./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer --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 863e70131520c7e8858a4f32bea4c5cffd3e6ae2 ..................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer --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 863e70131520c7e8858a4f32bea4c5cffd3e6ae2 ......................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:53:21,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:53:21,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:53:21,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:53:21,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:53:21,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:53:21,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:53:21,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:53:21,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:53:21,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:53:21,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:53:21,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:53:21,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:53:21,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:53:21,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:53:21,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:53:21,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:53:21,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:53:21,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:53:21,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:53:21,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:53:21,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:53:21,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:53:21,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:53:21,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:53:21,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:53:21,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:53:21,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:53:21,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:53:21,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:53:21,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:53:21,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:53:21,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:53:21,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:53:21,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:53:21,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:53:21,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:53:21,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:53:21,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:53:21,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:53:21,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:53:21,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:53:21,393 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:53:21,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:53:21,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:53:21,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:53:21,395 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:53:21,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:53:21,395 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:53:21,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:53:21,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:53:21,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:53:21,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:53:21,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:53:21,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:53:21,397 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:53:21,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:53:21,397 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:53:21,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:53:21,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:53:21,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:53:21,398 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:53:21,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:53:21,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:53:21,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:53:21,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:53:21,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:53:21,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:53:21,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:53:21,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:53:21,400 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer 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 -> 863e70131520c7e8858a4f32bea4c5cffd3e6ae2 [2019-11-25 08:53:21,560 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:53:21,573 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:53:21,575 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:53:21,576 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:53:21,577 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:53:21,578 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2019-11-25 08:53:21,635 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/data/aa62ec6f5/b2e6787bc9be44ad939ac84a2962c6a0/FLAGf3ea823c2 [2019-11-25 08:53:22,009 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:53:22,010 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2019-11-25 08:53:22,016 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/data/aa62ec6f5/b2e6787bc9be44ad939ac84a2962c6a0/FLAGf3ea823c2 [2019-11-25 08:53:22,367 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/data/aa62ec6f5/b2e6787bc9be44ad939ac84a2962c6a0 [2019-11-25 08:53:22,370 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:53:22,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:53:22,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:22,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:53:22,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:53:22,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5422e48e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22, skipping insertion in model container [2019-11-25 08:53:22,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:53:22,410 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:53:22,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:53:22,606 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:53:22,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:53:22,707 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:53:22,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22 WrapperNode [2019-11-25 08:53:22,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:22,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:53:22,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:53:22,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:53:22,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:53:22,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:53:22,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:53:22,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:53:22,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:53:22,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:53:22,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:53:22,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:53:22,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/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 [2019-11-25 08:53:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:53:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-25 08:53:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:53:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-25 08:53:22,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:53:22,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:53:22,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:53:22,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:53:23,075 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:53:23,076 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-25 08:53:23,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:23 BoogieIcfgContainer [2019-11-25 08:53:23,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:53:23,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:53:23,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:53:23,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:53:23,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:53:22" (1/3) ... [2019-11-25 08:53:23,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e9f4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:53:23, skipping insertion in model container [2019-11-25 08:53:23,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (2/3) ... [2019-11-25 08:53:23,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e9f4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:53:23, skipping insertion in model container [2019-11-25 08:53:23,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:23" (3/3) ... [2019-11-25 08:53:23,083 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2019-11-25 08:53:23,091 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:53:23,096 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:53:23,106 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:53:23,127 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:53:23,127 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:53:23,127 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:53:23,127 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:53:23,127 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:53:23,127 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:53:23,127 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:53:23,128 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:53:23,144 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-25 08:53:23,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:53:23,149 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:23,150 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:23,151 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:23,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:23,158 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2019-11-25 08:53:23,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:23,166 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488127379] [2019-11-25 08:53:23,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:23,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:23,290 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488127379] [2019-11-25 08:53:23,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:23,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:53:23,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721886882] [2019-11-25 08:53:23,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:53:23,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:53:23,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:53:23,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:53:23,306 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-25 08:53:23,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:23,320 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2019-11-25 08:53:23,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:53:23,321 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-25 08:53:23,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:23,329 INFO L225 Difference]: With dead ends: 50 [2019-11-25 08:53:23,329 INFO L226 Difference]: Without dead ends: 23 [2019-11-25 08:53:23,332 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 [2019-11-25 08:53:23,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-25 08:53:23,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-25 08:53:23,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-25 08:53:23,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2019-11-25 08:53:23,361 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2019-11-25 08:53:23,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:23,361 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2019-11-25 08:53:23,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:53:23,361 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2019-11-25 08:53:23,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:53:23,362 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:23,362 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:23,362 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:23,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:23,363 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2019-11-25 08:53:23,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:23,363 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728287428] [2019-11-25 08:53:23,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:23,481 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:53:23,481 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:53:23,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:53:23 BoogieIcfgContainer [2019-11-25 08:53:23,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:53:23,508 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:53:23,508 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:53:23,508 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:53:23,509 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:23" (3/4) ... [2019-11-25 08:53:23,512 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:53:23,512 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:53:23,514 INFO L168 Benchmark]: Toolchain (without parser) took 1142.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -122.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:23,516 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:53:23,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -175.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:23,518 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:23,519 INFO L168 Benchmark]: Boogie Preprocessor took 28.06 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. [2019-11-25 08:53:23,520 INFO L168 Benchmark]: RCFGBuilder took 301.68 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: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:23,521 INFO L168 Benchmark]: TraceAbstraction took 429.98 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: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:23,521 INFO L168 Benchmark]: Witness Printer took 4.35 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. [2019-11-25 08:53:23,525 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 336.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -175.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.06 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 301.68 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: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 429.98 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: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.35 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: 71]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 58, overapproximation of someBinaryArithmeticFLOAToperation at line 66, overapproximation of bitwiseAnd at line 22. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; VAL [huge_floor=1000000000000000000000000000000] [L66] float x = 0.0f / 0.0f; [L15] __int32_t i0, j0; [L16] __uint32_t i, ix; VAL [huge_floor=1000000000000000000000000000000] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (i0) = gf_u.word [L22] ix = (i0 & 0x7fffffff) [L23] j0 = (ix >> 23) - 0x7f VAL [huge_floor=1000000000000000000000000000000] [L24] COND FALSE !(j0 < 23) VAL [huge_floor=1000000000000000000000000000000] [L44] COND FALSE !(!((ix) < 0x7f800000L)) [L47] return x; VAL [huge_floor=1000000000000000000000000000000] [L67] float res = floor_float(x); [L58] return x != x; VAL [huge_floor=1000000000000000000000000000000] [L70] COND TRUE !isnan_float(res) [L71] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 34 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=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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 0.1.24-6b5699a [2019-11-25 08:53:25,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:53:25,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:53:25,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:53:25,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:53:25,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:53:25,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:53:25,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:53:25,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:53:25,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:53:25,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:53:25,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:53:25,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:53:25,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:53:25,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:53:25,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:53:25,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:53:25,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:53:25,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:53:25,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:53:25,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:53:25,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:53:25,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:53:25,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:53:25,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:53:25,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:53:25,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:53:25,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:53:25,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:53:25,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:53:25,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:53:25,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:53:25,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:53:25,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:53:25,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:53:25,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:53:25,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:53:25,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:53:25,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:53:25,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:53:25,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:53:25,376 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-25 08:53:25,400 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:53:25,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:53:25,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:53:25,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:53:25,411 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:53:25,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:53:25,412 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:53:25,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:53:25,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:53:25,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:53:25,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:53:25,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:53:25,413 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:53:25,414 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:53:25,414 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:53:25,414 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:53:25,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:53:25,415 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:53:25,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:53:25,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:53:25,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:53:25,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:53:25,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:53:25,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:53:25,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:53:25,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:53:25,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:53:25,417 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:53:25,418 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:53:25,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:53:25,419 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:53:25,419 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer 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 -> 863e70131520c7e8858a4f32bea4c5cffd3e6ae2 [2019-11-25 08:53:25,724 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:53:25,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:53:25,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:53:25,749 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:53:25,749 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:53:25,750 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2019-11-25 08:53:25,805 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/data/3504c5b71/3aaaca64b9704716b4e63547b4ee919e/FLAG9b0e1a8dc [2019-11-25 08:53:26,175 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:53:26,176 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2019-11-25 08:53:26,181 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/data/3504c5b71/3aaaca64b9704716b4e63547b4ee919e/FLAG9b0e1a8dc [2019-11-25 08:53:26,619 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/data/3504c5b71/3aaaca64b9704716b4e63547b4ee919e [2019-11-25 08:53:26,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:53:26,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:53:26,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:26,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:53:26,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:53:26,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fcbaa2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26, skipping insertion in model container [2019-11-25 08:53:26,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:53:26,652 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:53:26,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:53:26,800 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:53:26,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:53:26,847 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:53:26,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26 WrapperNode [2019-11-25 08:53:26,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:26,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:53:26,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:53:26,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:53:26,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:53:26,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:53:26,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:53:26,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:53:26,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:53:26,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:53:26,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:53:26,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:53:26,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/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 [2019-11-25 08:53:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:53:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-25 08:53:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:53:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:53:27,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:53:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-25 08:53:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:53:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:53:27,518 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:53:27,518 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-25 08:53:27,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:27 BoogieIcfgContainer [2019-11-25 08:53:27,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:53:27,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:53:27,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:53:27,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:53:27,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:53:26" (1/3) ... [2019-11-25 08:53:27,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487a19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:53:27, skipping insertion in model container [2019-11-25 08:53:27,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (2/3) ... [2019-11-25 08:53:27,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487a19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:53:27, skipping insertion in model container [2019-11-25 08:53:27,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:27" (3/3) ... [2019-11-25 08:53:27,525 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2019-11-25 08:53:27,534 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:53:27,540 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:53:27,547 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:53:27,567 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:53:27,567 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:53:27,567 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:53:27,568 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:53:27,568 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:53:27,568 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:53:27,568 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:53:27,568 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:53:27,581 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-25 08:53:27,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:53:27,587 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:27,587 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:27,588 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:27,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:27,593 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2019-11-25 08:53:27,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:53:27,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63164330] [2019-11-25 08:53:27,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/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 [2019-11-25 08:53:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:27,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-25 08:53:27,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:27,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:27,720 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:53:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:27,724 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63164330] [2019-11-25 08:53:27,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:27,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:53:27,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87191396] [2019-11-25 08:53:27,728 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:53:27,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:53:27,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:53:27,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:53:27,739 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-25 08:53:27,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:27,753 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2019-11-25 08:53:27,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:53:27,753 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-25 08:53:27,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:27,761 INFO L225 Difference]: With dead ends: 50 [2019-11-25 08:53:27,761 INFO L226 Difference]: Without dead ends: 23 [2019-11-25 08:53:27,764 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:53:27,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-25 08:53:27,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-25 08:53:27,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-25 08:53:27,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2019-11-25 08:53:27,790 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2019-11-25 08:53:27,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:27,790 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2019-11-25 08:53:27,790 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:53:27,790 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2019-11-25 08:53:27,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:53:27,791 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:27,791 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:27,992 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-25 08:53:27,992 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:27,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:27,992 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2019-11-25 08:53:27,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:53:27,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323799456] [2019-11-25 08:53:27,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/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 [2019-11-25 08:53:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:28,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:53:28,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:28,143 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:53:28,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:28,199 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:53:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:28,306 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323799456] [2019-11-25 08:53:28,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:28,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-25 08:53:28,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112673247] [2019-11-25 08:53:28,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:53:28,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:53:28,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:53:28,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:53:28,310 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 10 states. [2019-11-25 08:53:28,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:28,817 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-11-25 08:53:28,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:53:28,817 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2019-11-25 08:53:28,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:28,818 INFO L225 Difference]: With dead ends: 34 [2019-11-25 08:53:28,818 INFO L226 Difference]: Without dead ends: 18 [2019-11-25 08:53:28,819 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:53:28,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-25 08:53:28,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-25 08:53:28,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-25 08:53:28,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-11-25 08:53:28,822 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2019-11-25 08:53:28,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:28,822 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-11-25 08:53:28,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:53:28,823 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-11-25 08:53:28,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-25 08:53:28,824 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:28,824 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:29,037 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-25 08:53:29,037 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:29,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:29,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2019-11-25 08:53:29,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:53:29,039 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128761113] [2019-11-25 08:53:29,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-25 08:53:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:29,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:53:29,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:29,247 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:53:29,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:29,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128761113] [2019-11-25 08:53:29,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:29,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-25 08:53:29,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215051767] [2019-11-25 08:53:29,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:53:29,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:53:29,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:53:29,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:53:29,393 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 8 states. [2019-11-25 08:53:29,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:29,543 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-11-25 08:53:29,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:53:29,544 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-25 08:53:29,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:29,544 INFO L225 Difference]: With dead ends: 18 [2019-11-25 08:53:29,544 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:53:29,545 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:53:29,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:53:29,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:53:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:53:29,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:53:29,546 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-11-25 08:53:29,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:29,546 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:53:29,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:53:29,546 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:53:29,546 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:53:29,753 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-25 08:53:29,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:53:29,863 INFO L444 ceAbstractionStarter]: For program point L27(lines 27 31) no Hoare annotation was computed. [2019-11-25 08:53:29,863 INFO L444 ceAbstractionStarter]: For program point L44(lines 44 47) no Hoare annotation was computed. [2019-11-25 08:53:29,863 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-25 08:53:29,863 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:53:29,863 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:53:29,864 INFO L444 ceAbstractionStarter]: For program point L24(lines 24 48) no Hoare annotation was computed. [2019-11-25 08:53:29,864 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 71) no Hoare annotation was computed. [2019-11-25 08:53:29,864 INFO L444 ceAbstractionStarter]: For program point L49(lines 49 53) no Hoare annotation was computed. [2019-11-25 08:53:29,864 INFO L444 ceAbstractionStarter]: For program point L49-1(lines 14 55) no Hoare annotation was computed. [2019-11-25 08:53:29,864 INFO L444 ceAbstractionStarter]: For program point L49-2(lines 49 53) no Hoare annotation was computed. [2019-11-25 08:53:29,864 INFO L444 ceAbstractionStarter]: For program point L70(lines 70 73) no Hoare annotation was computed. [2019-11-25 08:53:29,864 INFO L444 ceAbstractionStarter]: For program point L37(lines 37 41) no Hoare annotation was computed. [2019-11-25 08:53:29,865 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:53:29,865 INFO L444 ceAbstractionStarter]: For program point L29(lines 29 31) no Hoare annotation was computed. [2019-11-25 08:53:29,865 INFO L440 ceAbstractionStarter]: At program point L58(line 58) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq |ULTIMATE.start_floor_float_#res| |ULTIMATE.start_floor_float_#res|))) [2019-11-25 08:53:29,865 INFO L444 ceAbstractionStarter]: For program point L25(lines 25 42) no Hoare annotation was computed. [2019-11-25 08:53:29,865 INFO L440 ceAbstractionStarter]: At program point L54(lines 14 55) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (not (fp.eq |ULTIMATE.start_floor_float_#res| |ULTIMATE.start_floor_float_#res|))) [2019-11-25 08:53:29,865 INFO L444 ceAbstractionStarter]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2019-11-25 08:53:29,866 INFO L440 ceAbstractionStarter]: At program point L17-2(lines 17 21) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) [2019-11-25 08:53:29,866 INFO L444 ceAbstractionStarter]: For program point L17-3(lines 17 21) no Hoare annotation was computed. [2019-11-25 08:53:29,866 INFO L447 ceAbstractionStarter]: At program point L75(lines 60 76) the Hoare annotation is: true [2019-11-25 08:53:29,866 INFO L444 ceAbstractionStarter]: For program point L71(line 71) no Hoare annotation was computed. [2019-11-25 08:53:29,866 INFO L444 ceAbstractionStarter]: For program point L38(lines 38 39) no Hoare annotation was computed. [2019-11-25 08:53:29,866 INFO L444 ceAbstractionStarter]: For program point L38-2(lines 38 39) no Hoare annotation was computed. [2019-11-25 08:53:29,866 INFO L444 ceAbstractionStarter]: For program point L26(lines 26 32) no Hoare annotation was computed. [2019-11-25 08:53:29,867 INFO L444 ceAbstractionStarter]: For program point L35(lines 35 36) no Hoare annotation was computed. [2019-11-25 08:53:29,871 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:53:29,877 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:53:29,879 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:53:29,880 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:53:29,880 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:53:29,881 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:53:29,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:53:29 BoogieIcfgContainer [2019-11-25 08:53:29,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:53:29,883 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:53:29,883 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:53:29,884 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:53:29,884 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:27" (3/4) ... [2019-11-25 08:53:29,887 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:53:29,897 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-25 08:53:29,898 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-25 08:53:29,898 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:53:29,928 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-11-25 08:53:29,929 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && !~fp.eq~FLOAT(\result, \result) [2019-11-25 08:53:29,930 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && 1bv32 == \result) && !~fp.eq~FLOAT(\result, \result) [2019-11-25 08:53:29,969 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9f687730-0b10-4a98-b590-d20aa35aca42/bin/uautomizer/witness.graphml [2019-11-25 08:53:29,970 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:53:29,972 INFO L168 Benchmark]: Toolchain (without parser) took 3348.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 957.8 MB in the beginning and 1.0 GB in the end (delta: -50.8 MB). Peak memory consumption was 91.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:29,972 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:53:29,972 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.58 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 941.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:29,973 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:29,973 INFO L168 Benchmark]: Boogie Preprocessor took 31.40 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. [2019-11-25 08:53:29,974 INFO L168 Benchmark]: RCFGBuilder took 553.11 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: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:29,974 INFO L168 Benchmark]: TraceAbstraction took 2363.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 93.8 MB). Peak memory consumption was 93.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:29,974 INFO L168 Benchmark]: Witness Printer took 86.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:29,976 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 224.58 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 941.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 85.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.40 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 553.11 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: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2363.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 93.8 MB). Peak memory consumption was 93.8 MB. Max. memory is 11.5 GB. * Witness Printer took 86.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 71]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant [2019-11-25 08:53:29,982 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:53:29,983 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 58]: Loop Invariant [2019-11-25 08:53:29,984 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:53:29,984 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && 1bv32 == \result) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant [2019-11-25 08:53:29,985 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:53:29,985 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && !~fp.eq~FLOAT(\result, \result) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Result: SAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 51 SDtfs, 18 SDslu, 65 SDs, 0 SdLazy, 48 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 35 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 11 QuantifiedInterpolants, 2730 SizeOfPredicates, 19 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 correct! Received shutdown request...