./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/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 20ebedc7025deba0ba6b1d81eeaced9b389ea599 ....................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/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 20ebedc7025deba0ba6b1d81eeaced9b389ea599 ................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 08:34:47,468 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:34:47,469 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:34:47,479 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:34:47,479 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:34:47,480 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:34:47,481 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:34:47,483 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:34:47,484 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:34:47,485 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:34:47,486 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:34:47,486 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:34:47,487 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:34:47,487 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:34:47,488 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:34:47,489 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:34:47,490 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:34:47,492 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:34:47,494 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:34:47,495 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:34:47,496 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:34:47,497 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:34:47,498 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:34:47,498 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:34:47,498 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:34:47,499 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:34:47,500 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:34:47,501 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:34:47,501 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:34:47,502 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:34:47,502 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:34:47,503 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:34:47,503 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:34:47,503 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:34:47,504 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:34:47,505 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:34:47,505 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 08:34:47,513 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:34:47,513 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:34:47,513 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:34:47,513 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 08:34:47,514 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:34:47,514 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:34:47,514 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:34:47,514 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:34:47,515 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:34:47,515 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 08:34:47,515 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:34:47,515 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:34:47,515 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:34:47,515 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:34:47,515 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:34:47,516 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:34:47,516 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:34:47,516 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:34:47,516 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:34:47,516 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:34:47,516 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:34:47,517 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:34:47,517 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:34:47,517 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:34:47,517 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:34:47,517 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:34:47,517 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:34:47,517 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 08:34:47,518 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:34:47,518 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 08:34:47,518 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/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 -> 20ebedc7025deba0ba6b1d81eeaced9b389ea599 [2018-11-18 08:34:47,540 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:34:47,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:34:47,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:34:47,552 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:34:47,552 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:34:47,552 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c [2018-11-18 08:34:47,590 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/data/9d0cc03c3/4eecb6a9c2234696a05c97b4a7ba41ac/FLAGb70812545 [2018-11-18 08:34:47,937 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:34:47,937 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c [2018-11-18 08:34:47,942 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/data/9d0cc03c3/4eecb6a9c2234696a05c97b4a7ba41ac/FLAGb70812545 [2018-11-18 08:34:48,351 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/data/9d0cc03c3/4eecb6a9c2234696a05c97b4a7ba41ac [2018-11-18 08:34:48,354 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:34:48,354 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 08:34:48,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:48,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:34:48,357 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:34:48,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:48" (1/1) ... [2018-11-18 08:34:48,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c51124e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:48, skipping insertion in model container [2018-11-18 08:34:48,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:48" (1/1) ... [2018-11-18 08:34:48,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:34:48,379 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:34:48,489 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:48,491 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:34:48,504 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:48,517 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:34:48,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:48 WrapperNode [2018-11-18 08:34:48,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:48,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:34:48,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:34:48,518 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:34:48,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:48" (1/1) ... [2018-11-18 08:34:48,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:48" (1/1) ... [2018-11-18 08:34:48,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:48" (1/1) ... [2018-11-18 08:34:48,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:48" (1/1) ... [2018-11-18 08:34:48,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:48" (1/1) ... [2018-11-18 08:34:48,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:48" (1/1) ... [2018-11-18 08:34:48,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:48" (1/1) ... [2018-11-18 08:34:48,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:34:48,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:34:48,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:34:48,548 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:34:48,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/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 [2018-11-18 08:34:48,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:34:48,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:34:48,621 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2018-11-18 08:34:48,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 08:34:48,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:34:48,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 08:34:48,621 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2018-11-18 08:34:48,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 08:34:48,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 08:34:48,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 08:34:48,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 08:34:48,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 08:34:48,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 08:34:48,622 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 08:34:48,622 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:34:48,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:34:48,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:34:48,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 08:34:48,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-18 08:34:48,782 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:34:48,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:48 BoogieIcfgContainer [2018-11-18 08:34:48,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:34:48,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:34:48,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:34:48,786 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:34:48,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:34:48" (1/3) ... [2018-11-18 08:34:48,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16521f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:48, skipping insertion in model container [2018-11-18 08:34:48,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:48" (2/3) ... [2018-11-18 08:34:48,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16521f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:48, skipping insertion in model container [2018-11-18 08:34:48,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:48" (3/3) ... [2018-11-18 08:34:48,789 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031_true-unreach-call.c [2018-11-18 08:34:48,798 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:34:48,804 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:34:48,819 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:34:48,845 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:34:48,845 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:34:48,845 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:34:48,845 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:34:48,845 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:34:48,845 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:34:48,845 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:34:48,846 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:34:48,846 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:34:48,860 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-11-18 08:34:48,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 08:34:48,865 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:48,866 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:48,867 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:48,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:48,873 INFO L82 PathProgramCache]: Analyzing trace with hash -153295258, now seen corresponding path program 1 times [2018-11-18 08:34:48,874 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:48,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:48,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:48,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:48,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:48,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:34:48,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:34:48,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 08:34:48,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:34:48,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:34:48,980 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2018-11-18 08:34:48,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:48,994 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2018-11-18 08:34:48,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:34:48,995 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-18 08:34:48,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:34:49,002 INFO L225 Difference]: With dead ends: 60 [2018-11-18 08:34:49,003 INFO L226 Difference]: Without dead ends: 30 [2018-11-18 08:34:49,006 INFO L604 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 [2018-11-18 08:34:49,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-18 08:34:49,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-18 08:34:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 08:34:49,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-11-18 08:34:49,032 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2018-11-18 08:34:49,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:34:49,033 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-11-18 08:34:49,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 08:34:49,033 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-11-18 08:34:49,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 08:34:49,034 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:49,034 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:49,034 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:49,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:49,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1213349204, now seen corresponding path program 1 times [2018-11-18 08:34:49,035 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:49,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:49,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:49,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:49,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:49,116 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 08:34:49,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:34:49 BoogieIcfgContainer [2018-11-18 08:34:49,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 08:34:49,133 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:34:49,133 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:34:49,134 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:34:49,134 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:48" (3/4) ... [2018-11-18 08:34:49,136 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 08:34:49,136 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:34:49,137 INFO L168 Benchmark]: Toolchain (without parser) took 782.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 961.1 MB in the beginning and 1.1 GB in the end (delta: -133.1 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:49,138 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:49,138 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.17 ms. Allocated memory is still 1.0 GB. Free memory was 961.1 MB in the beginning and 945.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:49,139 INFO L168 Benchmark]: Boogie Preprocessor took 30.14 ms. Allocated memory is still 1.0 GB. Free memory is still 945.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:49,139 INFO L168 Benchmark]: RCFGBuilder took 234.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -181.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:49,140 INFO L168 Benchmark]: TraceAbstraction took 349.76 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: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:49,140 INFO L168 Benchmark]: Witness Printer took 2.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:49,142 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 162.17 ms. Allocated memory is still 1.0 GB. Free memory was 961.1 MB in the beginning and 945.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.14 ms. Allocated memory is still 1.0 GB. Free memory is still 945.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 234.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -181.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 349.76 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: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 55, overapproximation of someBinaryArithmeticFLOAToperation at line 42, overapproximation of bitwiseAnd at line 22. Possible FailurePath: [L65] float x = 0.0f / 0.0f; [L66] CALL, EXPR round_float(x) VAL [\old(x)=10] [L12] __uint32_t w; [L14] int exponent_less_127; VAL [\old(x)=10, x=10] [L17] FCALL ieee_float_shape_type gf_u; [L18] FCALL gf_u.value = (x) [L19] EXPR, FCALL gf_u.word [L19] (w) = gf_u.word [L20] COND FALSE !(0) VAL [\old(x)=10, w=8, x=10] [L22] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=10, exponent_less_127=128, w=8, x=10] [L24] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=10, exponent_less_127=128, w=8, x=10] [L40] COND TRUE exponent_less_127 == 128 [L42] RET return x + x; VAL [\old(x)=10, exponent_less_127=128, w=8, x=10] [L66] EXPR round_float(x) VAL [round_float(x)=9, x=10] [L66] float res = round_float(x); [L69] CALL, EXPR isnan_float(res) VAL [\old(x)=9] [L55] RET return x != x; VAL [\old(x)=9, \result=0, x=9] [L69] EXPR isnan_float(res) VAL [isnan_float(res)=0, res=9, x=10] [L69] COND TRUE !isnan_float(res) [L70] __VERIFIER_error() VAL [res=9, x=10] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 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=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.23-5842f4b [2018-11-18 08:34:50,535 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:34:50,536 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:34:50,545 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:34:50,545 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:34:50,546 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:34:50,546 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:34:50,548 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:34:50,549 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:34:50,549 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:34:50,550 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:34:50,550 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:34:50,551 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:34:50,551 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:34:50,552 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:34:50,552 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:34:50,553 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:34:50,554 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:34:50,555 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:34:50,556 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:34:50,557 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:34:50,558 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:34:50,559 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:34:50,560 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:34:50,560 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:34:50,560 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:34:50,561 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:34:50,562 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:34:50,562 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:34:50,563 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:34:50,563 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:34:50,563 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:34:50,564 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:34:50,564 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:34:50,564 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:34:50,565 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:34:50,565 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 08:34:50,575 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:34:50,576 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:34:50,576 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:34:50,576 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 08:34:50,577 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:34:50,577 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:34:50,577 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:34:50,577 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:34:50,577 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:34:50,577 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:34:50,578 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:34:50,578 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:34:50,578 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:34:50,578 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:34:50,578 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 08:34:50,578 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 08:34:50,578 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:34:50,578 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:34:50,579 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:34:50,579 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:34:50,579 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:34:50,579 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:34:50,579 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:34:50,579 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:34:50,579 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:34:50,580 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:34:50,580 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:34:50,580 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:34:50,580 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 08:34:50,580 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:34:50,580 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 08:34:50,580 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 08:34:50,581 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/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 -> 20ebedc7025deba0ba6b1d81eeaced9b389ea599 [2018-11-18 08:34:50,611 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:34:50,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:34:50,622 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:34:50,623 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:34:50,623 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:34:50,624 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c [2018-11-18 08:34:50,667 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/data/1f0aa9d3e/80aef87c70194c209893558992ef8ff5/FLAGf3581ec9a [2018-11-18 08:34:50,999 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:34:50,999 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c [2018-11-18 08:34:51,003 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/data/1f0aa9d3e/80aef87c70194c209893558992ef8ff5/FLAGf3581ec9a [2018-11-18 08:34:51,011 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/data/1f0aa9d3e/80aef87c70194c209893558992ef8ff5 [2018-11-18 08:34:51,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:34:51,013 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 08:34:51,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:51,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:34:51,016 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:34:51,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:51" (1/1) ... [2018-11-18 08:34:51,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d86102c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:51, skipping insertion in model container [2018-11-18 08:34:51,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:51" (1/1) ... [2018-11-18 08:34:51,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:34:51,036 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:34:51,161 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:51,165 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:34:51,182 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:51,198 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:34:51,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:51 WrapperNode [2018-11-18 08:34:51,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:51,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:34:51,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:34:51,199 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:34:51,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:51" (1/1) ... [2018-11-18 08:34:51,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:51" (1/1) ... [2018-11-18 08:34:51,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:51" (1/1) ... [2018-11-18 08:34:51,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:51" (1/1) ... [2018-11-18 08:34:51,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:51" (1/1) ... [2018-11-18 08:34:51,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:51" (1/1) ... [2018-11-18 08:34:51,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:51" (1/1) ... [2018-11-18 08:34:51,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:34:51,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:34:51,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:34:51,230 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:34:51,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/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 [2018-11-18 08:34:51,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:34:51,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:34:51,314 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2018-11-18 08:34:51,314 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 08:34:51,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:34:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 08:34:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2018-11-18 08:34:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 08:34:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-18 08:34:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 08:34:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 08:34:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 08:34:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-18 08:34:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 08:34:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:34:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:34:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:34:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-11-18 08:34:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-18 08:34:51,453 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 08:34:51,493 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:34:51,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:51 BoogieIcfgContainer [2018-11-18 08:34:51,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:34:51,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:34:51,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:34:51,497 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:34:51,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:34:51" (1/3) ... [2018-11-18 08:34:51,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f65cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:51, skipping insertion in model container [2018-11-18 08:34:51,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:51" (2/3) ... [2018-11-18 08:34:51,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f65cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:51, skipping insertion in model container [2018-11-18 08:34:51,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:51" (3/3) ... [2018-11-18 08:34:51,500 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031_true-unreach-call.c [2018-11-18 08:34:51,508 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:34:51,514 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:34:51,522 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:34:51,542 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:34:51,542 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:34:51,542 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:34:51,542 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:34:51,543 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:34:51,543 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:34:51,543 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:34:51,543 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:34:51,543 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:34:51,553 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-11-18 08:34:51,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 08:34:51,556 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:51,557 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:51,558 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:51,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:51,561 INFO L82 PathProgramCache]: Analyzing trace with hash 347594911, now seen corresponding path program 1 times [2018-11-18 08:34:51,564 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:34:51,564 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/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 [2018-11-18 08:34:51,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:51,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:51,630 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:34:51,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:34:51,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:34:51,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 08:34:51,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:34:51,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:34:51,654 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2018-11-18 08:34:51,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:51,670 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2018-11-18 08:34:51,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:34:51,671 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 08:34:51,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:34:51,678 INFO L225 Difference]: With dead ends: 58 [2018-11-18 08:34:51,678 INFO L226 Difference]: Without dead ends: 29 [2018-11-18 08:34:51,680 INFO L604 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 [2018-11-18 08:34:51,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-18 08:34:51,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-11-18 08:34:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-18 08:34:51,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2018-11-18 08:34:51,703 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 21 [2018-11-18 08:34:51,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:34:51,703 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2018-11-18 08:34:51,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 08:34:51,704 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2018-11-18 08:34:51,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 08:34:51,704 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:51,704 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:51,705 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:51,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:51,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1603688164, now seen corresponding path program 1 times [2018-11-18 08:34:51,705 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:34:51,706 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/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 [2018-11-18 08:34:51,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:51,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:52,213 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:34:52,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:34:52,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 08:34:52,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 08:34:52,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 08:34:52,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 08:34:52,221 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 9 states. [2018-11-18 08:34:52,510 WARN L180 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-18 08:34:53,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:53,012 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2018-11-18 08:34:53,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 08:34:53,012 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-11-18 08:34:53,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:34:53,014 INFO L225 Difference]: With dead ends: 38 [2018-11-18 08:34:53,014 INFO L226 Difference]: Without dead ends: 31 [2018-11-18 08:34:53,015 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-18 08:34:53,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-18 08:34:53,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2018-11-18 08:34:53,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-18 08:34:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2018-11-18 08:34:53,022 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 22 [2018-11-18 08:34:53,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:34:53,022 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-11-18 08:34:53,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 08:34:53,022 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2018-11-18 08:34:53,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 08:34:53,023 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:53,023 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:53,023 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:53,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:53,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1800201669, now seen corresponding path program 1 times [2018-11-18 08:34:53,024 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:34:53,024 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/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 [2018-11-18 08:34:53,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:53,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:53,143 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:34:53,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:34:53,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 08:34:53,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 08:34:53,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 08:34:53,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 08:34:53,150 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 9 states. [2018-11-18 08:34:53,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:53,338 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2018-11-18 08:34:53,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 08:34:53,339 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-11-18 08:34:53,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:34:53,340 INFO L225 Difference]: With dead ends: 36 [2018-11-18 08:34:53,340 INFO L226 Difference]: Without dead ends: 28 [2018-11-18 08:34:53,340 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-18 08:34:53,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-18 08:34:53,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-18 08:34:53,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-18 08:34:53,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-11-18 08:34:53,345 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 22 [2018-11-18 08:34:53,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:34:53,345 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-11-18 08:34:53,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 08:34:53,345 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-11-18 08:34:53,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 08:34:53,346 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:53,346 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:53,346 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:53,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:53,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1229582141, now seen corresponding path program 1 times [2018-11-18 08:34:53,347 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:34:53,347 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-18 08:34:53,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:53,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:53,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:53,465 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:34:53,472 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:34:53,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 08:34:53,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 08:34:53,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 08:34:53,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 08:34:53,473 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 7 states. [2018-11-18 08:34:53,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:53,686 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-11-18 08:34:53,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 08:34:53,686 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-11-18 08:34:53,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:34:53,687 INFO L225 Difference]: With dead ends: 28 [2018-11-18 08:34:53,687 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 08:34:53,687 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-11-18 08:34:53,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 08:34:53,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 08:34:53,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 08:34:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 08:34:53,688 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-11-18 08:34:53,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:34:53,688 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:34:53,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 08:34:53,688 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 08:34:53,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 08:34:53,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 08:34:53,749 INFO L425 ceAbstractionStarter]: For program point isnan_floatFINAL(line 55) no Hoare annotation was computed. [2018-11-18 08:34:53,750 INFO L428 ceAbstractionStarter]: At program point isnan_floatENTRY(line 55) the Hoare annotation is: true [2018-11-18 08:34:53,750 INFO L425 ceAbstractionStarter]: For program point isnan_floatEXIT(line 55) no Hoare annotation was computed. [2018-11-18 08:34:53,750 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 08:34:53,750 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 08:34:53,750 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 08:34:53,750 INFO L428 ceAbstractionStarter]: At program point round_floatENTRY(lines 11 52) the Hoare annotation is: true [2018-11-18 08:34:53,750 INFO L425 ceAbstractionStarter]: For program point L27(lines 27 29) no Hoare annotation was computed. [2018-11-18 08:34:53,751 INFO L425 ceAbstractionStarter]: For program point L25(lines 25 38) no Hoare annotation was computed. [2018-11-18 08:34:53,751 INFO L425 ceAbstractionStarter]: For program point L46(lines 46 50) no Hoare annotation was computed. [2018-11-18 08:34:53,751 INFO L425 ceAbstractionStarter]: For program point L46-2(lines 11 52) no Hoare annotation was computed. [2018-11-18 08:34:53,751 INFO L425 ceAbstractionStarter]: For program point L46-3(lines 46 50) no Hoare annotation was computed. [2018-11-18 08:34:53,751 INFO L425 ceAbstractionStarter]: For program point round_floatFINAL(lines 11 52) no Hoare annotation was computed. [2018-11-18 08:34:53,751 INFO L425 ceAbstractionStarter]: For program point L40(lines 40 44) no Hoare annotation was computed. [2018-11-18 08:34:53,751 INFO L425 ceAbstractionStarter]: For program point L32(lines 32 34) no Hoare annotation was computed. [2018-11-18 08:34:53,751 INFO L425 ceAbstractionStarter]: For program point round_floatEXIT(lines 11 52) no Hoare annotation was computed. [2018-11-18 08:34:53,751 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 45) no Hoare annotation was computed. [2018-11-18 08:34:53,751 INFO L425 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-11-18 08:34:53,751 INFO L421 ceAbstractionStarter]: At program point L16-3(lines 16 20) the Hoare annotation is: (= round_float_~x |round_float_#in~x|) [2018-11-18 08:34:53,751 INFO L425 ceAbstractionStarter]: For program point L16-4(lines 16 20) no Hoare annotation was computed. [2018-11-18 08:34:53,751 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 08:34:53,752 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 08:34:53,752 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 08:34:53,752 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 08:34:53,752 INFO L425 ceAbstractionStarter]: For program point L66-1(line 66) no Hoare annotation was computed. [2018-11-18 08:34:53,752 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2018-11-18 08:34:53,752 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 57 75) the Hoare annotation is: true [2018-11-18 08:34:53,752 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 57 75) no Hoare annotation was computed. [2018-11-18 08:34:53,752 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 57 75) no Hoare annotation was computed. [2018-11-18 08:34:53,752 INFO L425 ceAbstractionStarter]: For program point L70(line 70) no Hoare annotation was computed. [2018-11-18 08:34:53,752 INFO L421 ceAbstractionStarter]: At program point L69(line 69) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~res~0 (fp.add roundNearestTiesToEven .cse0 .cse0)) (= main_~x~0 .cse0))) [2018-11-18 08:34:53,752 INFO L425 ceAbstractionStarter]: For program point L69-1(lines 69 72) no Hoare annotation was computed. [2018-11-18 08:34:53,752 INFO L421 ceAbstractionStarter]: At program point L66(line 66) the Hoare annotation is: (= main_~x~0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24))) [2018-11-18 08:34:53,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:34:53 BoogieIcfgContainer [2018-11-18 08:34:53,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 08:34:53,760 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:34:53,760 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:34:53,760 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:34:53,761 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:51" (3/4) ... [2018-11-18 08:34:53,764 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 08:34:53,768 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-11-18 08:34:53,768 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 08:34:53,768 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure round_float [2018-11-18 08:34:53,768 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 08:34:53,771 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-11-18 08:34:53,771 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 08:34:53,771 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 08:34:53,789 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-11-18 08:34:53,804 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2ff6c270-ab2b-454b-b0ff-059ac9183c59/bin-2019/uautomizer/witness.graphml [2018-11-18 08:34:53,804 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:34:53,804 INFO L168 Benchmark]: Toolchain (without parser) took 2791.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 949.7 MB in the beginning and 954.0 MB in the end (delta: -4.3 MB). Peak memory consumption was 133.6 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:53,805 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:53,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.78 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 933.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:53,805 INFO L168 Benchmark]: Boogie Preprocessor took 31.18 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:53,805 INFO L168 Benchmark]: RCFGBuilder took 263.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -173.0 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:53,806 INFO L168 Benchmark]: TraceAbstraction took 2265.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 961.0 MB in the end (delta: 145.7 MB). Peak memory consumption was 145.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:53,806 INFO L168 Benchmark]: Witness Printer took 43.59 ms. Allocated memory is still 1.2 GB. Free memory was 961.0 MB in the beginning and 954.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:53,807 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 184.78 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 933.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.18 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 263.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -173.0 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2265.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 961.0 MB in the end (delta: 145.7 MB). Peak memory consumption was 145.7 MB. Max. memory is 11.5 GB. * Witness Printer took 43.59 ms. Allocated memory is still 1.2 GB. Free memory was 961.0 MB in the beginning and 954.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: 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: 16]: Loop Invariant Derived loop invariant: x == \old(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. SAFE Result, 2.2s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 102 SDtfs, 46 SDslu, 362 SDs, 0 SdLazy, 146 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 15 NumberOfFragments, 34 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 87 ConstructedInterpolants, 8 QuantifiedInterpolants, 9390 SizeOfPredicates, 12 NumberOfNonLiveVariables, 219 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...