./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0720.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0720.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/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 2099bda96984d0e4445a07fd627008694b409440 .............................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0720.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/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 2099bda96984d0e4445a07fd627008694b409440 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:24:30,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:30,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:30,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:30,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:30,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:30,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:30,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:30,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:30,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:30,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:30,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:30,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:30,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:30,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:30,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:30,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:30,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:30,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:30,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:30,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:30,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:30,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:30,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:30,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:30,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:30,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:30,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:30,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:30,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:30,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:30,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:30,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:30,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:30,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:30,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:30,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:30,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:30,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:30,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:30,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:30,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:24:30,084 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:30,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:30,085 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:30,085 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:30,086 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:30,086 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:30,086 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:24:30,086 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:30,086 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:30,086 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:24:30,086 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:24:30,087 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:30,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:30,087 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:30,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:24:30,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:30,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:30,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:24:30,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:30,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:24:30,088 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:30,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:24:30,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:24:30,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:30,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:30,098 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:30,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:30,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:30,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:30,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:30,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:24:30,099 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:24:30,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:24:30,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:24:30,100 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:30,100 INFO L138 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_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/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 -> 2099bda96984d0e4445a07fd627008694b409440 [2019-10-22 11:24:30,132 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:30,143 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:30,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:30,147 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:30,147 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:30,147 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0720.c [2019-10-22 11:24:30,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/data/8742b4146/6a80804bd009479f89074f4323c58459/FLAGc2caca9f8 [2019-10-22 11:24:30,572 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:30,575 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/sv-benchmarks/c/float-newlib/float_req_bl_0720.c [2019-10-22 11:24:30,582 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/data/8742b4146/6a80804bd009479f89074f4323c58459/FLAGc2caca9f8 [2019-10-22 11:24:30,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/data/8742b4146/6a80804bd009479f89074f4323c58459 [2019-10-22 11:24:30,958 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:30,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:30,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:30,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:30,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:30,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:30" (1/1) ... [2019-10-22 11:24:30,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c9664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:30, skipping insertion in model container [2019-10-22 11:24:30,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:30" (1/1) ... [2019-10-22 11:24:30,974 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:30,990 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:31,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:31,163 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:31,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:31,270 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:31,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:31 WrapperNode [2019-10-22 11:24:31,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:31,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:31,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:31,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:31,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:31" (1/1) ... [2019-10-22 11:24:31,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:31" (1/1) ... [2019-10-22 11:24:31,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:31,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:31,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:31,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:31,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:31" (1/1) ... [2019-10-22 11:24:31,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:31" (1/1) ... [2019-10-22 11:24:31,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:31" (1/1) ... [2019-10-22 11:24:31,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:31" (1/1) ... [2019-10-22 11:24:31,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:31" (1/1) ... [2019-10-22 11:24:31,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:31" (1/1) ... [2019-10-22 11:24:31,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:31" (1/1) ... [2019-10-22 11:24:31,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:31,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:31,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:31,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:31,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/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 [2019-10-22 11:24:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:24:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-10-22 11:24:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:24:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-10-22 11:24:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:31,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:24:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:24:31,662 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:31,662 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-10-22 11:24:31,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:31 BoogieIcfgContainer [2019-10-22 11:24:31,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:31,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:31,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:31,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:31,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:30" (1/3) ... [2019-10-22 11:24:31,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b86f0f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:31, skipping insertion in model container [2019-10-22 11:24:31,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:31" (2/3) ... [2019-10-22 11:24:31,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b86f0f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:31, skipping insertion in model container [2019-10-22 11:24:31,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:31" (3/3) ... [2019-10-22 11:24:31,670 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0720.c [2019-10-22 11:24:31,680 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:31,690 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:24:31,700 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:24:31,733 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:31,733 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:31,733 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:31,733 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:31,741 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:31,741 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:31,741 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:31,741 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:31,765 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-10-22 11:24:31,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:24:31,770 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:31,772 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:31,773 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:31,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:31,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1903734416, now seen corresponding path program 1 times [2019-10-22 11:24:31,787 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:31,787 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245163730] [2019-10-22 11:24:31,787 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:31,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:31,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:31,884 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245163730] [2019-10-22 11:24:31,884 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:31,885 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:24:31,885 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865344104] [2019-10-22 11:24:31,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:24:31,891 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:31,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:24:31,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:31,905 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-10-22 11:24:31,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:31,922 INFO L93 Difference]: Finished difference Result 64 states and 98 transitions. [2019-10-22 11:24:31,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:24:31,923 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-10-22 11:24:31,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:31,932 INFO L225 Difference]: With dead ends: 64 [2019-10-22 11:24:31,933 INFO L226 Difference]: Without dead ends: 30 [2019-10-22 11:24:31,935 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:31,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-22 11:24:31,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-10-22 11:24:31,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 11:24:31,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2019-10-22 11:24:31,967 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2019-10-22 11:24:31,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:31,967 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2019-10-22 11:24:31,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:24:31,968 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2019-10-22 11:24:31,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:24:31,968 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:31,968 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:31,969 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:31,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:31,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1484616397, now seen corresponding path program 1 times [2019-10-22 11:24:31,969 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:31,970 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928726493] [2019-10-22 11:24:31,970 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:31,970 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:31,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:24:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:24:32,045 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:24:32,046 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:24:32,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:24:32 BoogieIcfgContainer [2019-10-22 11:24:32,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:24:32,074 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:24:32,074 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:24:32,074 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:24:32,075 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:31" (3/4) ... [2019-10-22 11:24:32,078 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 11:24:32,078 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:24:32,081 INFO L168 Benchmark]: Toolchain (without parser) took 1120.54 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -102.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:32,081 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:32,082 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -153.8 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:32,082 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.93 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:32,083 INFO L168 Benchmark]: Boogie Preprocessor took 47.77 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:32,083 INFO L168 Benchmark]: RCFGBuilder took 283.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:32,084 INFO L168 Benchmark]: TraceAbstraction took 409.21 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:32,084 INFO L168 Benchmark]: Witness Printer took 5.01 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:32,087 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 310.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -153.8 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.93 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.77 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 283.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 409.21 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.01 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13, overapproximation of someBinaryArithmeticFLOAToperation at line 30, overapproximation of bitwiseAnd at line 27. Possible FailurePath: [L15] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L91] float x = 0.0f / 0.0f; [L18] float z; [L19] __uint32_t r, hx; [L20] __int32_t ix, s, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (ix) = gf_u.word [L27] hx = ix & 0x7fffffff VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L29] COND TRUE !((hx) < 0x7f800000L) [L30] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L92] float res = __ieee754_sqrtf(x); [L13] return x != x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L95] COND TRUE !isnan_float(res) [L96] __VERIFIER_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 43 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=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:24:34,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:34,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:34,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:34,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:34,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:34,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:34,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:34,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:34,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:34,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:34,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:34,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:34,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:34,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:34,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:34,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:34,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:34,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:34,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:34,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:34,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:34,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:34,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:34,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:34,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:34,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:34,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:34,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:34,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:34,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:34,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:34,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:34,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:34,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:34,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:34,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:34,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:34,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:34,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:34,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:34,082 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:24:34,093 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:34,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:34,094 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:34,095 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:34,095 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:34,095 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:34,095 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:34,095 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:34,095 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:34,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:34,096 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:34,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:34,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:34,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:24:34,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:34,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:24:34,097 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:24:34,097 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:24:34,098 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:34,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:24:34,098 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:24:34,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:24:34,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:34,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:34,098 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:34,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:34,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:34,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:34,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:34,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:24:34,099 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:24:34,099 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:24:34,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:24:34,100 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:34,100 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/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 -> 2099bda96984d0e4445a07fd627008694b409440 [2019-10-22 11:24:34,128 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:34,138 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:34,141 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:34,142 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:34,143 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:34,143 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0720.c [2019-10-22 11:24:34,188 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/data/69ce728d7/2f62279f6226483a91155627e1e5ab98/FLAGb6f0c1da8 [2019-10-22 11:24:34,577 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:34,578 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/sv-benchmarks/c/float-newlib/float_req_bl_0720.c [2019-10-22 11:24:34,585 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/data/69ce728d7/2f62279f6226483a91155627e1e5ab98/FLAGb6f0c1da8 [2019-10-22 11:24:34,595 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/data/69ce728d7/2f62279f6226483a91155627e1e5ab98 [2019-10-22 11:24:34,597 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:34,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:34,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:34,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:34,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:34,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:34" (1/1) ... [2019-10-22 11:24:34,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e9f013f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:34, skipping insertion in model container [2019-10-22 11:24:34,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:34" (1/1) ... [2019-10-22 11:24:34,614 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:34,635 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:34,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:34,833 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:34,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:34,898 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:34,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:34 WrapperNode [2019-10-22 11:24:34,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:34,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:34,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:34,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:34,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:34" (1/1) ... [2019-10-22 11:24:34,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:34" (1/1) ... [2019-10-22 11:24:35,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:35,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:35,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:35,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:35,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:34" (1/1) ... [2019-10-22 11:24:35,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:34" (1/1) ... [2019-10-22 11:24:35,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:34" (1/1) ... [2019-10-22 11:24:35,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:34" (1/1) ... [2019-10-22 11:24:35,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:34" (1/1) ... [2019-10-22 11:24:35,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:34" (1/1) ... [2019-10-22 11:24:35,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:34" (1/1) ... [2019-10-22 11:24:35,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:35,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:35,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:35,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:35,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/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 [2019-10-22 11:24:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:24:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-10-22 11:24:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-10-22 11:24:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:35,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-10-22 11:24:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-10-22 11:24:35,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:24:35,914 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:35,915 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-10-22 11:24:35,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:35 BoogieIcfgContainer [2019-10-22 11:24:35,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:35,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:35,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:35,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:35,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:34" (1/3) ... [2019-10-22 11:24:35,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28dbe8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:35, skipping insertion in model container [2019-10-22 11:24:35,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:34" (2/3) ... [2019-10-22 11:24:35,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28dbe8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:35, skipping insertion in model container [2019-10-22 11:24:35,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:35" (3/3) ... [2019-10-22 11:24:35,924 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0720.c [2019-10-22 11:24:35,933 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:35,939 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:24:35,949 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:24:35,987 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:35,987 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:35,987 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:35,987 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:35,987 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:35,987 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:35,988 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:35,988 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:36,003 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-10-22 11:24:36,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:24:36,008 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:36,009 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:36,011 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:36,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:36,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1903734416, now seen corresponding path program 1 times [2019-10-22 11:24:36,025 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:36,026 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717722025] [2019-10-22 11:24:36,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/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 [2019-10-22 11:24:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:36,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:24:36,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:36,215 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:36,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:36,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717722025] [2019-10-22 11:24:36,220 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:36,220 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:24:36,220 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113932789] [2019-10-22 11:24:36,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:24:36,225 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:36,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:24:36,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:36,240 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-10-22 11:24:36,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:36,258 INFO L93 Difference]: Finished difference Result 64 states and 98 transitions. [2019-10-22 11:24:36,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:24:36,259 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-10-22 11:24:36,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:36,269 INFO L225 Difference]: With dead ends: 64 [2019-10-22 11:24:36,269 INFO L226 Difference]: Without dead ends: 30 [2019-10-22 11:24:36,272 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:36,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-22 11:24:36,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-10-22 11:24:36,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 11:24:36,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2019-10-22 11:24:36,304 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2019-10-22 11:24:36,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:36,304 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2019-10-22 11:24:36,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:24:36,309 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2019-10-22 11:24:36,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:24:36,309 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:36,309 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:36,510 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-10-22 11:24:36,510 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:36,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:36,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1484616397, now seen corresponding path program 1 times [2019-10-22 11:24:36,511 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:36,511 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38226037] [2019-10-22 11:24:36,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/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 [2019-10-22 11:24:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:36,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 11:24:36,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:36,704 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:38,970 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-10-22 11:24:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:38,974 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38226037] [2019-10-22 11:24:38,974 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:38,974 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-10-22 11:24:38,975 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945334606] [2019-10-22 11:24:38,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 11:24:38,976 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:38,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 11:24:38,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:24:38,977 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 9 states. [2019-10-22 11:24:39,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:39,608 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2019-10-22 11:24:39,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:24:39,608 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2019-10-22 11:24:39,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:39,609 INFO L225 Difference]: With dead ends: 35 [2019-10-22 11:24:39,609 INFO L226 Difference]: Without dead ends: 30 [2019-10-22 11:24:39,610 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-10-22 11:24:39,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-22 11:24:39,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-10-22 11:24:39,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 11:24:39,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-10-22 11:24:39,615 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 10 [2019-10-22 11:24:39,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:39,615 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-10-22 11:24:39,615 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 11:24:39,615 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-10-22 11:24:39,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:24:39,620 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:39,620 INFO L380 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] [2019-10-22 11:24:39,820 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-10-22 11:24:39,821 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:39,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:39,821 INFO L82 PathProgramCache]: Analyzing trace with hash 591854048, now seen corresponding path program 1 times [2019-10-22 11:24:39,822 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:39,822 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040143730] [2019-10-22 11:24:39,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/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 [2019-10-22 11:24:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:39,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:24:39,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:39,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:39,929 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:39,986 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040143730] [2019-10-22 11:24:39,986 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:39,986 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-22 11:24:39,986 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519272396] [2019-10-22 11:24:39,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:24:39,987 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:39,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:24:39,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:24:39,988 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 8 states. [2019-10-22 11:24:40,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:40,038 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2019-10-22 11:24:40,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:24:40,039 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-10-22 11:24:40,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:40,039 INFO L225 Difference]: With dead ends: 30 [2019-10-22 11:24:40,039 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:24:40,040 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:24:40,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:24:40,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:24:40,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:24:40,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:24:40,040 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-10-22 11:24:40,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:40,041 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:24:40,041 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:24:40,041 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:24:40,041 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:24:40,249 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-10-22 11:24:40,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:24:40,311 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:24:40,311 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:24:40,312 INFO L439 ceAbstractionStarter]: At program point L53-2(lines 53 62) the Hoare annotation is: false [2019-10-22 11:24:40,312 INFO L443 ceAbstractionStarter]: For program point L53-3(lines 17 82) no Hoare annotation was computed. [2019-10-22 11:24:40,312 INFO L443 ceAbstractionStarter]: For program point L45(lines 45 46) no Hoare annotation was computed. [2019-10-22 11:24:40,312 INFO L443 ceAbstractionStarter]: For program point L45-2(lines 45 46) no Hoare annotation was computed. [2019-10-22 11:24:40,312 INFO L443 ceAbstractionStarter]: For program point L95(lines 95 98) no Hoare annotation was computed. [2019-10-22 11:24:40,312 INFO L443 ceAbstractionStarter]: For program point L29(lines 29 30) no Hoare annotation was computed. [2019-10-22 11:24:40,312 INFO L439 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= |ULTIMATE.start___ieee754_sqrtf_#res| (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 .cse0) .cse0)) (= ULTIMATE.start___ieee754_sqrtf_~x .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|))) [2019-10-22 11:24:40,313 INFO L443 ceAbstractionStarter]: For program point L38(lines 38 42) no Hoare annotation was computed. [2019-10-22 11:24:40,313 INFO L443 ceAbstractionStarter]: For program point L38-2(lines 38 42) no Hoare annotation was computed. [2019-10-22 11:24:40,313 INFO L443 ceAbstractionStarter]: For program point L96(line 96) no Hoare annotation was computed. [2019-10-22 11:24:40,313 INFO L443 ceAbstractionStarter]: For program point L55(lines 55 59) no Hoare annotation was computed. [2019-10-22 11:24:40,313 INFO L443 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2019-10-22 11:24:40,313 INFO L443 ceAbstractionStarter]: For program point L55-2(lines 55 59) no Hoare annotation was computed. [2019-10-22 11:24:40,313 INFO L439 ceAbstractionStarter]: At program point L22-2(lines 22 26) the Hoare annotation is: (= ULTIMATE.start___ieee754_sqrtf_~x (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24))) [2019-10-22 11:24:40,314 INFO L443 ceAbstractionStarter]: For program point L22-3(lines 22 26) no Hoare annotation was computed. [2019-10-22 11:24:40,314 INFO L443 ceAbstractionStarter]: For program point L39-2(lines 39 40) no Hoare annotation was computed. [2019-10-22 11:24:40,314 INFO L439 ceAbstractionStarter]: At program point L39-3(lines 39 40) the Hoare annotation is: false [2019-10-22 11:24:40,314 INFO L443 ceAbstractionStarter]: For program point L39-4(lines 39 40) no Hoare annotation was computed. [2019-10-22 11:24:40,314 INFO L443 ceAbstractionStarter]: For program point L64(lines 64 73) no Hoare annotation was computed. [2019-10-22 11:24:40,314 INFO L439 ceAbstractionStarter]: At program point L81(lines 17 82) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= |ULTIMATE.start___ieee754_sqrtf_#res| (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 .cse0) .cse0)) (= ULTIMATE.start___ieee754_sqrtf_~x .cse0))) [2019-10-22 11:24:40,315 INFO L443 ceAbstractionStarter]: For program point L32(lines 32 33) no Hoare annotation was computed. [2019-10-22 11:24:40,315 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-10-22 11:24:40,315 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 96) no Hoare annotation was computed. [2019-10-22 11:24:40,315 INFO L443 ceAbstractionStarter]: For program point L66(lines 66 72) no Hoare annotation was computed. [2019-10-22 11:24:40,315 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:24:40,316 INFO L446 ceAbstractionStarter]: At program point L100(lines 84 101) the Hoare annotation is: true [2019-10-22 11:24:40,316 INFO L443 ceAbstractionStarter]: For program point L34(lines 34 35) no Hoare annotation was computed. [2019-10-22 11:24:40,316 INFO L443 ceAbstractionStarter]: For program point L76-1(lines 76 80) no Hoare annotation was computed. [2019-10-22 11:24:40,316 INFO L439 ceAbstractionStarter]: At program point L76-2(lines 76 80) the Hoare annotation is: false [2019-10-22 11:24:40,316 INFO L443 ceAbstractionStarter]: For program point L76-3(lines 76 80) no Hoare annotation was computed. [2019-10-22 11:24:40,316 INFO L443 ceAbstractionStarter]: For program point L68(lines 68 71) no Hoare annotation was computed. [2019-10-22 11:24:40,324 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,327 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,328 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,328 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,328 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,330 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,332 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,334 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,334 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,335 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,335 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,335 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,336 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,336 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,337 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,337 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,337 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,337 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,338 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,339 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,339 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,339 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,340 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,340 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,341 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,342 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:24:40 BoogieIcfgContainer [2019-10-22 11:24:40,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:24:40,345 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:24:40,345 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:24:40,345 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:24:40,345 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:35" (3/4) ... [2019-10-22 11:24:40,349 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:24:40,360 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-10-22 11:24:40,361 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 11:24:40,389 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) [2019-10-22 11:24:40,390 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && 1bv32 == \result [2019-10-22 11:24:40,419 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4b5fe7b9-360c-4117-8ac9-0606f2ae4635/bin/utaipan/witness.graphml [2019-10-22 11:24:40,419 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:24:40,421 INFO L168 Benchmark]: Toolchain (without parser) took 5822.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.7 MB). Free memory was 948.3 MB in the beginning and 1.0 GB in the end (delta: -86.2 MB). Peak memory consumption was 91.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:40,421 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:40,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.21 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 932.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:40,422 INFO L168 Benchmark]: Boogie Procedure Inliner took 120.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.7 MB). Free memory was 932.2 MB in the beginning and 1.2 GB in the end (delta: -240.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:40,422 INFO L168 Benchmark]: Boogie Preprocessor took 43.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:40,423 INFO L168 Benchmark]: RCFGBuilder took 850.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:40,423 INFO L168 Benchmark]: TraceAbstraction took 4427.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 94.3 MB). Peak memory consumption was 94.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:40,423 INFO L168 Benchmark]: Witness Printer took 74.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:40,426 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 301.21 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 932.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 120.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.7 MB). Free memory was 932.2 MB in the beginning and 1.2 GB in the end (delta: -240.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 850.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4427.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 94.3 MB). Peak memory consumption was 94.3 MB. Max. memory is 11.5 GB. * Witness Printer took 74.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 96]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant [2019-10-22 11:24:40,431 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,431 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,431 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,432 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,432 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,432 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,432 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,433 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,434 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,434 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,434 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,434 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: \result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 13]: Loop Invariant [2019-10-22 11:24:40,435 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,435 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,435 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,435 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,435 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,436 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,436 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,436 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,436 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,437 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,437 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,437 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && 1bv32 == \result - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant [2019-10-22 11:24:40,438 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-10-22 11:24:40,438 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: x == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Result: SAFE, OverallTime: 4.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 80 SDtfs, 45 SDslu, 172 SDs, 0 SdLazy, 43 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 11 NumberOfFragments, 63 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 76 ConstructedInterpolants, 2 QuantifiedInterpolants, 4169 SizeOfPredicates, 14 NumberOfNonLiveVariables, 107 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...