager]: * Use SBE=true [2019-12-08 15:54:56,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-08 15:54:56,604 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-08 15:54:56,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-08 15:54:56,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-08 15:54:56,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-08 15:54:56,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-08 15:54:56,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-08 15:54:56,607 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-08 15:54:56,607 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-08 15:54:56,607 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-08 15:54:56,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-08 15:54:56,608 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-08 15:54:56,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-08 15:54:56,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-08 15:54:56,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-08 15:54:56,608 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-08 15:54:56,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-08 15:54:56,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:56,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-08 15:54:56,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-08 15:54:56,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-08 15:54:56,610 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-08 15:54:56,610 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-08 15:54:56,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-08 15:54:56,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-08 15:54:56,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-08 15:54:56,611 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 -> c6d763742402f5574758af03df7d1953644b4c87 [2019-12-08 15:54:56,926 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-08 15:54:56,939 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-08 15:54:56,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-08 15:54:56,945 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-08 15:54:56,946 INFO L275 PluginConnector]: CDTParser initialized [2019-12-08 15:54:56,946 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2019-12-08 15:54:57,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af1758ad5/796181803eb048b3a0e3b195d18d36b5/FLAG024f49c7e [2019-12-08 15:54:57,582 INFO L306 CDTParser]: Found 1 translation units. [2019-12-08 15:54:57,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2019-12-08 15:54:57,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af1758ad5/796181803eb048b3a0e3b195d18d36b5/FLAG024f49c7e [2019-12-08 15:54:57,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af1758ad5/796181803eb048b3a0e3b195d18d36b5 [2019-12-08 15:54:57,911 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-08 15:54:57,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-08 15:54:57,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:57,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-08 15:54:57,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-08 15:54:57,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:57" (1/1) ... [2019-12-08 15:54:57,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45dfe1bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:57, skipping insertion in model container [2019-12-08 15:54:57,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:57" (1/1) ... [2019-12-08 15:54:57,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-08 15:54:57,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-08 15:54:58,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:58,271 INFO L203 MainTranslator]: Completed pre-run [2019-12-08 15:54:58,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:58,382 INFO L208 MainTranslator]: Completed translation [2019-12-08 15:54:58,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58 WrapperNode [2019-12-08 15:54:58,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:58,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:58,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-08 15:54:58,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-08 15:54:58,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:58,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-08 15:54:58,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-08 15:54:58,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-08 15:54:58,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-08 15:54:58,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-08 15:54:58,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-08 15:54:58,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-08 15:54:58,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (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 15:54:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-08 15:54:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-08 15:54:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-08 15:54:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2019-12-08 15:54:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-08 15:54:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-08 15:54:58,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-08 15:54:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-08 15:54:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-08 15:55:02,246 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-08 15:55:02,247 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-12-08 15:55:02,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:55:02 BoogieIcfgContainer [2019-12-08 15:55:02,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-08 15:55:02,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-08 15:55:02,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-08 15:55:02,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-08 15:55:02,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 03:54:57" (1/3) ... [2019-12-08 15:55:02,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643baf3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:55:02, skipping insertion in model container [2019-12-08 15:55:02,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (2/3) ... [2019-12-08 15:55:02,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643baf3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:55:02, skipping insertion in model container [2019-12-08 15:55:02,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:55:02" (3/3) ... [2019-12-08 15:55:02,256 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2019-12-08 15:55:02,267 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-08 15:55:02,276 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-08 15:55:02,289 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-08 15:55:02,315 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-08 15:55:02,316 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-08 15:55:02,316 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-08 15:55:02,316 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-08 15:55:02,316 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-08 15:55:02,317 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-08 15:55:02,317 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-08 15:55:02,317 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-08 15:55:02,333 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-12-08 15:55:02,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-08 15:55:02,340 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:55:02,341 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:55:02,342 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:55:02,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:55:02,349 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2019-12-08 15:55:02,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:55:02,362 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983446744] [2019-12-08 15:55:02,362 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 15:55:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:55:03,319 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-08 15:55:03,323 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-08 15:55:03,335 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 15:55:03,335 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-08 15:55:03,339 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 15:55:03,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983446744] [2019-12-08 15:55:03,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:55:03,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-08 15:55:03,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253719846] [2019-12-08 15:55:03,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-08 15:55:03,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-08 15:55:03,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-08 15:55:03,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:55:03,362 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2019-12-08 15:55:03,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:55:03,388 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2019-12-08 15:55:03,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-08 15:55:03,389 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-12-08 15:55:03,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:55:03,403 INFO L225 Difference]: With dead ends: 118 [2019-12-08 15:55:03,403 INFO L226 Difference]: Without dead ends: 56 [2019-12-08 15:55:03,406 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:55:03,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-08 15:55:03,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-12-08 15:55:03,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-08 15:55:03,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2019-12-08 15:55:03,444 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2019-12-08 15:55:03,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:55:03,445 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2019-12-08 15:55:03,445 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-08 15:55:03,445 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2019-12-08 15:55:03,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-08 15:55:03,446 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:55:03,446 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:55:03,650 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-08 15:55:03,651 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:55:03,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:55:03,652 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2019-12-08 15:55:03,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:55:03,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298486400] [2019-12-08 15:55:03,656 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 15:55:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:55:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:55:06,262 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-08 15:55:06,262 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-08 15:55:06,464 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-08 15:55:06,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 03:55:06 BoogieIcfgContainer [2019-12-08 15:55:06,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-08 15:55:06,503 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-08 15:55:06,503 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-08 15:55:06,504 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-08 15:55:06,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:55:02" (3/4) ... [2019-12-08 15:55:06,506 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-08 15:55:06,564 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-12-08 15:55:06,565 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-08 15:55:06,567 INFO L168 Benchmark]: Toolchain (without parser) took 8653.46 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 76.0 MB). Free memory was 960.4 MB in the beginning and 954.6 MB in the end (delta: 5.8 MB). Peak memory consumption was 81.8 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:06,568 INFO L168 Benchmark]: CDTParser took 0.25 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 15:55:06,569 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.88 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 76.0 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -104.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:06,569 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.05 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:06,570 INFO L168 Benchmark]: Boogie Preprocessor took 51.84 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 15:55:06,570 INFO L168 Benchmark]: RCFGBuilder took 3757.30 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: 42.1 MB). Peak memory consumption was 42.1 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:06,571 INFO L168 Benchmark]: TraceAbstraction took 4253.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 954.6 MB in the end (delta: 61.3 MB). Peak memory consumption was 61.3 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:06,571 INFO L168 Benchmark]: Witness Printer took 61.62 ms. Allocated memory is still 1.1 GB. Free memory is still 954.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:55:06,575 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 468.88 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 76.0 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -104.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 55.05 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.84 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 3757.30 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: 42.1 MB). Peak memory consumption was 42.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4253.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 954.6 MB in the end (delta: 61.3 MB). Peak memory consumption was 61.3 MB. Max. memory is 11.5 GB. * Witness Printer took 61.62 ms. Allocated memory is still 1.1 GB. Free memory is still 954.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 186]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L161] __int32_t hx; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L180] COND TRUE isfinite_double(x) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x VAL [one_fmod=1.0, Zero_fmod={2:0}] [L186] __VERIFIER_error() VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Result: UNSAFE, OverallTime: 4.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 1.9s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 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...