./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1011b_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1011b_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 333c17c406c444dae1f6637e8d10f8cdd725cd45 ........................................................................................................................................................................................................................................................................................................... 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_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1011b_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 333c17c406c444dae1f6637e8d10f8cdd725cd45 ................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-03 05:00:12,513 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 05:00:12,514 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 05:00:12,520 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 05:00:12,520 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 05:00:12,521 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 05:00:12,521 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 05:00:12,522 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 05:00:12,523 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 05:00:12,523 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 05:00:12,524 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 05:00:12,524 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 05:00:12,524 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 05:00:12,525 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 05:00:12,525 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 05:00:12,526 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 05:00:12,526 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 05:00:12,527 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 05:00:12,528 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 05:00:12,528 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 05:00:12,529 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 05:00:12,530 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 05:00:12,531 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 05:00:12,531 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 05:00:12,531 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 05:00:12,531 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 05:00:12,532 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 05:00:12,532 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 05:00:12,533 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 05:00:12,533 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 05:00:12,533 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 05:00:12,534 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 05:00:12,534 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 05:00:12,534 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 05:00:12,534 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 05:00:12,534 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 05:00:12,535 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-03 05:00:12,542 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 05:00:12,542 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 05:00:12,542 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 05:00:12,542 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 05:00:12,542 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 05:00:12,543 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 05:00:12,543 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 05:00:12,543 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 05:00:12,543 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 05:00:12,543 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 05:00:12,543 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 05:00:12,543 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 05:00:12,543 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 05:00:12,543 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 05:00:12,544 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 05:00:12,544 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 05:00:12,544 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 05:00:12,544 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 05:00:12,544 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 05:00:12,544 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 05:00:12,544 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 05:00:12,544 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 05:00:12,544 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 05:00:12,544 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 05:00:12,544 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 05:00:12,544 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 05:00:12,545 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 05:00:12,545 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 05:00:12,545 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 05:00:12,545 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 05:00:12,545 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 05:00:12,545 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 05:00:12,545 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 05:00:12,545 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 05:00:12,545 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 05:00:12,545 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 05:00:12,545 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan 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 -> Taipan 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 -> 333c17c406c444dae1f6637e8d10f8cdd725cd45 [2018-12-03 05:00:12,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 05:00:12,574 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 05:00:12,576 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 05:00:12,578 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 05:00:12,578 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 05:00:12,578 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1011b_true-unreach-call.c [2018-12-03 05:00:12,624 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/data/c85188177/e162b92c36dc41798be152dac382f0bd/FLAG5892d070e [2018-12-03 05:00:13,008 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 05:00:13,008 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/sv-benchmarks/c/float-newlib/float_req_bl_1011b_true-unreach-call.c [2018-12-03 05:00:13,012 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/data/c85188177/e162b92c36dc41798be152dac382f0bd/FLAG5892d070e [2018-12-03 05:00:13,020 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/data/c85188177/e162b92c36dc41798be152dac382f0bd [2018-12-03 05:00:13,022 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 05:00:13,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 05:00:13,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 05:00:13,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 05:00:13,027 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 05:00:13,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:00:13" (1/1) ... [2018-12-03 05:00:13,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@706fcb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:13, skipping insertion in model container [2018-12-03 05:00:13,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:00:13" (1/1) ... [2018-12-03 05:00:13,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 05:00:13,047 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 05:00:13,144 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 05:00:13,146 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 05:00:13,159 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 05:00:13,172 INFO L195 MainTranslator]: Completed translation [2018-12-03 05:00:13,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:13 WrapperNode [2018-12-03 05:00:13,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 05:00:13,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 05:00:13,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 05:00:13,173 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 05:00:13,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:13" (1/1) ... [2018-12-03 05:00:13,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:13" (1/1) ... [2018-12-03 05:00:13,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 05:00:13,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 05:00:13,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 05:00:13,190 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 05:00:13,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:13" (1/1) ... [2018-12-03 05:00:13,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:13" (1/1) ... [2018-12-03 05:00:13,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:13" (1/1) ... [2018-12-03 05:00:13,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:13" (1/1) ... [2018-12-03 05:00:13,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:13" (1/1) ... [2018-12-03 05:00:13,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:13" (1/1) ... [2018-12-03 05:00:13,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:13" (1/1) ... [2018-12-03 05:00:13,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 05:00:13,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 05:00:13,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 05:00:13,238 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 05:00:13,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/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 [2018-12-03 05:00:13,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 05:00:13,269 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 05:00:13,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-12-03 05:00:13,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-03 05:00:13,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 05:00:13,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 05:00:13,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-03 05:00:13,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 05:00:13,269 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-12-03 05:00:13,269 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-12-03 05:00:13,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 05:00:13,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 05:00:13,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-03 05:00:13,269 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-03 05:00:13,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-03 05:00:13,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 05:00:13,396 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 05:00:13,396 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-03 05:00:13,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:00:13 BoogieIcfgContainer [2018-12-03 05:00:13,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 05:00:13,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 05:00:13,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 05:00:13,398 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 05:00:13,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 05:00:13" (1/3) ... [2018-12-03 05:00:13,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b0abea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:00:13, skipping insertion in model container [2018-12-03 05:00:13,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:13" (2/3) ... [2018-12-03 05:00:13,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b0abea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:00:13, skipping insertion in model container [2018-12-03 05:00:13,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:00:13" (3/3) ... [2018-12-03 05:00:13,400 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011b_true-unreach-call.c [2018-12-03 05:00:13,406 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 05:00:13,410 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 05:00:13,419 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 05:00:13,435 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 05:00:13,435 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 05:00:13,435 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 05:00:13,435 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 05:00:13,435 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 05:00:13,435 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 05:00:13,436 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 05:00:13,436 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 05:00:13,445 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-03 05:00:13,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-03 05:00:13,450 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:00:13,450 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:00:13,451 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 05:00:13,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:00:13,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1505277509, now seen corresponding path program 1 times [2018-12-03 05:00:13,456 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 05:00:13,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:00:13,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:00:13,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:00:13,483 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 05:00:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:00:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:00:13,524 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:00:13,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 05:00:13,524 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 05:00:13,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 05:00:13,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 05:00:13,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 05:00:13,535 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2018-12-03 05:00:13,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:00:13,547 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2018-12-03 05:00:13,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 05:00:13,548 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-12-03 05:00:13,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:00:13,553 INFO L225 Difference]: With dead ends: 56 [2018-12-03 05:00:13,553 INFO L226 Difference]: Without dead ends: 28 [2018-12-03 05:00:13,554 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 05:00:13,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-03 05:00:13,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-03 05:00:13,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-03 05:00:13,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-12-03 05:00:13,575 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 17 [2018-12-03 05:00:13,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:00:13,576 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-12-03 05:00:13,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 05:00:13,576 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-12-03 05:00:13,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-03 05:00:13,576 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:00:13,576 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:00:13,576 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 05:00:13,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:00:13,577 INFO L82 PathProgramCache]: Analyzing trace with hash -820328856, now seen corresponding path program 1 times [2018-12-03 05:00:13,577 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 05:00:13,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:00:13,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:00:13,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:00:13,578 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 05:00:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 05:00:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 05:00:13,620 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 05:00:13,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 05:00:13 BoogieIcfgContainer [2018-12-03 05:00:13,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 05:00:13,636 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 05:00:13,636 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 05:00:13,636 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 05:00:13,636 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:00:13" (3/4) ... [2018-12-03 05:00:13,639 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-03 05:00:13,639 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 05:00:13,639 INFO L168 Benchmark]: Toolchain (without parser) took 616.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -101.3 MB). Peak memory consumption was 951.7 kB. Max. memory is 11.5 GB. [2018-12-03 05:00:13,640 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:00:13,640 INFO L168 Benchmark]: CACSL2BoogieTranslator took 148.37 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-03 05:00:13,641 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.36 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 936.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-03 05:00:13,641 INFO L168 Benchmark]: Boogie Preprocessor took 47.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -163.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-03 05:00:13,641 INFO L168 Benchmark]: RCFGBuilder took 158.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2018-12-03 05:00:13,642 INFO L168 Benchmark]: TraceAbstraction took 238.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-12-03 05:00:13,642 INFO L168 Benchmark]: Witness Printer took 2.88 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:00:13,644 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 148.37 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 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 17.36 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 936.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -163.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 158.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 238.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.88 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * 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 someUnaryFLOAToperation at line 45, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L45] float x = -0.0f; [L46] CALL, EXPR fabs_float(x) VAL [\old(x)=14] [L13] __uint32_t ix; VAL [\old(x)=14, x=14] [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; VAL [\old(x)=14, \result=5, ix=12, x=5] [L46] RET, EXPR fabs_float(x) VAL [fabs_float(x)=5, x=14] [L46] float res = fabs_float(x); [L49] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=5, res == 0.0f && __signbit_float(res) == 0=0, x=14] [L49] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L50] __VERIFIER_error() VAL [res=5, x=14] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 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=32occurred 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, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 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 0.1.23-635dfa2 [2018-12-03 05:00:14,958 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 05:00:14,959 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 05:00:14,965 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 05:00:14,965 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 05:00:14,966 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 05:00:14,966 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 05:00:14,967 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 05:00:14,968 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 05:00:14,968 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 05:00:14,969 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 05:00:14,969 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 05:00:14,969 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 05:00:14,970 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 05:00:14,970 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 05:00:14,971 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 05:00:14,971 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 05:00:14,972 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 05:00:14,973 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 05:00:14,973 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 05:00:14,974 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 05:00:14,974 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 05:00:14,976 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 05:00:14,976 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 05:00:14,976 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 05:00:14,976 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 05:00:14,977 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 05:00:14,977 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 05:00:14,978 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 05:00:14,978 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 05:00:14,978 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 05:00:14,979 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 05:00:14,979 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 05:00:14,979 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 05:00:14,979 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 05:00:14,980 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 05:00:14,980 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-03 05:00:14,987 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 05:00:14,987 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 05:00:14,988 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 05:00:14,988 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 05:00:14,988 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 05:00:14,988 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 05:00:14,988 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 05:00:14,988 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 05:00:14,988 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 05:00:14,988 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 05:00:14,989 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 05:00:14,989 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 05:00:14,989 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 05:00:14,989 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 05:00:14,989 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 05:00:14,989 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 05:00:14,989 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 05:00:14,989 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-03 05:00:14,989 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-03 05:00:14,989 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 05:00:14,989 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 05:00:14,990 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-03 05:00:14,990 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 05:00:14,990 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 05:00:14,990 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 05:00:14,990 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 05:00:14,990 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 05:00:14,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 05:00:14,990 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 05:00:14,990 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 05:00:14,990 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 05:00:14,991 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-03 05:00:14,991 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 05:00:14,991 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-03 05:00:14,991 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-03 05:00:14,991 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_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan 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 -> Taipan 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 -> 333c17c406c444dae1f6637e8d10f8cdd725cd45 [2018-12-03 05:00:15,010 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 05:00:15,019 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 05:00:15,022 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 05:00:15,023 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 05:00:15,023 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 05:00:15,024 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1011b_true-unreach-call.c [2018-12-03 05:00:15,068 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/data/15662d29d/e6aa01f3dec34c8cb130dbc9e783e48a/FLAGad401cca3 [2018-12-03 05:00:15,452 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 05:00:15,452 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/sv-benchmarks/c/float-newlib/float_req_bl_1011b_true-unreach-call.c [2018-12-03 05:00:15,456 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/data/15662d29d/e6aa01f3dec34c8cb130dbc9e783e48a/FLAGad401cca3 [2018-12-03 05:00:15,464 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/data/15662d29d/e6aa01f3dec34c8cb130dbc9e783e48a [2018-12-03 05:00:15,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 05:00:15,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 05:00:15,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 05:00:15,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 05:00:15,470 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 05:00:15,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:00:15" (1/1) ... [2018-12-03 05:00:15,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@267733d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:15, skipping insertion in model container [2018-12-03 05:00:15,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:00:15" (1/1) ... [2018-12-03 05:00:15,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 05:00:15,486 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 05:00:15,576 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 05:00:15,579 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 05:00:15,593 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 05:00:15,607 INFO L195 MainTranslator]: Completed translation [2018-12-03 05:00:15,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:15 WrapperNode [2018-12-03 05:00:15,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 05:00:15,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 05:00:15,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 05:00:15,609 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 05:00:15,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:15" (1/1) ... [2018-12-03 05:00:15,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:15" (1/1) ... [2018-12-03 05:00:15,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 05:00:15,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 05:00:15,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 05:00:15,624 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 05:00:15,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:15" (1/1) ... [2018-12-03 05:00:15,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:15" (1/1) ... [2018-12-03 05:00:15,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:15" (1/1) ... [2018-12-03 05:00:15,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:15" (1/1) ... [2018-12-03 05:00:15,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:15" (1/1) ... [2018-12-03 05:00:15,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:15" (1/1) ... [2018-12-03 05:00:15,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:15" (1/1) ... [2018-12-03 05:00:15,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 05:00:15,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 05:00:15,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 05:00:15,644 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 05:00:15,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/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 [2018-12-03 05:00:15,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 05:00:15,712 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 05:00:15,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-12-03 05:00:15,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 05:00:15,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 05:00:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 05:00:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-12-03 05:00:15,713 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-12-03 05:00:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-03 05:00:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 05:00:15,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 05:00:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-03 05:00:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-03 05:00:15,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-03 05:00:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-03 05:00:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 05:00:15,823 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 05:00:15,861 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 05:00:15,866 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 05:00:15,867 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-03 05:00:15,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:00:15 BoogieIcfgContainer [2018-12-03 05:00:15,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 05:00:15,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 05:00:15,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 05:00:15,869 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 05:00:15,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 05:00:15" (1/3) ... [2018-12-03 05:00:15,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5857fba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:00:15, skipping insertion in model container [2018-12-03 05:00:15,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:15" (2/3) ... [2018-12-03 05:00:15,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5857fba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:00:15, skipping insertion in model container [2018-12-03 05:00:15,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:00:15" (3/3) ... [2018-12-03 05:00:15,871 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011b_true-unreach-call.c [2018-12-03 05:00:15,876 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 05:00:15,880 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 05:00:15,888 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 05:00:15,905 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-03 05:00:15,905 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 05:00:15,905 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 05:00:15,905 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 05:00:15,905 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 05:00:15,905 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 05:00:15,905 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 05:00:15,905 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 05:00:15,905 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 05:00:15,915 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-03 05:00:15,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-03 05:00:15,918 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:00:15,919 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:00:15,920 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 05:00:15,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:00:15,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1505277509, now seen corresponding path program 1 times [2018-12-03 05:00:15,925 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 05:00:15,925 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/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 [2018-12-03 05:00:15,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:00:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:00:15,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 05:00:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:00:15,972 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 05:00:15,980 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:00:15,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 05:00:15,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 05:00:15,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 05:00:15,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 05:00:15,991 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2018-12-03 05:00:16,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:00:16,005 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2018-12-03 05:00:16,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 05:00:16,006 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-12-03 05:00:16,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:00:16,011 INFO L225 Difference]: With dead ends: 56 [2018-12-03 05:00:16,011 INFO L226 Difference]: Without dead ends: 28 [2018-12-03 05:00:16,013 INFO L631 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 [2018-12-03 05:00:16,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-03 05:00:16,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-03 05:00:16,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-03 05:00:16,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-12-03 05:00:16,036 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 17 [2018-12-03 05:00:16,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:00:16,036 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-12-03 05:00:16,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 05:00:16,036 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-12-03 05:00:16,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-03 05:00:16,037 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:00:16,037 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:00:16,037 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 05:00:16,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:00:16,038 INFO L82 PathProgramCache]: Analyzing trace with hash -820328856, now seen corresponding path program 1 times [2018-12-03 05:00:16,038 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 05:00:16,038 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/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 [2018-12-03 05:00:16,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:00:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:00:16,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 05:00:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:00:16,197 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 05:00:16,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:00:16,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-03 05:00:16,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-03 05:00:16,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-03 05:00:16,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-03 05:00:16,205 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 9 states. [2018-12-03 05:00:16,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:00:16,440 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2018-12-03 05:00:16,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-03 05:00:16,440 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-12-03 05:00:16,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:00:16,441 INFO L225 Difference]: With dead ends: 31 [2018-12-03 05:00:16,441 INFO L226 Difference]: Without dead ends: 28 [2018-12-03 05:00:16,441 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-12-03 05:00:16,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-03 05:00:16,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-03 05:00:16,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-03 05:00:16,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2018-12-03 05:00:16,444 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 19 [2018-12-03 05:00:16,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:00:16,444 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2018-12-03 05:00:16,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-03 05:00:16,445 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2018-12-03 05:00:16,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-03 05:00:16,445 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:00:16,445 INFO L402 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, 1] [2018-12-03 05:00:16,445 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 05:00:16,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:00:16,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1040391693, now seen corresponding path program 1 times [2018-12-03 05:00:16,446 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 05:00:16,446 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/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 [2018-12-03 05:00:16,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:00:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:00:16,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 05:00:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:00:16,750 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 05:00:16,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:00:16,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-12-03 05:00:16,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-03 05:00:16,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-03 05:00:16,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-12-03 05:00:16,762 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand 14 states. [2018-12-03 05:00:17,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:00:17,331 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2018-12-03 05:00:17,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-03 05:00:17,332 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 27 [2018-12-03 05:00:17,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:00:17,332 INFO L225 Difference]: With dead ends: 28 [2018-12-03 05:00:17,333 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 05:00:17,333 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2018-12-03 05:00:17,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 05:00:17,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 05:00:17,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 05:00:17,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 05:00:17,334 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-12-03 05:00:17,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:00:17,334 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 05:00:17,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-03 05:00:17,334 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 05:00:17,334 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 05:00:17,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 05:00:17,379 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-03 05:00:17,379 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-03 05:00:17,380 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-03 05:00:17,380 INFO L448 ceAbstractionStarter]: For program point fabs_floatFINAL(lines 12 25) no Hoare annotation was computed. [2018-12-03 05:00:17,380 INFO L448 ceAbstractionStarter]: For program point fabs_floatEXIT(lines 12 25) no Hoare annotation was computed. [2018-12-03 05:00:17,380 INFO L451 ceAbstractionStarter]: At program point fabs_floatENTRY(lines 12 25) the Hoare annotation is: true [2018-12-03 05:00:17,380 INFO L448 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2018-12-03 05:00:17,380 INFO L448 ceAbstractionStarter]: For program point L19-1(lines 12 25) no Hoare annotation was computed. [2018-12-03 05:00:17,380 INFO L448 ceAbstractionStarter]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2018-12-03 05:00:17,380 INFO L448 ceAbstractionStarter]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2018-12-03 05:00:17,381 INFO L444 ceAbstractionStarter]: At program point L14-2(lines 14 18) the Hoare annotation is: (= fabs_float_~x |fabs_float_#in~x|) [2018-12-03 05:00:17,381 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-03 05:00:17,381 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-03 05:00:17,381 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-03 05:00:17,381 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-03 05:00:17,381 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 39 55) the Hoare annotation is: true [2018-12-03 05:00:17,381 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 39 55) no Hoare annotation was computed. [2018-12-03 05:00:17,381 INFO L448 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-12-03 05:00:17,381 INFO L448 ceAbstractionStarter]: For program point L49(line 49) no Hoare annotation was computed. [2018-12-03 05:00:17,382 INFO L444 ceAbstractionStarter]: At program point L49-1(line 49) the Hoare annotation is: (and |main_#t~short8| (= main_~x~0 (fp.neg (_ +zero 8 24))) (exists ((fabs_float_~ix~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) fabs_float_~ix~0) ((_ extract 30 23) fabs_float_~ix~0) ((_ extract 22 0) fabs_float_~ix~0)) (fp.neg (_ +zero 8 24))) (= main_~res~0 (let ((.cse0 (bvand (_ bv2147483647 32) fabs_float_~ix~0))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))))))) [2018-12-03 05:00:17,382 INFO L448 ceAbstractionStarter]: For program point L49-2(line 49) no Hoare annotation was computed. [2018-12-03 05:00:17,382 INFO L444 ceAbstractionStarter]: At program point L46(line 46) the Hoare annotation is: (= main_~x~0 (fp.neg (_ +zero 8 24))) [2018-12-03 05:00:17,382 INFO L448 ceAbstractionStarter]: For program point L46-1(line 46) no Hoare annotation was computed. [2018-12-03 05:00:17,382 INFO L448 ceAbstractionStarter]: For program point L49-4(lines 49 52) no Hoare annotation was computed. [2018-12-03 05:00:17,382 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 39 55) no Hoare annotation was computed. [2018-12-03 05:00:17,382 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2018-12-03 05:00:17,383 INFO L448 ceAbstractionStarter]: For program point L30-1(lines 30 34) no Hoare annotation was computed. [2018-12-03 05:00:17,383 INFO L444 ceAbstractionStarter]: At program point L30-2(lines 30 34) the Hoare annotation is: (= |__signbit_float_#in~x| __signbit_float_~x) [2018-12-03 05:00:17,383 INFO L448 ceAbstractionStarter]: For program point L30-3(lines 30 34) no Hoare annotation was computed. [2018-12-03 05:00:17,383 INFO L448 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 27 37) no Hoare annotation was computed. [2018-12-03 05:00:17,383 INFO L451 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 27 37) the Hoare annotation is: true [2018-12-03 05:00:17,383 INFO L448 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 27 37) no Hoare annotation was computed. [2018-12-03 05:00:17,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 05:00:17 BoogieIcfgContainer [2018-12-03 05:00:17,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 05:00:17,393 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 05:00:17,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 05:00:17,393 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 05:00:17,394 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:00:15" (3/4) ... [2018-12-03 05:00:17,396 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-03 05:00:17,400 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-03 05:00:17,401 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fabs_float [2018-12-03 05:00:17,401 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-03 05:00:17,401 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-12-03 05:00:17,404 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-12-03 05:00:17,404 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-12-03 05:00:17,404 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-03 05:00:17,421 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-12-03 05:00:17,421 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-03 05:00:17,432 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_90a05c53-7420-48df-a331-70103d6bab9a/bin-2019/utaipan/witness.graphml [2018-12-03 05:00:17,432 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 05:00:17,433 INFO L168 Benchmark]: Toolchain (without parser) took 1966.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 943.4 MB in the beginning and 948.7 MB in the end (delta: -5.3 MB). Peak memory consumption was 133.6 MB. Max. memory is 11.5 GB. [2018-12-03 05:00:17,434 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:00:17,434 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.28 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-03 05:00:17,435 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.63 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-03 05:00:17,435 INFO L168 Benchmark]: Boogie Preprocessor took 19.73 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:00:17,436 INFO L168 Benchmark]: RCFGBuilder took 222.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -181.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-12-03 05:00:17,436 INFO L168 Benchmark]: TraceAbstraction took 1525.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 948.7 MB in the end (delta: 159.9 MB). Peak memory consumption was 159.9 MB. Max. memory is 11.5 GB. [2018-12-03 05:00:17,436 INFO L168 Benchmark]: Witness Printer took 39.24 ms. Allocated memory is still 1.2 GB. Free memory is still 948.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:00:17,438 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.28 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 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 15.63 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.73 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 222.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -181.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1525.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 948.7 MB in the end (delta: 159.9 MB). Peak memory consumption was 159.9 MB. Max. memory is 11.5 GB. * Witness Printer took 39.24 ms. Allocated memory is still 1.2 GB. Free memory is still 948.7 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: 30]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: x == \old(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 27 SDslu, 277 SDs, 0 SdLazy, 158 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 12 PreInvPairs, 15 NumberOfFragments, 49 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 60 ConstructedInterpolants, 14 QuantifiedInterpolants, 11832 SizeOfPredicates, 13 NumberOfNonLiveVariables, 172 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...