./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 56df0817616f6c5016a1ac832f32db0c87e1c370 ......................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 56df0817616f6c5016a1ac832f32db0c87e1c370 ....................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 16:49:10,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:49:10,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:49:10,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:49:10,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:49:10,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:49:10,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:49:10,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:49:10,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:49:10,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:49:10,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:49:10,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:49:10,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:49:10,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:49:10,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:49:10,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:49:10,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:49:10,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:49:10,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:49:10,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:49:10,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:49:10,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:49:10,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:49:10,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:49:10,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:49:10,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:49:10,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:49:10,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:49:10,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:49:10,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:49:10,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:49:10,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:49:10,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:49:10,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:49:10,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:49:10,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:49:10,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:49:10,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:49:10,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:49:10,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:49:10,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:49:10,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:49:10,401 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:49:10,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:49:10,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:49:10,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:49:10,403 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:49:10,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:49:10,404 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:49:10,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:49:10,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:49:10,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:49:10,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:49:10,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:49:10,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:49:10,406 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:49:10,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:49:10,406 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:49:10,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:49:10,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:49:10,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:49:10,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:49:10,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:49:10,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:49:10,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:49:10,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:49:10,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:49:10,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:49:10,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:49:10,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:49:10,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:49:10,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56df0817616f6c5016a1ac832f32db0c87e1c370 [2019-11-28 16:49:10,754 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:49:10,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:49:10,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:49:10,772 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:49:10,772 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:49:10,773 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2019-11-28 16:49:10,830 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3226c92c6/0a162f02b2fd496caa8a31c47faf0c4b/FLAGda52f7665 [2019-11-28 16:49:11,250 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:49:11,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2019-11-28 16:49:11,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3226c92c6/0a162f02b2fd496caa8a31c47faf0c4b/FLAGda52f7665 [2019-11-28 16:49:11,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3226c92c6/0a162f02b2fd496caa8a31c47faf0c4b [2019-11-28 16:49:11,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:49:11,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:49:11,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:49:11,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:49:11,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:49:11,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:11" (1/1) ... [2019-11-28 16:49:11,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b3a5153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:11, skipping insertion in model container [2019-11-28 16:49:11,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:11" (1/1) ... [2019-11-28 16:49:11,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:49:11,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:49:11,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:49:11,987 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:49:12,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:49:12,139 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:49:12,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:12 WrapperNode [2019-11-28 16:49:12,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:49:12,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:49:12,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:49:12,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:49:12,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:12" (1/1) ... [2019-11-28 16:49:12,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:12" (1/1) ... [2019-11-28 16:49:12,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:49:12,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:49:12,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:49:12,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:49:12,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:12" (1/1) ... [2019-11-28 16:49:12,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:12" (1/1) ... [2019-11-28 16:49:12,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:12" (1/1) ... [2019-11-28 16:49:12,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:12" (1/1) ... [2019-11-28 16:49:12,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:12" (1/1) ... [2019-11-28 16:49:12,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:12" (1/1) ... [2019-11-28 16:49:12,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:12" (1/1) ... [2019-11-28 16:49:12,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:49:12,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:49:12,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:49:12,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:49:12,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:49:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:49:12,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-28 16:49:12,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:49:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:49:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:49:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:49:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:49:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:49:12,623 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:49:12,623 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-28 16:49:12,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:12 BoogieIcfgContainer [2019-11-28 16:49:12,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:49:12,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:49:12,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:49:12,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:49:12,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:49:11" (1/3) ... [2019-11-28 16:49:12,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473fbf2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:49:12, skipping insertion in model container [2019-11-28 16:49:12,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:12" (2/3) ... [2019-11-28 16:49:12,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473fbf2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:49:12, skipping insertion in model container [2019-11-28 16:49:12,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:12" (3/3) ... [2019-11-28 16:49:12,649 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2019-11-28 16:49:12,671 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:49:12,688 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:49:12,704 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:49:12,725 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:49:12,725 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:49:12,725 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:49:12,726 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:49:12,726 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:49:12,726 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:49:12,726 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:49:12,727 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:49:12,739 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-28 16:49:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:49:12,746 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:49:12,747 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:49:12,748 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:49:12,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:49:12,754 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2019-11-28 16:49:12,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:49:12,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763890545] [2019-11-28 16:49:12,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:49:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:49:12,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:49:12,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763890545] [2019-11-28 16:49:12,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:49:12,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:49:12,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146168427] [2019-11-28 16:49:12,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:49:12,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:49:12,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:49:12,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:49:12,901 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-11-28 16:49:12,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:49:12,916 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2019-11-28 16:49:12,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:49:12,917 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-28 16:49:12,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:49:12,925 INFO L225 Difference]: With dead ends: 34 [2019-11-28 16:49:12,925 INFO L226 Difference]: Without dead ends: 15 [2019-11-28 16:49:12,929 INFO L630 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 [2019-11-28 16:49:12,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-28 16:49:12,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-28 16:49:12,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 16:49:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-11-28 16:49:12,959 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2019-11-28 16:49:12,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:49:12,959 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-11-28 16:49:12,959 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:49:12,959 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-11-28 16:49:12,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:49:12,960 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:49:12,960 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:49:12,961 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:49:12,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:49:12,961 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2019-11-28 16:49:12,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:49:12,961 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023961821] [2019-11-28 16:49:12,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:49:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:49:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:49:13,179 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:49:13,179 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:49:13,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:49:13 BoogieIcfgContainer [2019-11-28 16:49:13,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:49:13,207 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:49:13,208 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:49:13,208 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:49:13,209 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:12" (3/4) ... [2019-11-28 16:49:13,213 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:49:13,213 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:49:13,216 INFO L168 Benchmark]: Toolchain (without parser) took 1563.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -128.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:13,217 INFO L168 Benchmark]: CDTParser took 0.27 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. [2019-11-28 16:49:13,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -188.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:13,219 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.02 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:13,219 INFO L168 Benchmark]: Boogie Preprocessor took 35.68 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. [2019-11-28 16:49:13,220 INFO L168 Benchmark]: RCFGBuilder took 391.73 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: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:13,221 INFO L168 Benchmark]: TraceAbstraction took 576.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:13,222 INFO L168 Benchmark]: Witness Printer took 6.09 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. [2019-11-28 16:49:13,226 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 486.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -188.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 56.02 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.68 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 391.73 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: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 576.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 6.09 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: 73]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 68, overapproximation of bitwiseAnd at line 38. Possible FailurePath: [L68] double x = -1.0 / 0.0; [L45] __uint32_t high; [L47] ieee_double_shape_type gh_u; [L48] gh_u.value = (x) [L49] EXPR gh_u.parts.msw [L49] (high) = gh_u.parts.msw [L52] ieee_double_shape_type sh_u; [L53] sh_u.value = (x) [L54] sh_u.parts.msw = (high & 0x7fffffff) [L55] EXPR sh_u.value [L55] (x) = sh_u.value [L57] return x; [L69] double res = fabs_double(x); [L31] __int32_t hx, lx; [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (x) [L35] EXPR ew_u.parts.msw [L35] (hx) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (lx) = ew_u.parts.lsw [L38] hx &= 0x7fffffff [L39] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L40] hx = 0x7ff00000 - hx [L41] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L72] COND TRUE !isinf_double(res) [L73] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-11-28 16:49:15,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:49:15,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:49:15,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:49:15,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:49:15,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:49:15,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:49:15,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:49:15,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:49:15,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:49:15,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:49:15,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:49:15,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:49:15,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:49:15,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:49:15,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:49:15,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:49:15,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:49:15,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:49:15,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:49:15,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:49:15,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:49:15,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:49:15,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:49:15,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:49:15,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:49:15,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:49:15,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:49:15,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:49:15,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:49:15,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:49:15,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:49:15,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:49:15,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:49:15,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:49:15,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:49:15,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:49:15,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:49:15,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:49:15,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:49:15,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:49:15,398 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:49:15,425 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:49:15,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:49:15,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:49:15,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:49:15,427 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:49:15,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:49:15,428 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:49:15,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:49:15,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:49:15,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:49:15,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:49:15,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:49:15,429 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:49:15,429 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:49:15,430 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:49:15,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:49:15,430 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:49:15,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:49:15,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:49:15,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:49:15,431 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:49:15,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:49:15,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:49:15,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:49:15,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:49:15,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:49:15,432 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:49:15,433 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:49:15,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:49:15,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:49:15,433 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:49:15,434 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56df0817616f6c5016a1ac832f32db0c87e1c370 [2019-11-28 16:49:15,737 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:49:15,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:49:15,757 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:49:15,759 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:49:15,759 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:49:15,760 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2019-11-28 16:49:15,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a3973d5b/042fbb5ead9049ccb1e27baae96e281b/FLAG2b01c33ef [2019-11-28 16:49:16,318 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:49:16,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2019-11-28 16:49:16,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a3973d5b/042fbb5ead9049ccb1e27baae96e281b/FLAG2b01c33ef [2019-11-28 16:49:16,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a3973d5b/042fbb5ead9049ccb1e27baae96e281b [2019-11-28 16:49:16,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:49:16,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:49:16,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:49:16,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:49:16,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:49:16,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:16" (1/1) ... [2019-11-28 16:49:16,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4330d1d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:16, skipping insertion in model container [2019-11-28 16:49:16,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:16" (1/1) ... [2019-11-28 16:49:16,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:49:16,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:49:16,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:49:16,980 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:49:17,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:49:17,120 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:49:17,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:17 WrapperNode [2019-11-28 16:49:17,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:49:17,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:49:17,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:49:17,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:49:17,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:17" (1/1) ... [2019-11-28 16:49:17,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:17" (1/1) ... [2019-11-28 16:49:17,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:49:17,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:49:17,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:49:17,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:49:17,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:17" (1/1) ... [2019-11-28 16:49:17,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:17" (1/1) ... [2019-11-28 16:49:17,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:17" (1/1) ... [2019-11-28 16:49:17,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:17" (1/1) ... [2019-11-28 16:49:17,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:17" (1/1) ... [2019-11-28 16:49:17,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:17" (1/1) ... [2019-11-28 16:49:17,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:17" (1/1) ... [2019-11-28 16:49:17,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:49:17,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:49:17,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:49:17,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:49:17,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:17" (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 [2019-11-28 16:49:17,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-28 16:49:17,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-28 16:49:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:49:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:49:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:49:17,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:49:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-28 16:49:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:49:17,618 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:49:17,618 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-28 16:49:17,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:17 BoogieIcfgContainer [2019-11-28 16:49:17,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:49:17,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:49:17,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:49:17,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:49:17,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:49:16" (1/3) ... [2019-11-28 16:49:17,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5203946d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:49:17, skipping insertion in model container [2019-11-28 16:49:17,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:17" (2/3) ... [2019-11-28 16:49:17,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5203946d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:49:17, skipping insertion in model container [2019-11-28 16:49:17,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:17" (3/3) ... [2019-11-28 16:49:17,646 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2019-11-28 16:49:17,661 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:49:17,670 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:49:17,679 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:49:17,698 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:49:17,699 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:49:17,699 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:49:17,699 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:49:17,700 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:49:17,700 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:49:17,700 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:49:17,700 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:49:17,712 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-28 16:49:17,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:49:17,718 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:49:17,719 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:49:17,719 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:49:17,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:49:17,724 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2019-11-28 16:49:17,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:49:17,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678584007] [2019-11-28 16:49:17,734 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 [2019-11-28 16:49:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:49:17,826 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 16:49:17,832 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:49:17,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:49:17,845 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:49:17,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:49:17,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678584007] [2019-11-28 16:49:17,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:49:17,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 16:49:17,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503255751] [2019-11-28 16:49:17,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:49:17,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:49:17,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:49:17,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:49:17,875 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-11-28 16:49:17,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:49:17,895 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2019-11-28 16:49:17,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:49:17,897 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-28 16:49:17,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:49:17,907 INFO L225 Difference]: With dead ends: 34 [2019-11-28 16:49:17,907 INFO L226 Difference]: Without dead ends: 15 [2019-11-28 16:49:17,911 INFO L630 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 [2019-11-28 16:49:17,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-28 16:49:17,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-28 16:49:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 16:49:17,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-11-28 16:49:17,947 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2019-11-28 16:49:17,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:49:17,948 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-11-28 16:49:17,948 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:49:17,948 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-11-28 16:49:17,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:49:17,949 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:49:17,949 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:49:18,167 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:49:18,168 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:49:18,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:49:18,169 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2019-11-28 16:49:18,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:49:18,172 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364428988] [2019-11-28 16:49:18,173 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 [2019-11-28 16:49:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:49:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:49:18,531 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 16:49:18,532 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:49:18,734 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:49:18,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:49:18 BoogieIcfgContainer [2019-11-28 16:49:18,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:49:18,765 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:49:18,765 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:49:18,765 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:49:18,766 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:17" (3/4) ... [2019-11-28 16:49:18,767 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:49:18,826 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:49:18,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:49:18,829 INFO L168 Benchmark]: Toolchain (without parser) took 2114.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -113.5 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:18,829 INFO L168 Benchmark]: CDTParser took 0.20 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. [2019-11-28 16:49:18,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -187.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:18,831 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.21 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. [2019-11-28 16:49:18,831 INFO L168 Benchmark]: Boogie Preprocessor took 34.88 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. [2019-11-28 16:49:18,832 INFO L168 Benchmark]: RCFGBuilder took 417.83 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: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:18,834 INFO L168 Benchmark]: TraceAbstraction took 1142.73 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: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:18,835 INFO L168 Benchmark]: Witness Printer took 61.49 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. [2019-11-28 16:49:18,842 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 405.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -187.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.21 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 34.88 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 417.83 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: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1142.73 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: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * Witness Printer took 61.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 73]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L68] double x = -1.0 / 0.0; [L45] __uint32_t high; [L47] ieee_double_shape_type gh_u; [L48] gh_u.value = (x) [L49] EXPR gh_u.parts.msw [L49] (high) = gh_u.parts.msw [L52] ieee_double_shape_type sh_u; [L53] sh_u.value = (x) [L54] sh_u.parts.msw = (high & 0x7fffffff) [L55] EXPR sh_u.value [L55] (x) = sh_u.value [L57] return x; [L69] double res = fabs_double(x); [L31] __int32_t hx, lx; [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (x) [L35] EXPR ew_u.parts.msw [L35] (hx) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (lx) = ew_u.parts.lsw [L38] hx &= 0x7fffffff [L39] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L40] hx = 0x7ff00000 - hx [L41] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L72] COND TRUE !isinf_double(res) [L73] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...