./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0480_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0480_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/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 d52986c59e68ce8d16e7f783a8a5ec11939c887c ................................................................................................................................................................................................................................................................................................................................... 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_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0480_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/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 d52986c59e68ce8d16e7f783a8a5ec11939c887c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimCell_3 term size 27 --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 13:22:15,936 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:22:15,937 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:22:15,945 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:22:15,945 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:22:15,946 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:22:15,946 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:22:15,947 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:22:15,948 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:22:15,948 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:22:15,949 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:22:15,949 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:22:15,950 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:22:15,951 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:22:15,951 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:22:15,952 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:22:15,953 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:22:15,954 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:22:15,955 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:22:15,956 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:22:15,957 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:22:15,958 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:22:15,960 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:22:15,960 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:22:15,960 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:22:15,961 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:22:15,961 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:22:15,962 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:22:15,962 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:22:15,963 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:22:15,963 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:22:15,964 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:22:15,964 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:22:15,964 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:22:15,964 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:22:15,965 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:22:15,965 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 13:22:15,973 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:22:15,973 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:22:15,974 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:22:15,974 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 13:22:15,974 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 13:22:15,974 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 13:22:15,974 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 13:22:15,974 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 13:22:15,974 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 13:22:15,975 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 13:22:15,975 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 13:22:15,975 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 13:22:15,975 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 13:22:15,975 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:22:15,976 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:22:15,976 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:22:15,976 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:22:15,976 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:22:15,976 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:22:15,976 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:22:15,976 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:22:15,977 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:22:15,977 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:22:15,977 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:22:15,977 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:22:15,977 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:22:15,977 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:22:15,977 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:22:15,977 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:22:15,977 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:22:15,978 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:22:15,978 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:22:15,978 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:22:15,978 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 13:22:15,978 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:22:15,978 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:22:15,978 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 13:22:15,979 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_fbac34ee-daf7-4008-afce-beec55ebcf35/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 -> d52986c59e68ce8d16e7f783a8a5ec11939c887c [2018-11-18 13:22:16,003 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:22:16,012 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:22:16,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:22:16,016 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:22:16,016 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:22:16,017 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0480_true-unreach-call.c [2018-11-18 13:22:16,064 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/data/acf672f86/9320f39547994f068c93e9f188cd42e7/FLAGfdf157a9b [2018-11-18 13:22:16,386 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:22:16,386 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/sv-benchmarks/c/float-newlib/double_req_bl_0480_true-unreach-call.c [2018-11-18 13:22:16,391 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/data/acf672f86/9320f39547994f068c93e9f188cd42e7/FLAGfdf157a9b [2018-11-18 13:22:16,401 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/data/acf672f86/9320f39547994f068c93e9f188cd42e7 [2018-11-18 13:22:16,403 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:22:16,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:22:16,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:22:16,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:22:16,408 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:22:16,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:22:16" (1/1) ... [2018-11-18 13:22:16,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d933af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:16, skipping insertion in model container [2018-11-18 13:22:16,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:22:16" (1/1) ... [2018-11-18 13:22:16,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:22:16,445 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:22:16,605 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:22:16,609 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:22:16,646 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:22:16,665 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:22:16,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:16 WrapperNode [2018-11-18 13:22:16,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:22:16,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:22:16,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:22:16,667 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:22:16,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:16" (1/1) ... [2018-11-18 13:22:16,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:16" (1/1) ... [2018-11-18 13:22:16,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:22:16,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:22:16,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:22:16,732 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:22:16,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:16" (1/1) ... [2018-11-18 13:22:16,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:16" (1/1) ... [2018-11-18 13:22:16,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:16" (1/1) ... [2018-11-18 13:22:16,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:16" (1/1) ... [2018-11-18 13:22:16,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:16" (1/1) ... [2018-11-18 13:22:16,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:16" (1/1) ... [2018-11-18 13:22:16,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:16" (1/1) ... [2018-11-18 13:22:16,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:22:16,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:22:16,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:22:16,774 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:22:16,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/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 [2018-11-18 13:22:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_acos [2018-11-18 13:22:16,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_acos [2018-11-18 13:22:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-18 13:22:16,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-18 13:22:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:22:16,815 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:22:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 13:22:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 13:22:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2018-11-18 13:22:16,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2018-11-18 13:22:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:22:16,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:22:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 13:22:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:22:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:22:16,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:22:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 13:22:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:22:17,196 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:22:17,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:22:17 BoogieIcfgContainer [2018-11-18 13:22:17,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:22:17,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:22:17,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:22:17,199 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:22:17,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:22:16" (1/3) ... [2018-11-18 13:22:17,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3beb86ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:22:17, skipping insertion in model container [2018-11-18 13:22:17,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:16" (2/3) ... [2018-11-18 13:22:17,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3beb86ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:22:17, skipping insertion in model container [2018-11-18 13:22:17,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:22:17" (3/3) ... [2018-11-18 13:22:17,202 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0480_true-unreach-call.c [2018-11-18 13:22:17,208 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:22:17,213 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:22:17,222 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:22:17,244 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:22:17,244 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:22:17,244 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:22:17,244 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:22:17,245 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:22:17,245 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:22:17,245 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:22:17,245 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:22:17,257 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states. [2018-11-18 13:22:17,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 13:22:17,263 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:22:17,263 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:22:17,265 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:22:17,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:22:17,268 INFO L82 PathProgramCache]: Analyzing trace with hash 2005938628, now seen corresponding path program 1 times [2018-11-18 13:22:17,270 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:22:17,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:22:17,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:22:17,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:22:17,299 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:22:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:22:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:22:17,373 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:22:17,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:22:17,373 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:22:17,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 13:22:17,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 13:22:17,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:22:17,387 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 2 states. [2018-11-18 13:22:17,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:22:17,406 INFO L93 Difference]: Finished difference Result 174 states and 265 transitions. [2018-11-18 13:22:17,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:22:17,407 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-11-18 13:22:17,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:22:17,414 INFO L225 Difference]: With dead ends: 174 [2018-11-18 13:22:17,414 INFO L226 Difference]: Without dead ends: 87 [2018-11-18 13:22:17,417 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:22:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-11-18 13:22:17,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-11-18 13:22:17,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-18 13:22:17,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 114 transitions. [2018-11-18 13:22:17,450 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 114 transitions. Word has length 19 [2018-11-18 13:22:17,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:22:17,450 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 114 transitions. [2018-11-18 13:22:17,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 13:22:17,450 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 114 transitions. [2018-11-18 13:22:17,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 13:22:17,452 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:22:17,452 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:22:17,452 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:22:17,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:22:17,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1990020108, now seen corresponding path program 1 times [2018-11-18 13:22:17,453 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:22:17,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:22:17,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:22:17,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:22:17,454 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:22:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:22:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:22:17,517 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 13:22:17,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:22:17 BoogieIcfgContainer [2018-11-18 13:22:17,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:22:17,546 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:22:17,546 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:22:17,546 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:22:17,546 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:22:17" (3/4) ... [2018-11-18 13:22:17,550 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 13:22:17,550 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:22:17,550 INFO L168 Benchmark]: Toolchain (without parser) took 1147.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 961.9 MB in the beginning and 1.1 GB in the end (delta: -88.1 MB). Peak memory consumption was 42.9 MB. Max. memory is 11.5 GB. [2018-11-18 13:22:17,552 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:22:17,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.76 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 940.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-11-18 13:22:17,552 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 940.4 MB in the beginning and 1.1 GB in the end (delta: -185.2 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2018-11-18 13:22:17,553 INFO L168 Benchmark]: Boogie Preprocessor took 42.21 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. [2018-11-18 13:22:17,553 INFO L168 Benchmark]: RCFGBuilder took 422.51 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: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 11.5 GB. [2018-11-18 13:22:17,554 INFO L168 Benchmark]: TraceAbstraction took 348.42 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: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:22:17,554 INFO L168 Benchmark]: Witness Printer took 4.10 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. [2018-11-18 13:22:17,557 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 261.76 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 940.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 64.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 940.4 MB in the beginning and 1.1 GB in the end (delta: -185.2 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 422.51 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: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 348.42 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: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.10 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: 237]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 145, overapproximation of bitwiseAnd at line 163, overapproximation of someBinaryArithmeticDOUBLEoperation at line 181, overapproximation of someBinaryDOUBLEComparisonOperation at line 236. Possible FailurePath: [L28] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L140-L153] static const double one_acos = 1.00000000000000000000e+00, pi = 3.14159265358979311600e+00, pio2_hi_acos = 1.57079632679489655800e+00, pio2_lo_acos = 6.12323399573676603587e-17, pS0_acos = 1.66666666666666657415e-01, pS1_acos = -3.25565818622400915405e-01, pS2_acos = 2.01212532134862925881e-01, pS3_acos = -4.00555345006794114027e-02, pS4_acos = 7.91534994289814532176e-04, pS5_acos = 3.47933107596021167570e-05, qS1_acos = -2.40339491173441421878e+00, qS2_acos = 2.02094576023350569471e+00, qS3_acos = -6.88283971605453293030e-01, qS4_acos = 7.70381505559019352791e-02; VAL [\old(one_acos)=25, \old(one_sqrt)=17, \old(pi)=19, \old(pi)=15, \old(pi)=28, \old(pS0_acos)=9, \old(pS1_acos)=26, \old(pS2_acos)=27, \old(pS3_acos)=12, \old(pS4_acos)=18, \old(pS5_acos)=29, \old(qS1_acos)=11, \old(qS2_acos)=20, \old(qS3_acos)=22, \old(qS4_acos)=13, \old(tiny_sqrt)=23, one_acos=1, one_sqrt=1, pi=785398163397448279/250000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pi=785398163397448279/500000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L232] double x = 1.0; VAL [one_acos=1, one_sqrt=1, pi=785398163397448279/250000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pi=785398163397448279/500000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1] [L233] CALL, EXPR __ieee754_acos(x) VAL [\old(x)=1, one_acos=1, one_sqrt=1, pi=785398163397448279/250000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pi=785398163397448279/500000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L156] double z, p, q, r, w, s, c, df; [L157] __int32_t hx, ix; VAL [\old(x)=1, one_acos=1, one_sqrt=1, pi=785398163397448279/250000000000000000, pi=785398163397448279/500000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1] [L159] FCALL ieee_double_shape_type gh_u; [L160] FCALL gh_u.value = (x) [L161] EXPR, FCALL gh_u.parts.msw [L161] (hx) = gh_u.parts.msw [L162] COND FALSE !(0) VAL [\old(x)=1, hx=2, one_acos=1, one_sqrt=1, pi=785398163397448279/500000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pi=785398163397448279/250000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1] [L163] ix = hx & 0x7fffffff VAL [\old(x)=1, hx=2, one_acos=1, one_sqrt=1, pi=785398163397448279/500000000000000000, pi=785398163397448279/250000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1] [L164] COND FALSE !(ix >= 0x3ff00000) VAL [\old(x)=1, hx=2, ix=0, one_acos=1, one_sqrt=1, pi=612323399573676603587/10000000000000000000000000000000000000, pi=785398163397448279/500000000000000000, pi=785398163397448279/250000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1] [L179] COND TRUE ix < 0x3fe00000 VAL [\old(x)=1, hx=2, ix=0, one_acos=1, one_sqrt=1, pi=785398163397448279/500000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pi=785398163397448279/250000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1] [L180] COND TRUE ix <= 0x3c600000 [L181] RET return pio2_hi_acos + pio2_lo_acos; VAL [\old(x)=1, hx=2, ix=0, one_acos=1, one_sqrt=1, pi=785398163397448279/250000000000000000, pi=785398163397448279/500000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1] [L233] EXPR __ieee754_acos(x) VAL [__ieee754_acos(x)=16, one_acos=1, one_sqrt=1, pi=785398163397448279/500000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pi=785398163397448279/250000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1] [L233] double res = __ieee754_acos(x); [L236] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_acos=1, one_sqrt=1, pi=785398163397448279/250000000000000000, pi=785398163397448279/500000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, res=16, res == 0.0 && __signbit_double(res) == 0=0, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1] [L236] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L237] __VERIFIER_error() VAL [one_acos=1, one_sqrt=1, pi=785398163397448279/500000000000000000, pi=785398163397448279/250000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, res=16, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 91 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 118 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=91occurred 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 13:22:18,999 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:22:19,000 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:22:19,009 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:22:19,009 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:22:19,010 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:22:19,010 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:22:19,012 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:22:19,013 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:22:19,013 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:22:19,014 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:22:19,014 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:22:19,015 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:22:19,015 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:22:19,016 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:22:19,016 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:22:19,017 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:22:19,018 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:22:19,019 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:22:19,021 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:22:19,022 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:22:19,023 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:22:19,024 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:22:19,025 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:22:19,025 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:22:19,025 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:22:19,026 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:22:19,027 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:22:19,027 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:22:19,028 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:22:19,028 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:22:19,029 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:22:19,029 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:22:19,029 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:22:19,030 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:22:19,030 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:22:19,030 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 13:22:19,040 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:22:19,040 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:22:19,041 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:22:19,041 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 13:22:19,041 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 13:22:19,041 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 13:22:19,041 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 13:22:19,042 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 13:22:19,042 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 13:22:19,042 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 13:22:19,042 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:22:19,043 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:22:19,043 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:22:19,043 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:22:19,043 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:22:19,043 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:22:19,043 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:22:19,043 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 13:22:19,043 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 13:22:19,044 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:22:19,044 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:22:19,044 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:22:19,044 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:22:19,044 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:22:19,044 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:22:19,044 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:22:19,045 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:22:19,045 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:22:19,045 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:22:19,045 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:22:19,045 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:22:19,045 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 13:22:19,045 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:22:19,045 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 13:22:19,046 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 13:22:19,046 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_fbac34ee-daf7-4008-afce-beec55ebcf35/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 -> d52986c59e68ce8d16e7f783a8a5ec11939c887c [2018-11-18 13:22:19,074 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:22:19,084 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:22:19,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:22:19,088 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:22:19,088 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:22:19,088 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0480_true-unreach-call.c [2018-11-18 13:22:19,129 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/data/0b67e736e/f7be77079e1849b9ad412f904baecca2/FLAG3829f9c70 [2018-11-18 13:22:19,548 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:22:19,548 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/sv-benchmarks/c/float-newlib/double_req_bl_0480_true-unreach-call.c [2018-11-18 13:22:19,553 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/data/0b67e736e/f7be77079e1849b9ad412f904baecca2/FLAG3829f9c70 [2018-11-18 13:22:19,562 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/data/0b67e736e/f7be77079e1849b9ad412f904baecca2 [2018-11-18 13:22:19,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:22:19,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:22:19,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:22:19,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:22:19,568 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:22:19,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:22:19" (1/1) ... [2018-11-18 13:22:19,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfac4e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:19, skipping insertion in model container [2018-11-18 13:22:19,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:22:19" (1/1) ... [2018-11-18 13:22:19,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:22:19,597 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:22:19,759 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:22:19,764 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:22:19,808 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:22:19,831 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:22:19,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:19 WrapperNode [2018-11-18 13:22:19,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:22:19,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:22:19,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:22:19,833 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:22:19,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:19" (1/1) ... [2018-11-18 13:22:19,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:19" (1/1) ... [2018-11-18 13:22:19,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:22:19,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:22:19,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:22:19,893 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:22:19,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:19" (1/1) ... [2018-11-18 13:22:19,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:19" (1/1) ... [2018-11-18 13:22:19,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:19" (1/1) ... [2018-11-18 13:22:19,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:19" (1/1) ... [2018-11-18 13:22:19,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:19" (1/1) ... [2018-11-18 13:22:19,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:19" (1/1) ... [2018-11-18 13:22:19,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:19" (1/1) ... [2018-11-18 13:22:19,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:22:19,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:22:19,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:22:19,928 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:22:19,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/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 [2018-11-18 13:22:19,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-11-18 13:22:19,967 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_acos [2018-11-18 13:22:19,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_acos [2018-11-18 13:22:19,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-18 13:22:19,967 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-18 13:22:19,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-18 13:22:19,967 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:22:19,967 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:22:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2018-11-18 13:22:19,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2018-11-18 13:22:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:22:19,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:22:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:22:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 13:22:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:22:19,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:22:19,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 13:22:19,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:22:20,104 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 13:22:22,020 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 13:22:31,385 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 13:22:31,396 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 13:22:34,456 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 13:22:34,478 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:22:34,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:22:34 BoogieIcfgContainer [2018-11-18 13:22:34,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:22:34,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:22:34,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:22:34,482 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:22:34,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:22:19" (1/3) ... [2018-11-18 13:22:34,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145fcd70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:22:34, skipping insertion in model container [2018-11-18 13:22:34,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:22:19" (2/3) ... [2018-11-18 13:22:34,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145fcd70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:22:34, skipping insertion in model container [2018-11-18 13:22:34,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:22:34" (3/3) ... [2018-11-18 13:22:34,485 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0480_true-unreach-call.c [2018-11-18 13:22:34,493 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:22:34,499 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:22:34,512 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:22:34,530 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:22:34,530 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:22:34,530 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:22:34,530 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:22:34,530 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:22:34,531 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:22:34,531 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:22:34,531 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:22:34,531 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:22:34,541 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states. [2018-11-18 13:22:34,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 13:22:34,546 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:22:34,546 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:22:34,548 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:22:34,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:22:34,553 INFO L82 PathProgramCache]: Analyzing trace with hash 2005938628, now seen corresponding path program 1 times [2018-11-18 13:22:34,557 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:22:34,558 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/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 [2018-11-18 13:22:34,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:22:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:22:34,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:22:34,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:22:34,738 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:22:34,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:22:34,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:22:34,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 13:22:34,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 13:22:34,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:22:34,760 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 2 states. [2018-11-18 13:22:34,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:22:34,782 INFO L93 Difference]: Finished difference Result 174 states and 265 transitions. [2018-11-18 13:22:34,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:22:34,783 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-11-18 13:22:34,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:22:34,792 INFO L225 Difference]: With dead ends: 174 [2018-11-18 13:22:34,792 INFO L226 Difference]: Without dead ends: 87 [2018-11-18 13:22:34,796 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:22:34,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-11-18 13:22:34,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-11-18 13:22:34,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-18 13:22:34,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 114 transitions. [2018-11-18 13:22:34,824 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 114 transitions. Word has length 19 [2018-11-18 13:22:34,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:22:34,825 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 114 transitions. [2018-11-18 13:22:34,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 13:22:34,825 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 114 transitions. [2018-11-18 13:22:34,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 13:22:34,827 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:22:34,827 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:22:34,827 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:22:34,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:22:34,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1990020108, now seen corresponding path program 1 times [2018-11-18 13:22:34,828 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:22:34,828 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/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 [2018-11-18 13:22:34,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:22:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:22:34,970 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:22:35,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:22:35,107 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:22:35,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:22:35,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 13:22:35,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 13:22:35,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 13:22:35,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 13:22:35,117 INFO L87 Difference]: Start difference. First operand 87 states and 114 transitions. Second operand 7 states. [2018-11-18 13:22:35,335 WARN L180 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-18 13:22:45,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:22:45,163 INFO L93 Difference]: Finished difference Result 104 states and 131 transitions. [2018-11-18 13:22:45,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 13:22:45,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-11-18 13:22:45,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:22:45,166 INFO L225 Difference]: With dead ends: 104 [2018-11-18 13:22:45,166 INFO L226 Difference]: Without dead ends: 84 [2018-11-18 13:22:45,166 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-18 13:22:45,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-11-18 13:22:45,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2018-11-18 13:22:45,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-11-18 13:22:45,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2018-11-18 13:22:45,172 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 20 [2018-11-18 13:22:45,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:22:45,173 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2018-11-18 13:22:45,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 13:22:45,173 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2018-11-18 13:22:45,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 13:22:45,173 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:22:45,173 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:22:45,174 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:22:45,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:22:45,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1417443507, now seen corresponding path program 1 times [2018-11-18 13:22:45,174 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:22:45,174 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/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 [2018-11-18 13:22:45,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:22:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:22:49,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:22:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:22:49,515 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:22:49,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:22:49,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 13:22:49,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 13:22:49,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 13:22:49,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 13:22:49,570 INFO L87 Difference]: Start difference. First operand 82 states and 106 transitions. Second operand 7 states. [2018-11-18 13:22:49,916 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-18 13:22:59,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:22:59,214 INFO L93 Difference]: Finished difference Result 99 states and 123 transitions. [2018-11-18 13:22:59,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:22:59,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-11-18 13:22:59,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:22:59,217 INFO L225 Difference]: With dead ends: 99 [2018-11-18 13:22:59,217 INFO L226 Difference]: Without dead ends: 83 [2018-11-18 13:22:59,218 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-18 13:22:59,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-11-18 13:22:59,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2018-11-18 13:22:59,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-11-18 13:22:59,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 104 transitions. [2018-11-18 13:22:59,225 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 104 transitions. Word has length 20 [2018-11-18 13:22:59,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:22:59,226 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 104 transitions. [2018-11-18 13:22:59,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 13:22:59,226 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 104 transitions. [2018-11-18 13:22:59,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 13:22:59,227 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:22:59,227 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:22:59,227 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:22:59,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:22:59,227 INFO L82 PathProgramCache]: Analyzing trace with hash 736739831, now seen corresponding path program 1 times [2018-11-18 13:22:59,228 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:22:59,228 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-18 13:22:59,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:22:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:22:59,970 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:23:00,087 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:23:00,088 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:23:00,091 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2018-11-18 13:23:00,130 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-11-18 13:23:00,131 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:23:00,146 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-18 13:23:00,153 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2018-11-18 13:23:00,153 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 13:23:00,154 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:23:00,157 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:23:00,171 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-18 13:23:00,171 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:57, output treesize:29 [2018-11-18 13:23:00,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:23:00,316 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:23:00,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:23:00,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 13:23:00,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 13:23:00,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 13:23:00,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:23:00,337 INFO L87 Difference]: Start difference. First operand 81 states and 104 transitions. Second operand 8 states. [2018-11-18 13:23:02,596 WARN L180 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 37 [2018-11-18 13:23:09,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:23:09,927 INFO L93 Difference]: Finished difference Result 98 states and 121 transitions. [2018-11-18 13:23:09,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 13:23:09,931 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-11-18 13:23:09,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:23:09,932 INFO L225 Difference]: With dead ends: 98 [2018-11-18 13:23:09,932 INFO L226 Difference]: Without dead ends: 83 [2018-11-18 13:23:09,932 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-18 13:23:09,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-11-18 13:23:09,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2018-11-18 13:23:09,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-11-18 13:23:09,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 103 transitions. [2018-11-18 13:23:09,937 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 103 transitions. Word has length 21 [2018-11-18 13:23:09,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:23:09,937 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 103 transitions. [2018-11-18 13:23:09,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 13:23:09,938 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 103 transitions. [2018-11-18 13:23:09,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 13:23:09,938 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:23:09,938 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:23:09,939 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:23:09,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:23:09,939 INFO L82 PathProgramCache]: Analyzing trace with hash -193067078, now seen corresponding path program 1 times [2018-11-18 13:23:09,939 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:23:09,939 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-18 13:23:09,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:23:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:23:10,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:23:10,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:23:10,079 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:23:10,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:23:10,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 13:23:10,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 13:23:10,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 13:23:10,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 13:23:10,087 INFO L87 Difference]: Start difference. First operand 81 states and 103 transitions. Second operand 5 states. [2018-11-18 13:23:14,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:23:14,356 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2018-11-18 13:23:14,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 13:23:14,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-18 13:23:14,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:23:14,358 INFO L225 Difference]: With dead ends: 88 [2018-11-18 13:23:14,358 INFO L226 Difference]: Without dead ends: 85 [2018-11-18 13:23:14,358 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 13:23:14,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-11-18 13:23:14,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-11-18 13:23:14,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-11-18 13:23:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2018-11-18 13:23:14,365 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 22 [2018-11-18 13:23:14,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:23:14,366 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2018-11-18 13:23:14,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 13:23:14,366 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2018-11-18 13:23:14,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 13:23:14,367 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:23:14,367 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:23:14,367 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:23:14,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:23:14,368 INFO L82 PathProgramCache]: Analyzing trace with hash 694436603, now seen corresponding path program 1 times [2018-11-18 13:23:14,368 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:23:14,368 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-18 13:23:14,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:23:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:23:14,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:23:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:23:14,653 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:23:14,662 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:23:14,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 13:23:14,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 13:23:14,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 13:23:14,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:23:14,663 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand 6 states. [2018-11-18 13:23:19,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:23:19,220 INFO L93 Difference]: Finished difference Result 100 states and 122 transitions. [2018-11-18 13:23:19,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 13:23:19,222 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-11-18 13:23:19,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:23:19,223 INFO L225 Difference]: With dead ends: 100 [2018-11-18 13:23:19,223 INFO L226 Difference]: Without dead ends: 85 [2018-11-18 13:23:19,224 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:23:19,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-11-18 13:23:19,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-11-18 13:23:19,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-11-18 13:23:19,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 106 transitions. [2018-11-18 13:23:19,230 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 106 transitions. Word has length 22 [2018-11-18 13:23:19,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:23:19,231 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 106 transitions. [2018-11-18 13:23:19,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 13:23:19,231 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 106 transitions. [2018-11-18 13:23:19,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 13:23:19,231 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:23:19,231 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:23:19,231 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:23:19,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:23:19,232 INFO L82 PathProgramCache]: Analyzing trace with hash 113942232, now seen corresponding path program 1 times [2018-11-18 13:23:19,232 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:23:19,232 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-18 13:23:19,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:23:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:23:23,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:23:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:23:23,930 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:23:23,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:23:23,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 13:23:23,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 13:23:23,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 13:23:23,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 13:23:23,986 INFO L87 Difference]: Start difference. First operand 85 states and 106 transitions. Second operand 7 states. [2018-11-18 13:23:27,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:23:27,588 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2018-11-18 13:23:27,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:23:27,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2018-11-18 13:23:27,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:23:27,591 INFO L225 Difference]: With dead ends: 96 [2018-11-18 13:23:27,591 INFO L226 Difference]: Without dead ends: 31 [2018-11-18 13:23:27,591 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-18 13:23:27,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-18 13:23:27,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-18 13:23:27,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 13:23:27,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 30 transitions. [2018-11-18 13:23:27,596 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 30 transitions. Word has length 28 [2018-11-18 13:23:27,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:23:27,596 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 30 transitions. [2018-11-18 13:23:27,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 13:23:27,596 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 30 transitions. [2018-11-18 13:23:27,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 13:23:27,597 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:23:27,597 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:23:27,597 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:23:27,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:23:27,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1744338154, now seen corresponding path program 1 times [2018-11-18 13:23:27,598 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:23:27,598 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fbac34ee-daf7-4008-afce-beec55ebcf35/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-18 13:23:27,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:23:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:23:27,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:23:27,793 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:23:27,797 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:23:27,798 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:23:27,799 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:23:27,801 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 85 [2018-11-18 13:23:27,923 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2018-11-18 13:23:27,943 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:23:28,144 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2018-11-18 13:23:28,145 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimCell_3 term size 27 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-18 13:23:28,147 INFO L168 Benchmark]: Toolchain (without parser) took 68582.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 205.0 MB). Free memory was 951.9 MB in the beginning and 1.2 GB in the end (delta: -237.8 MB). Peak memory consumption was 289.1 MB. Max. memory is 11.5 GB. [2018-11-18 13:23:28,148 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:23:28,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.36 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 930.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-11-18 13:23:28,148 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 930.4 MB in the beginning and 1.1 GB in the end (delta: -200.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-11-18 13:23:28,149 INFO L168 Benchmark]: Boogie Preprocessor took 35.29 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. [2018-11-18 13:23:28,149 INFO L168 Benchmark]: RCFGBuilder took 14550.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 11.5 GB. [2018-11-18 13:23:28,150 INFO L168 Benchmark]: TraceAbstraction took 53667.55 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -113.1 MB). Peak memory consumption was 270.2 MB. Max. memory is 11.5 GB. [2018-11-18 13:23:28,152 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 266.36 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 930.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 930.4 MB in the beginning and 1.1 GB in the end (delta: -200.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 14550.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 53667.55 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -113.1 MB). Peak memory consumption was 270.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimCell_3 term size 27 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimCell_3 term size 27: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...