./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/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 887f0640b1b5afa2d39789f5b16e950cef616033 ............................................................................................................................................................................................................................................................................ 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_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/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 887f0640b1b5afa2d39789f5b16e950cef616033 ......................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 21:47:28,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 21:47:28,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 21:47:28,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 21:47:28,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 21:47:28,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 21:47:28,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 21:47:28,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 21:47:28,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 21:47:28,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 21:47:28,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 21:47:28,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 21:47:28,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 21:47:28,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 21:47:28,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 21:47:28,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 21:47:28,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 21:47:28,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 21:47:28,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 21:47:28,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 21:47:28,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 21:47:28,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 21:47:28,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 21:47:28,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 21:47:28,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 21:47:28,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 21:47:28,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 21:47:28,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 21:47:28,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 21:47:28,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 21:47:28,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 21:47:28,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 21:47:28,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 21:47:28,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 21:47:28,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 21:47:28,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 21:47:28,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 21:47:28,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 21:47:28,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 21:47:28,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 21:47:28,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 21:47:28,467 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 21:47:28,479 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 21:47:28,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 21:47:28,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 21:47:28,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 21:47:28,481 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 21:47:28,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 21:47:28,481 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 21:47:28,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 21:47:28,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 21:47:28,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 21:47:28,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 21:47:28,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 21:47:28,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 21:47:28,483 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 21:47:28,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 21:47:28,483 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 21:47:28,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 21:47:28,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 21:47:28,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 21:47:28,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 21:47:28,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 21:47:28,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 21:47:28,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 21:47:28,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 21:47:28,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 21:47:28,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 21:47:28,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 21:47:28,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 21:47:28,486 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_dbb31771-595f-41bd-961d-58be5024cac2/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 -> 887f0640b1b5afa2d39789f5b16e950cef616033 [2019-11-19 21:47:28,619 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 21:47:28,629 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 21:47:28,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 21:47:28,632 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 21:47:28,633 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 21:47:28,633 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2019-11-19 21:47:28,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/data/a42490977/fa74e530419949cea9c61d0bd2b91c22/FLAGa2b5c4cec [2019-11-19 21:47:29,092 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 21:47:29,092 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2019-11-19 21:47:29,098 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/data/a42490977/fa74e530419949cea9c61d0bd2b91c22/FLAGa2b5c4cec [2019-11-19 21:47:29,471 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/data/a42490977/fa74e530419949cea9c61d0bd2b91c22 [2019-11-19 21:47:29,474 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 21:47:29,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 21:47:29,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 21:47:29,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 21:47:29,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 21:47:29,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:47:29" (1/1) ... [2019-11-19 21:47:29,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@329e6471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:29, skipping insertion in model container [2019-11-19 21:47:29,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:47:29" (1/1) ... [2019-11-19 21:47:29,490 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 21:47:29,503 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 21:47:29,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:47:29,651 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 21:47:29,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:47:29,752 INFO L192 MainTranslator]: Completed translation [2019-11-19 21:47:29,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:29 WrapperNode [2019-11-19 21:47:29,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 21:47:29,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 21:47:29,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 21:47:29,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 21:47:29,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:29" (1/1) ... [2019-11-19 21:47:29,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:29" (1/1) ... [2019-11-19 21:47:29,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 21:47:29,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 21:47:29,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 21:47:29,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 21:47:29,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:29" (1/1) ... [2019-11-19 21:47:29,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:29" (1/1) ... [2019-11-19 21:47:29,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:29" (1/1) ... [2019-11-19 21:47:29,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:29" (1/1) ... [2019-11-19 21:47:29,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:29" (1/1) ... [2019-11-19 21:47:29,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:29" (1/1) ... [2019-11-19 21:47:29,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:29" (1/1) ... [2019-11-19 21:47:29,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 21:47:29,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 21:47:29,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 21:47:29,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 21:47:29,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/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 [2019-11-19 21:47:29,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 21:47:29,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-19 21:47:29,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 21:47:29,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-19 21:47:29,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 21:47:29,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 21:47:29,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 21:47:29,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 21:47:30,110 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 21:47:30,110 INFO L285 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-19 21:47:30,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:47:30 BoogieIcfgContainer [2019-11-19 21:47:30,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 21:47:30,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 21:47:30,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 21:47:30,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 21:47:30,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:47:29" (1/3) ... [2019-11-19 21:47:30,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b6613d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:47:30, skipping insertion in model container [2019-11-19 21:47:30,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:29" (2/3) ... [2019-11-19 21:47:30,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b6613d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:47:30, skipping insertion in model container [2019-11-19 21:47:30,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:47:30" (3/3) ... [2019-11-19 21:47:30,125 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2019-11-19 21:47:30,134 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 21:47:30,139 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 21:47:30,148 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 21:47:30,181 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 21:47:30,181 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 21:47:30,181 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 21:47:30,181 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 21:47:30,182 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 21:47:30,182 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 21:47:30,182 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 21:47:30,182 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 21:47:30,198 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-19 21:47:30,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 21:47:30,216 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:47:30,217 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:47:30,217 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:47:30,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:47:30,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1641221055, now seen corresponding path program 1 times [2019-11-19 21:47:30,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:47:30,231 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798863584] [2019-11-19 21:47:30,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:47:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:47:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:47:30,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798863584] [2019-11-19 21:47:30,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:47:30,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 21:47:30,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052361156] [2019-11-19 21:47:30,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 21:47:30,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:47:30,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 21:47:30,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 21:47:30,333 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-11-19 21:47:30,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:47:30,347 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2019-11-19 21:47:30,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 21:47:30,348 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-19 21:47:30,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:47:30,355 INFO L225 Difference]: With dead ends: 36 [2019-11-19 21:47:30,355 INFO L226 Difference]: Without dead ends: 16 [2019-11-19 21:47:30,358 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 [2019-11-19 21:47:30,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-19 21:47:30,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-19 21:47:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-19 21:47:30,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-19 21:47:30,383 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2019-11-19 21:47:30,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:47:30,383 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-19 21:47:30,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 21:47:30,383 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-19 21:47:30,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-19 21:47:30,384 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:47:30,384 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:47:30,384 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:47:30,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:47:30,385 INFO L82 PathProgramCache]: Analyzing trace with hash 558264036, now seen corresponding path program 1 times [2019-11-19 21:47:30,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:47:30,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412818220] [2019-11-19 21:47:30,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:47:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:47:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:47:30,456 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 21:47:30,456 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 21:47:30,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:47:30 BoogieIcfgContainer [2019-11-19 21:47:30,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 21:47:30,481 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 21:47:30,481 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 21:47:30,481 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 21:47:30,482 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:47:30" (3/4) ... [2019-11-19 21:47:30,485 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 21:47:30,485 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 21:47:30,486 INFO L168 Benchmark]: Toolchain (without parser) took 1011.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -148.5 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. [2019-11-19 21:47:30,487 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:47:30,488 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -200.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-19 21:47:30,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.43 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. [2019-11-19 21:47:30,489 INFO L168 Benchmark]: Boogie Preprocessor took 28.95 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-11-19 21:47:30,489 INFO L168 Benchmark]: RCFGBuilder took 297.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. [2019-11-19 21:47:30,490 INFO L168 Benchmark]: TraceAbstraction took 368.33 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-11-19 21:47:30,490 INFO L168 Benchmark]: Witness Printer took 3.99 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. [2019-11-19 21:47:30,493 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 277.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -200.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.43 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. * Boogie Preprocessor took 28.95 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 297.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 368.33 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.99 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: 50]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 49, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L45] float x = 0.0f; [L13] __uint32_t ix; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (ix) = gf_u.word [L20] ieee_float_shape_type sf_u; [L21] sf_u.word = (ix & 0x7fffffff) [L22] EXPR sf_u.value [L22] (x) = sf_u.value [L24] return x; [L46] float res = fabs_float(x); [L49] EXPR res == 0.0f && __signbit_float(res) == 0 [L49] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L50] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 19 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=19occurred 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, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 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 0.1.24-678e011 [2019-11-19 21:47:32,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 21:47:32,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 21:47:32,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 21:47:32,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 21:47:32,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 21:47:32,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 21:47:32,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 21:47:32,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 21:47:32,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 21:47:32,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 21:47:32,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 21:47:32,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 21:47:32,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 21:47:32,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 21:47:32,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 21:47:32,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 21:47:32,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 21:47:32,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 21:47:32,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 21:47:32,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 21:47:32,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 21:47:32,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 21:47:32,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 21:47:32,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 21:47:32,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 21:47:32,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 21:47:32,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 21:47:32,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 21:47:32,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 21:47:32,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 21:47:32,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 21:47:32,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 21:47:32,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 21:47:32,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 21:47:32,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 21:47:32,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 21:47:32,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 21:47:32,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 21:47:32,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 21:47:32,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 21:47:32,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-19 21:47:32,420 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 21:47:32,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 21:47:32,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 21:47:32,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 21:47:32,423 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 21:47:32,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 21:47:32,424 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 21:47:32,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 21:47:32,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 21:47:32,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 21:47:32,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 21:47:32,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 21:47:32,427 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-19 21:47:32,427 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-19 21:47:32,427 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 21:47:32,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 21:47:32,428 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 21:47:32,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 21:47:32,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 21:47:32,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 21:47:32,429 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 21:47:32,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 21:47:32,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 21:47:32,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 21:47:32,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 21:47:32,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 21:47:32,431 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-19 21:47:32,431 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-19 21:47:32,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 21:47:32,432 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-19 21:47:32,432 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_dbb31771-595f-41bd-961d-58be5024cac2/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 -> 887f0640b1b5afa2d39789f5b16e950cef616033 [2019-11-19 21:47:32,696 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 21:47:32,707 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 21:47:32,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 21:47:32,712 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 21:47:32,712 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 21:47:32,713 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2019-11-19 21:47:32,767 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/data/e216c0a98/65e9429cc6f546d09d164891db6b23e7/FLAG6d0198620 [2019-11-19 21:47:33,139 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 21:47:33,140 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2019-11-19 21:47:33,146 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/data/e216c0a98/65e9429cc6f546d09d164891db6b23e7/FLAG6d0198620 [2019-11-19 21:47:33,498 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/data/e216c0a98/65e9429cc6f546d09d164891db6b23e7 [2019-11-19 21:47:33,501 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 21:47:33,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 21:47:33,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 21:47:33,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 21:47:33,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 21:47:33,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:47:33" (1/1) ... [2019-11-19 21:47:33,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e46790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:33, skipping insertion in model container [2019-11-19 21:47:33,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:47:33" (1/1) ... [2019-11-19 21:47:33,519 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 21:47:33,537 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 21:47:33,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:47:33,694 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 21:47:33,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:47:33,740 INFO L192 MainTranslator]: Completed translation [2019-11-19 21:47:33,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:33 WrapperNode [2019-11-19 21:47:33,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 21:47:33,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 21:47:33,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 21:47:33,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 21:47:33,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:33" (1/1) ... [2019-11-19 21:47:33,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:33" (1/1) ... [2019-11-19 21:47:33,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 21:47:33,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 21:47:33,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 21:47:33,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 21:47:33,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:33" (1/1) ... [2019-11-19 21:47:33,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:33" (1/1) ... [2019-11-19 21:47:33,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:33" (1/1) ... [2019-11-19 21:47:33,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:33" (1/1) ... [2019-11-19 21:47:33,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:33" (1/1) ... [2019-11-19 21:47:33,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:33" (1/1) ... [2019-11-19 21:47:33,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:33" (1/1) ... [2019-11-19 21:47:33,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 21:47:33,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 21:47:33,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 21:47:33,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 21:47:33,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/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 [2019-11-19 21:47:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 21:47:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-19 21:47:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-19 21:47:33,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 21:47:33,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 21:47:33,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-19 21:47:33,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-19 21:47:33,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 21:47:34,162 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 21:47:34,162 INFO L285 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-19 21:47:34,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:47:34 BoogieIcfgContainer [2019-11-19 21:47:34,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 21:47:34,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 21:47:34,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 21:47:34,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 21:47:34,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:47:33" (1/3) ... [2019-11-19 21:47:34,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e39dd98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:47:34, skipping insertion in model container [2019-11-19 21:47:34,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:33" (2/3) ... [2019-11-19 21:47:34,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e39dd98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:47:34, skipping insertion in model container [2019-11-19 21:47:34,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:47:34" (3/3) ... [2019-11-19 21:47:34,170 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2019-11-19 21:47:34,186 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 21:47:34,194 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 21:47:34,205 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 21:47:34,228 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 21:47:34,228 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 21:47:34,228 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 21:47:34,228 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 21:47:34,228 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 21:47:34,229 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 21:47:34,229 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 21:47:34,229 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 21:47:34,241 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-19 21:47:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 21:47:34,246 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:47:34,246 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:47:34,247 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:47:34,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:47:34,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1641221055, now seen corresponding path program 1 times [2019-11-19 21:47:34,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 21:47:34,261 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89422013] [2019-11-19 21:47:34,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/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 [2019-11-19 21:47:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:47:34,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-19 21:47:34,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:47:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:47:34,340 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 21:47:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:47:34,344 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89422013] [2019-11-19 21:47:34,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:47:34,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-19 21:47:34,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60377711] [2019-11-19 21:47:34,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 21:47:34,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 21:47:34,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 21:47:34,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 21:47:34,361 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-11-19 21:47:34,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:47:34,377 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2019-11-19 21:47:34,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 21:47:34,378 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-19 21:47:34,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:47:34,387 INFO L225 Difference]: With dead ends: 36 [2019-11-19 21:47:34,387 INFO L226 Difference]: Without dead ends: 16 [2019-11-19 21:47:34,390 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 21:47:34,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-19 21:47:34,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-19 21:47:34,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-19 21:47:34,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-19 21:47:34,418 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2019-11-19 21:47:34,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:47:34,418 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-19 21:47:34,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 21:47:34,418 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-19 21:47:34,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-19 21:47:34,419 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:47:34,419 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:47:34,631 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-19 21:47:34,632 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:47:34,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:47:34,632 INFO L82 PathProgramCache]: Analyzing trace with hash 558264036, now seen corresponding path program 1 times [2019-11-19 21:47:34,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 21:47:34,633 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511824765] [2019-11-19 21:47:34,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/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 [2019-11-19 21:47:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:47:34,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-19 21:47:34,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:47:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:47:34,800 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 21:47:34,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 21:47:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:47:34,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511824765] [2019-11-19 21:47:34,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:47:34,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-19 21:47:34,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564760644] [2019-11-19 21:47:34,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-19 21:47:34,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 21:47:34,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-19 21:47:34,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-19 21:47:34,918 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2019-11-19 21:47:35,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:47:35,069 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2019-11-19 21:47:35,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 21:47:35,070 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2019-11-19 21:47:35,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:47:35,071 INFO L225 Difference]: With dead ends: 19 [2019-11-19 21:47:35,071 INFO L226 Difference]: Without dead ends: 16 [2019-11-19 21:47:35,072 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2019-11-19 21:47:35,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-19 21:47:35,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-19 21:47:35,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-19 21:47:35,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2019-11-19 21:47:35,077 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 11 [2019-11-19 21:47:35,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:47:35,078 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2019-11-19 21:47:35,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-19 21:47:35,078 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2019-11-19 21:47:35,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-19 21:47:35,079 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:47:35,079 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:47:35,288 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-19 21:47:35,289 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:47:35,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:47:35,289 INFO L82 PathProgramCache]: Analyzing trace with hash -2014349959, now seen corresponding path program 1 times [2019-11-19 21:47:35,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 21:47:35,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260574397] [2019-11-19 21:47:35,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/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 [2019-11-19 21:47:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:47:35,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-19 21:47:35,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:47:35,497 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 21:47:35,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:47:35,546 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 21:47:35,548 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 21:47:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:47:35,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260574397] [2019-11-19 21:47:35,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:47:35,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 11] imperfect sequences [] total 17 [2019-11-19 21:47:35,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988274597] [2019-11-19 21:47:35,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-19 21:47:35,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 21:47:35,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-19 21:47:35,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2019-11-19 21:47:35,885 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 17 states. [2019-11-19 21:47:36,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:47:36,176 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2019-11-19 21:47:36,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-19 21:47:36,177 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 15 [2019-11-19 21:47:36,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:47:36,178 INFO L225 Difference]: With dead ends: 16 [2019-11-19 21:47:36,178 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 21:47:36,179 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2019-11-19 21:47:36,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 21:47:36,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 21:47:36,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 21:47:36,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 21:47:36,179 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-11-19 21:47:36,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:47:36,180 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 21:47:36,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-19 21:47:36,180 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 21:47:36,180 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 21:47:36,381 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-19 21:47:36,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-19 21:47:36,496 INFO L444 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2019-11-19 21:47:36,496 INFO L444 ceAbstractionStarter]: For program point L19-1(lines 12 25) no Hoare annotation was computed. [2019-11-19 21:47:36,496 INFO L444 ceAbstractionStarter]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2019-11-19 21:47:36,497 INFO L440 ceAbstractionStarter]: At program point L36(lines 27 37) the Hoare annotation is: (and (= (_ +zero 8 24) |ULTIMATE.start_fabs_float_#res|) (= (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~0) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~0) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~0)) (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) |ULTIMATE.start_main_#t~short8| (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_fabs_float_~ix~0)))) [2019-11-19 21:47:36,497 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-19 21:47:36,497 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-19 21:47:36,497 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-19 21:47:36,497 INFO L440 ceAbstractionStarter]: At program point L24(lines 12 25) the Hoare annotation is: (and (= (_ +zero 8 24) |ULTIMATE.start_fabs_float_#res|) (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_fabs_float_~ix~0)))) [2019-11-19 21:47:36,497 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2019-11-19 21:47:36,497 INFO L444 ceAbstractionStarter]: For program point L49(line 49) no Hoare annotation was computed. [2019-11-19 21:47:36,498 INFO L444 ceAbstractionStarter]: For program point L49-2(lines 49 52) no Hoare annotation was computed. [2019-11-19 21:47:36,498 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-19 21:47:36,498 INFO L447 ceAbstractionStarter]: At program point L54(lines 39 55) the Hoare annotation is: true [2019-11-19 21:47:36,498 INFO L444 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2019-11-19 21:47:36,498 INFO L444 ceAbstractionStarter]: For program point L30-1(lines 30 34) no Hoare annotation was computed. [2019-11-19 21:47:36,498 INFO L440 ceAbstractionStarter]: At program point L30-2(lines 30 34) the Hoare annotation is: (and (= (_ +zero 8 24) |ULTIMATE.start_fabs_float_#res|) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) |ULTIMATE.start_main_#t~short8| (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_fabs_float_~ix~0)))) [2019-11-19 21:47:36,498 INFO L444 ceAbstractionStarter]: For program point L30-3(lines 30 34) no Hoare annotation was computed. [2019-11-19 21:47:36,498 INFO L444 ceAbstractionStarter]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2019-11-19 21:47:36,498 INFO L440 ceAbstractionStarter]: At program point L14-2(lines 14 18) the Hoare annotation is: (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) [2019-11-19 21:47:36,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:47:36 BoogieIcfgContainer [2019-11-19 21:47:36,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 21:47:36,513 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 21:47:36,514 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 21:47:36,514 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 21:47:36,514 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:47:34" (3/4) ... [2019-11-19 21:47:36,517 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 21:47:36,527 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-19 21:47:36,528 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-19 21:47:36,528 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-19 21:47:36,559 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dbb31771-595f-41bd-961d-58be5024cac2/bin/uautomizer/witness.graphml [2019-11-19 21:47:36,560 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 21:47:36,561 INFO L168 Benchmark]: Toolchain (without parser) took 3058.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 956.4 MB in the beginning and 999.8 MB in the end (delta: -43.4 MB). Peak memory consumption was 120.7 MB. Max. memory is 11.5 GB. [2019-11-19 21:47:36,562 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:47:36,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.85 ms. Allocated memory is still 1.0 GB. Free memory was 956.4 MB in the beginning and 945.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-19 21:47:36,563 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -207.2 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2019-11-19 21:47:36,564 INFO L168 Benchmark]: Boogie Preprocessor took 32.50 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:47:36,564 INFO L168 Benchmark]: RCFGBuilder took 298.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2019-11-19 21:47:36,565 INFO L168 Benchmark]: TraceAbstraction took 2348.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 999.8 MB in the end (delta: 136.0 MB). Peak memory consumption was 136.0 MB. Max. memory is 11.5 GB. [2019-11-19 21:47:36,565 INFO L168 Benchmark]: Witness Printer took 46.13 ms. Allocated memory is still 1.2 GB. Free memory is still 999.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:47:36,568 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 237.85 ms. Allocated memory is still 1.0 GB. Free memory was 956.4 MB in the beginning and 945.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 90.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -207.2 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.50 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 298.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2348.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 999.8 MB in the end (delta: 136.0 MB). Peak memory consumption was 136.0 MB. Max. memory is 11.5 GB. * Witness Printer took 46.13 ms. Allocated memory is still 1.2 GB. Free memory is still 999.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: 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: 39]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: (~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((~Pluszero~LONGDOUBLE() == \result && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 34 SDtfs, 94 SDslu, 42 SDs, 0 SdLazy, 58 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 78 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 8 QuantifiedInterpolants, 4540 SizeOfPredicates, 22 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 30 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...