./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/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 fb0b06f0fabe52e4995034e0b478ee6377b6d993 ............................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/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 fb0b06f0fabe52e4995034e0b478ee6377b6d993 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:20:41,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:20:41,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:20:41,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:20:41,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:20:41,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:20:41,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:20:41,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:20:41,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:20:41,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:20:41,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:20:41,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:20:41,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:20:41,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:20:41,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:20:41,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:20:41,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:20:41,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:20:41,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:20:41,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:20:41,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:20:41,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:20:41,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:20:41,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:20:41,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:20:41,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:20:41,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:20:41,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:20:41,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:20:41,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:20:41,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:20:41,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:20:41,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:20:41,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:20:41,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:20:41,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:20:41,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:20:41,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:20:41,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:20:41,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:20:41,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:20:41,269 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:20:41,281 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:20:41,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:20:41,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:20:41,285 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:20:41,286 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:20:41,286 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:20:41,286 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:20:41,286 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:20:41,286 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:20:41,287 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:20:41,288 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:20:41,288 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:20:41,288 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:20:41,288 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:20:41,288 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:20:41,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:20:41,289 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:20:41,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:20:41,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:20:41,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:20:41,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:20:41,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:20:41,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:20:41,291 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:20:41,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:20:41,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:20:41,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:20:41,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:20:41,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:20:41,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:20:41,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:20:41,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:20:41,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:20:41,293 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:20:41,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:20:41,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:20:41,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:20:41,294 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/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/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 -> fb0b06f0fabe52e4995034e0b478ee6377b6d993 [2019-11-26 02:20:41,461 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:20:41,472 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:20:41,475 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:20:41,477 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:20:41,477 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:20:41,478 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2019-11-26 02:20:41,539 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/data/7eca5bfdc/bd62743a325547c2b8b0561f75d17d3f/FLAG6e5dfcdfc [2019-11-26 02:20:41,946 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:20:41,946 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2019-11-26 02:20:41,953 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/data/7eca5bfdc/bd62743a325547c2b8b0561f75d17d3f/FLAG6e5dfcdfc [2019-11-26 02:20:41,969 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/data/7eca5bfdc/bd62743a325547c2b8b0561f75d17d3f [2019-11-26 02:20:41,971 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:20:41,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:20:41,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:20:41,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:20:41,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:20:41,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:20:41" (1/1) ... [2019-11-26 02:20:41,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d19ea8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:41, skipping insertion in model container [2019-11-26 02:20:41,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:20:41" (1/1) ... [2019-11-26 02:20:41,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:20:42,017 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:20:42,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:20:42,284 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:20:42,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:20:42,337 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:20:42,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:42 WrapperNode [2019-11-26 02:20:42,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:20:42,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:20:42,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:20:42,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:20:42,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:42" (1/1) ... [2019-11-26 02:20:42,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:42" (1/1) ... [2019-11-26 02:20:42,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:20:42,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:20:42,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:20:42,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:20:42,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:42" (1/1) ... [2019-11-26 02:20:42,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:42" (1/1) ... [2019-11-26 02:20:42,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:42" (1/1) ... [2019-11-26 02:20:42,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:42" (1/1) ... [2019-11-26 02:20:42,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:42" (1/1) ... [2019-11-26 02:20:42,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:42" (1/1) ... [2019-11-26 02:20:42,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:42" (1/1) ... [2019-11-26 02:20:42,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:20:42,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:20:42,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:20:42,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:20:42,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/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 [2019-11-26 02:20:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:20:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-26 02:20:42,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:20:42,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-26 02:20:42,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:20:42,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:20:42,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:20:42,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:20:43,255 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:20:43,255 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-26 02:20:43,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:20:43 BoogieIcfgContainer [2019-11-26 02:20:43,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:20:43,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:20:43,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:20:43,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:20:43,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:20:41" (1/3) ... [2019-11-26 02:20:43,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e060544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:20:43, skipping insertion in model container [2019-11-26 02:20:43,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:42" (2/3) ... [2019-11-26 02:20:43,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e060544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:20:43, skipping insertion in model container [2019-11-26 02:20:43,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:20:43" (3/3) ... [2019-11-26 02:20:43,262 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2019-11-26 02:20:43,268 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:20:43,274 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:20:43,281 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:20:43,298 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:20:43,298 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:20:43,298 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:20:43,298 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:20:43,298 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:20:43,299 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:20:43,299 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:20:43,299 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:20:43,311 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-11-26 02:20:43,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:20:43,315 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:43,316 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:20:43,317 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:20:43,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:43,322 INFO L82 PathProgramCache]: Analyzing trace with hash -323894289, now seen corresponding path program 1 times [2019-11-26 02:20:43,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:20:43,329 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752946541] [2019-11-26 02:20:43,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:20:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:20:43,423 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752946541] [2019-11-26 02:20:43,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:20:43,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:20:43,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383670653] [2019-11-26 02:20:43,428 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:20:43,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:20:43,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:20:43,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:20:43,443 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-11-26 02:20:43,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:43,460 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2019-11-26 02:20:43,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:20:43,461 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-26 02:20:43,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:43,470 INFO L225 Difference]: With dead ends: 53 [2019-11-26 02:20:43,470 INFO L226 Difference]: Without dead ends: 25 [2019-11-26 02:20:43,473 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:20:43,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-26 02:20:43,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-26 02:20:43,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-26 02:20:43,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2019-11-26 02:20:43,504 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 7 [2019-11-26 02:20:43,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:43,504 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2019-11-26 02:20:43,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:20:43,504 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2019-11-26 02:20:43,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:20:43,505 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:43,505 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:20:43,505 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:20:43,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:43,506 INFO L82 PathProgramCache]: Analyzing trace with hash 572312428, now seen corresponding path program 1 times [2019-11-26 02:20:43,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:20:43,506 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505878057] [2019-11-26 02:20:43,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:20:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:20:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:20:43,609 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:20:43,610 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:20:43,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:20:43 BoogieIcfgContainer [2019-11-26 02:20:43,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:20:43,637 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:20:43,637 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:20:43,637 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:20:43,637 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:20:43" (3/4) ... [2019-11-26 02:20:43,640 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:20:43,641 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:20:43,645 INFO L168 Benchmark]: Toolchain (without parser) took 1667.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 943.4 MB in the beginning and 1.0 GB in the end (delta: -82.0 MB). Peak memory consumption was 52.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:43,645 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:20:43,646 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -180.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:43,647 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:20:43,648 INFO L168 Benchmark]: Boogie Preprocessor took 34.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:20:43,649 INFO L168 Benchmark]: RCFGBuilder took 827.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 71.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:43,650 INFO L168 Benchmark]: TraceAbstraction took 378.74 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:43,651 INFO L168 Benchmark]: Witness Printer took 4.13 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:43,654 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 362.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -180.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 55.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 827.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 71.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 378.74 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.13 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 154]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 153, overapproximation of someBinaryArithmeticDOUBLEoperation at line 33, overapproximation of bitwiseAnd at line 32. Possible FailurePath: [L17] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L149] double x = 0.0; [L20] double z; [L21] __int32_t sign = 0x80000000; [L22] __uint32_t r, t1, s1, ix1, q1; [L23] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L26] ieee_double_shape_type ew_u; [L27] ew_u.value = (x) [L28] EXPR ew_u.parts.msw [L28] (ix0) = ew_u.parts.msw [L29] EXPR ew_u.parts.lsw [L29] (ix1) = ew_u.parts.lsw [L32] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L33] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L150] double res = __ieee754_sqrt(x); [L153] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L153] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L154] __VERIFIER_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 36 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=27occurred 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 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 0.1.24-6b5699a [2019-11-26 02:20:45,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:20:45,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:20:45,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:20:45,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:20:45,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:20:45,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:20:45,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:20:45,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:20:45,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:20:45,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:20:45,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:20:45,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:20:45,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:20:45,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:20:45,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:20:45,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:20:45,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:20:45,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:20:45,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:20:45,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:20:45,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:20:45,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:20:45,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:20:45,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:20:45,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:20:45,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:20:45,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:20:45,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:20:45,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:20:45,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:20:45,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:20:45,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:20:45,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:20:45,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:20:45,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:20:45,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:20:45,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:20:45,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:20:45,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:20:45,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:20:45,478 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:20:45,492 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:20:45,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:20:45,493 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:20:45,493 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:20:45,493 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:20:45,493 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:20:45,494 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:20:45,494 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:20:45,494 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:20:45,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:20:45,495 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:20:45,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:20:45,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:20:45,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:20:45,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:20:45,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:20:45,496 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:20:45,497 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:20:45,497 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:20:45,497 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:20:45,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:20:45,498 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:20:45,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:20:45,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:20:45,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:20:45,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:20:45,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:20:45,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:20:45,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:20:45,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:20:45,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:20:45,500 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:20:45,500 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:20:45,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:20:45,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:20:45,501 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/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 -> fb0b06f0fabe52e4995034e0b478ee6377b6d993 [2019-11-26 02:20:45,821 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:20:45,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:20:45,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:20:45,838 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:20:45,838 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:20:45,839 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2019-11-26 02:20:45,895 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/data/b4a9ca337/ab7e50aa9a924158b5196b94a07e6de2/FLAGf28598c50 [2019-11-26 02:20:46,291 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:20:46,291 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2019-11-26 02:20:46,297 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/data/b4a9ca337/ab7e50aa9a924158b5196b94a07e6de2/FLAGf28598c50 [2019-11-26 02:20:46,309 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/data/b4a9ca337/ab7e50aa9a924158b5196b94a07e6de2 [2019-11-26 02:20:46,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:20:46,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:20:46,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:20:46,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:20:46,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:20:46,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:20:46" (1/1) ... [2019-11-26 02:20:46,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fd6b986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:46, skipping insertion in model container [2019-11-26 02:20:46,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:20:46" (1/1) ... [2019-11-26 02:20:46,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:20:46,350 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:20:46,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:20:46,530 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:20:46,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:20:46,695 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:20:46,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:46 WrapperNode [2019-11-26 02:20:46,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:20:46,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:20:46,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:20:46,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:20:46,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:46" (1/1) ... [2019-11-26 02:20:46,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:46" (1/1) ... [2019-11-26 02:20:46,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:20:46,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:20:46,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:20:46,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:20:46,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:46" (1/1) ... [2019-11-26 02:20:46,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:46" (1/1) ... [2019-11-26 02:20:46,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:46" (1/1) ... [2019-11-26 02:20:46,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:46" (1/1) ... [2019-11-26 02:20:46,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:46" (1/1) ... [2019-11-26 02:20:46,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:46" (1/1) ... [2019-11-26 02:20:46,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:46" (1/1) ... [2019-11-26 02:20:46,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:20:46,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:20:46,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:20:46,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:20:46,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/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 [2019-11-26 02:20:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-26 02:20:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-26 02:20:46,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:20:46,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:20:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:20:46,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:20:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:20:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:20:50,267 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:20:50,267 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-26 02:20:50,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:20:50 BoogieIcfgContainer [2019-11-26 02:20:50,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:20:50,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:20:50,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:20:50,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:20:50,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:20:46" (1/3) ... [2019-11-26 02:20:50,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48dfeecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:20:50, skipping insertion in model container [2019-11-26 02:20:50,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:46" (2/3) ... [2019-11-26 02:20:50,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48dfeecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:20:50, skipping insertion in model container [2019-11-26 02:20:50,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:20:50" (3/3) ... [2019-11-26 02:20:50,274 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2019-11-26 02:20:50,281 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:20:50,286 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:20:50,294 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:20:50,314 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:20:50,314 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:20:50,314 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:20:50,315 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:20:50,315 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:20:50,315 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:20:50,315 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:20:50,315 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:20:50,328 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2019-11-26 02:20:50,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:20:50,333 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:50,334 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:20:50,334 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:20:50,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:50,339 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2019-11-26 02:20:50,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:20:50,348 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490412182] [2019-11-26 02:20:50,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/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 [2019-11-26 02:20:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:50,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:20:50,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:20:50,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:20:50,758 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:20:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:20:50,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490412182] [2019-11-26 02:20:50,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:20:50,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:20:50,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101138959] [2019-11-26 02:20:50,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:20:50,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:20:50,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:20:50,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:20:50,779 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2019-11-26 02:20:50,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:50,797 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2019-11-26 02:20:50,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:20:50,802 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-26 02:20:50,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:50,820 INFO L225 Difference]: With dead ends: 104 [2019-11-26 02:20:50,820 INFO L226 Difference]: Without dead ends: 50 [2019-11-26 02:20:50,823 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:20:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-26 02:20:50,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-11-26 02:20:50,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-26 02:20:50,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2019-11-26 02:20:50,854 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2019-11-26 02:20:50,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:50,855 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2019-11-26 02:20:50,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:20:50,855 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2019-11-26 02:20:50,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:20:50,855 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:50,856 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:20:51,056 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 02:20:51,057 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:20:51,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:51,057 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2019-11-26 02:20:51,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:20:51,058 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213087157] [2019-11-26 02:20:51,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/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 [2019-11-26 02:20:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:51,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-26 02:20:51,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:20:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:20:51,456 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:20:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:20:51,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213087157] [2019-11-26 02:20:51,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:20:51,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:20:51,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178503905] [2019-11-26 02:20:51,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:20:51,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:20:51,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:20:51,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:20:51,507 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand 6 states. [2019-11-26 02:20:52,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:52,654 INFO L93 Difference]: Finished difference Result 105 states and 142 transitions. [2019-11-26 02:20:52,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:20:52,655 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-11-26 02:20:52,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:52,657 INFO L225 Difference]: With dead ends: 105 [2019-11-26 02:20:52,657 INFO L226 Difference]: Without dead ends: 63 [2019-11-26 02:20:52,659 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:20:52,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-26 02:20:52,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2019-11-26 02:20:52,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-26 02:20:52,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2019-11-26 02:20:52,667 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 9 [2019-11-26 02:20:52,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:52,668 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2019-11-26 02:20:52,668 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:20:52,668 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2019-11-26 02:20:52,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:20:52,669 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:52,669 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:20:52,893 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-26 02:20:52,893 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:20:52,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:52,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2019-11-26 02:20:52,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:20:52,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206775930] [2019-11-26 02:20:52,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/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 [2019-11-26 02:20:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:52,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-26 02:20:52,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:20:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:20:53,000 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:20:53,002 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:20:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:20:53,040 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206775930] [2019-11-26 02:20:53,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:20:53,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-26 02:20:53,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535030131] [2019-11-26 02:20:53,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:20:53,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:20:53,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:20:53,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:20:53,042 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand 7 states. [2019-11-26 02:20:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:53,201 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2019-11-26 02:20:53,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:20:53,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-11-26 02:20:53,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:53,205 INFO L225 Difference]: With dead ends: 63 [2019-11-26 02:20:53,206 INFO L226 Difference]: Without dead ends: 60 [2019-11-26 02:20:53,206 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:20:53,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-26 02:20:53,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2019-11-26 02:20:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-26 02:20:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2019-11-26 02:20:53,214 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 11 [2019-11-26 02:20:53,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:53,214 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2019-11-26 02:20:53,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:20:53,214 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2019-11-26 02:20:53,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-26 02:20:53,215 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:53,215 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:20:53,428 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-26 02:20:53,436 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:20:53,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:53,436 INFO L82 PathProgramCache]: Analyzing trace with hash 264903321, now seen corresponding path program 1 times [2019-11-26 02:20:53,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:20:53,437 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130079780] [2019-11-26 02:20:53,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-26 02:20:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:53,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-26 02:20:53,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:20:53,621 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:20:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:20:53,659 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:20:53,661 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:20:53,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:20:53,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130079780] [2019-11-26 02:20:53,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:20:53,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2019-11-26 02:20:53,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146404789] [2019-11-26 02:20:53,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-26 02:20:53,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:20:53,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-26 02:20:53,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-11-26 02:20:53,861 INFO L87 Difference]: Start difference. First operand 53 states and 70 transitions. Second operand 14 states. [2019-11-26 02:20:54,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:54,321 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2019-11-26 02:20:54,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-26 02:20:54,321 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2019-11-26 02:20:54,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:54,322 INFO L225 Difference]: With dead ends: 60 [2019-11-26 02:20:54,322 INFO L226 Difference]: Without dead ends: 51 [2019-11-26 02:20:54,323 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2019-11-26 02:20:54,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-26 02:20:54,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-11-26 02:20:54,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-26 02:20:54,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2019-11-26 02:20:54,329 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 15 [2019-11-26 02:20:54,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:54,329 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2019-11-26 02:20:54,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-26 02:20:54,330 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2019-11-26 02:20:54,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-26 02:20:54,331 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:54,331 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:20:54,531 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-26 02:20:54,532 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:20:54,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:54,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1807617568, now seen corresponding path program 1 times [2019-11-26 02:20:54,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:20:54,533 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810309987] [2019-11-26 02:20:54,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-26 02:20:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:54,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:20:54,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:20:54,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:20:54,673 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:20:54,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:20:54,744 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810309987] [2019-11-26 02:20:54,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:20:54,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-26 02:20:54,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591081303] [2019-11-26 02:20:54,745 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:20:54,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:20:54,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:20:54,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:20:54,746 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand 8 states. [2019-11-26 02:20:55,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:55,173 INFO L93 Difference]: Finished difference Result 87 states and 116 transitions. [2019-11-26 02:20:55,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:20:55,174 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2019-11-26 02:20:55,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:55,175 INFO L225 Difference]: With dead ends: 87 [2019-11-26 02:20:55,175 INFO L226 Difference]: Without dead ends: 52 [2019-11-26 02:20:55,176 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:20:55,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-26 02:20:55,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2019-11-26 02:20:55,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-26 02:20:55,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2019-11-26 02:20:55,182 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 27 [2019-11-26 02:20:55,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:55,182 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2019-11-26 02:20:55,182 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:20:55,182 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2019-11-26 02:20:55,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-26 02:20:55,183 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:55,184 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:20:55,393 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-26 02:20:55,394 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:20:55,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:55,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1685732611, now seen corresponding path program 1 times [2019-11-26 02:20:55,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:20:55,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276949221] [2019-11-26 02:20:55,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-26 02:20:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:55,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:20:55,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:20:55,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:20:55,511 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:20:55,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:20:55,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276949221] [2019-11-26 02:20:55,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:20:55,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 02:20:55,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296859419] [2019-11-26 02:20:55,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:20:55,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:20:55,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:20:55,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:20:55,522 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand 4 states. [2019-11-26 02:20:55,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:55,578 INFO L93 Difference]: Finished difference Result 84 states and 112 transitions. [2019-11-26 02:20:55,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:20:55,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-11-26 02:20:55,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:55,580 INFO L225 Difference]: With dead ends: 84 [2019-11-26 02:20:55,580 INFO L226 Difference]: Without dead ends: 55 [2019-11-26 02:20:55,581 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:20:55,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-26 02:20:55,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-11-26 02:20:55,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-26 02:20:55,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2019-11-26 02:20:55,586 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 32 [2019-11-26 02:20:55,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:55,587 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2019-11-26 02:20:55,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:20:55,587 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2019-11-26 02:20:55,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-26 02:20:55,588 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:55,588 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:20:55,806 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-26 02:20:55,807 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:20:55,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:55,807 INFO L82 PathProgramCache]: Analyzing trace with hash 429259843, now seen corresponding path program 1 times [2019-11-26 02:20:55,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:20:55,807 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513072651] [2019-11-26 02:20:55,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-26 02:20:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:55,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:20:55,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:20:55,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:20:55,949 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:20:55,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:20:55,978 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513072651] [2019-11-26 02:20:55,978 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708495442] [2019-11-26 02:20:55,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:20:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:56,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:20:56,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:20:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-26 02:20:56,099 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:20:56,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-26 02:20:56,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2019-11-26 02:20:56,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2019-11-26 02:20:56,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142505759] [2019-11-26 02:20:56,132 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:20:56,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:20:56,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:20:56,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:20:56,133 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand 6 states. [2019-11-26 02:20:56,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:56,234 INFO L93 Difference]: Finished difference Result 84 states and 111 transitions. [2019-11-26 02:20:56,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:20:56,235 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-11-26 02:20:56,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:56,235 INFO L225 Difference]: With dead ends: 84 [2019-11-26 02:20:56,236 INFO L226 Difference]: Without dead ends: 63 [2019-11-26 02:20:56,236 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:20:56,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-26 02:20:56,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-11-26 02:20:56,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-26 02:20:56,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2019-11-26 02:20:56,245 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 38 [2019-11-26 02:20:56,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:56,246 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2019-11-26 02:20:56,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:20:56,246 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2019-11-26 02:20:56,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-26 02:20:56,247 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:56,247 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:20:56,649 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 mathsat -unsat_core_generation=3 [2019-11-26 02:20:56,649 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:20:56,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:56,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1564040323, now seen corresponding path program 1 times [2019-11-26 02:20:56,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:20:56,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026008976] [2019-11-26 02:20:56,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2019-11-26 02:20:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:56,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:20:56,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:20:56,773 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-26 02:20:56,773 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:20:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-26 02:20:56,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026008976] [2019-11-26 02:20:56,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181292612] [2019-11-26 02:20:56,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:20:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:56,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:20:56,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:20:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-26 02:20:56,879 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:20:56,883 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-26 02:20:56,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:20:56,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 8 [2019-11-26 02:20:56,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674067384] [2019-11-26 02:20:56,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:20:56,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:20:56,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:20:56,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:20:56,886 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand 8 states. [2019-11-26 02:20:57,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:57,018 INFO L93 Difference]: Finished difference Result 112 states and 152 transitions. [2019-11-26 02:20:57,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:20:57,018 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2019-11-26 02:20:57,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:57,019 INFO L225 Difference]: With dead ends: 112 [2019-11-26 02:20:57,019 INFO L226 Difference]: Without dead ends: 75 [2019-11-26 02:20:57,020 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:20:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-11-26 02:20:57,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2019-11-26 02:20:57,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-26 02:20:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2019-11-26 02:20:57,027 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 44 [2019-11-26 02:20:57,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:57,028 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2019-11-26 02:20:57,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:20:57,028 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2019-11-26 02:20:57,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-26 02:20:57,030 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:57,030 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:20:57,443 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:20:57,445 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:20:57,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:57,445 INFO L82 PathProgramCache]: Analyzing trace with hash -229463293, now seen corresponding path program 2 times [2019-11-26 02:20:57,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:20:57,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837796789] [2019-11-26 02:20:57,446 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2019-11-26 02:20:57,568 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-26 02:20:57,568 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:20:57,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-26 02:20:57,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:20:57,628 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 56 [2019-11-26 02:20:57,638 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:20:57,640 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 58 [2019-11-26 02:20:57,641 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-26 02:20:57,671 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:57,696 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2019-11-26 02:20:57,696 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-26 02:20:57,714 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:57,721 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:57,721 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2019-11-26 02:20:57,722 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-26 02:20:57,731 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:57,732 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:20:57,745 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:57,746 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-26 02:20:57,747 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:76, output treesize:33 [2019-11-26 02:20:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-11-26 02:20:57,817 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:20:57,870 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:57,870 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 77 treesize of output 77 [2019-11-26 02:20:57,896 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:57,897 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 9 case distinctions, treesize of input 56 treesize of output 71 [2019-11-26 02:20:57,897 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-26 02:20:57,919 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:57,928 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 24 [2019-11-26 02:20:57,929 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-26 02:20:57,944 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:57,957 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:57,958 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 25 [2019-11-26 02:20:57,958 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-26 02:20:57,980 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:57,980 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:20:57,999 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:20:58,000 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-26 02:20:58,001 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:87, output treesize:33 [2019-11-26 02:20:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-11-26 02:20:58,035 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837796789] [2019-11-26 02:20:58,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:20:58,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:20:58,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39132081] [2019-11-26 02:20:58,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:20:58,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:20:58,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:20:58,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:20:58,038 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand 6 states. [2019-11-26 02:20:58,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:58,078 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2019-11-26 02:20:58,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:20:58,080 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2019-11-26 02:20:58,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:58,080 INFO L225 Difference]: With dead ends: 75 [2019-11-26 02:20:58,080 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:20:58,081 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:20:58,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:20:58,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:20:58,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:20:58,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:20:58,082 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2019-11-26 02:20:58,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:58,082 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:20:58,082 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:20:58,082 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:20:58,082 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:20:58,292 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2019-11-26 02:20:58,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:20:58,448 INFO L440 ceAbstractionStarter]: At program point L126(lines 19 127) the Hoare annotation is: (and (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x) (= |ULTIMATE.start___ieee754_sqrt_#res| (_ +zero 11 53))) [2019-11-26 02:20:58,448 INFO L444 ceAbstractionStarter]: For program point L85(lines 85 94) no Hoare annotation was computed. [2019-11-26 02:20:58,448 INFO L444 ceAbstractionStarter]: For program point L85-2(lines 85 94) no Hoare annotation was computed. [2019-11-26 02:20:58,448 INFO L444 ceAbstractionStarter]: For program point L44(lines 44 55) no Hoare annotation was computed. [2019-11-26 02:20:58,448 INFO L444 ceAbstractionStarter]: For program point L44-2(lines 44 55) no Hoare annotation was computed. [2019-11-26 02:20:58,448 INFO L444 ceAbstractionStarter]: For program point L102(lines 102 113) no Hoare annotation was computed. [2019-11-26 02:20:58,449 INFO L444 ceAbstractionStarter]: For program point L36(lines 36 41) no Hoare annotation was computed. [2019-11-26 02:20:58,449 INFO L440 ceAbstractionStarter]: At program point L69-2(lines 69 79) the Hoare annotation is: false [2019-11-26 02:20:58,449 INFO L444 ceAbstractionStarter]: For program point L36-2(lines 36 41) no Hoare annotation was computed. [2019-11-26 02:20:58,449 INFO L444 ceAbstractionStarter]: For program point L69-3(lines 69 79) no Hoare annotation was computed. [2019-11-26 02:20:58,449 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:20:58,449 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-26 02:20:58,449 INFO L440 ceAbstractionStarter]: At program point L45-2(lines 45 49) the Hoare annotation is: false [2019-11-26 02:20:58,449 INFO L444 ceAbstractionStarter]: For program point L45-3(lines 45 49) no Hoare annotation was computed. [2019-11-26 02:20:58,449 INFO L444 ceAbstractionStarter]: For program point L37(lines 37 40) no Hoare annotation was computed. [2019-11-26 02:20:58,449 INFO L444 ceAbstractionStarter]: For program point L153(line 153) no Hoare annotation was computed. [2019-11-26 02:20:58,449 INFO L444 ceAbstractionStarter]: For program point L87(lines 87 88) no Hoare annotation was computed. [2019-11-26 02:20:58,450 INFO L444 ceAbstractionStarter]: For program point L120-1(lines 120 125) no Hoare annotation was computed. [2019-11-26 02:20:58,450 INFO L444 ceAbstractionStarter]: For program point L153-2(lines 153 156) no Hoare annotation was computed. [2019-11-26 02:20:58,450 INFO L440 ceAbstractionStarter]: At program point L120-2(lines 120 125) the Hoare annotation is: false [2019-11-26 02:20:58,450 INFO L444 ceAbstractionStarter]: For program point L87-2(lines 87 88) no Hoare annotation was computed. [2019-11-26 02:20:58,450 INFO L444 ceAbstractionStarter]: For program point L120-3(lines 120 125) no Hoare annotation was computed. [2019-11-26 02:20:58,450 INFO L444 ceAbstractionStarter]: For program point L104(lines 104 112) no Hoare annotation was computed. [2019-11-26 02:20:58,450 INFO L444 ceAbstractionStarter]: For program point L71(lines 71 75) no Hoare annotation was computed. [2019-11-26 02:20:58,450 INFO L444 ceAbstractionStarter]: For program point L71-2(lines 71 75) no Hoare annotation was computed. [2019-11-26 02:20:58,450 INFO L444 ceAbstractionStarter]: For program point L154(line 154) no Hoare annotation was computed. [2019-11-26 02:20:58,450 INFO L440 ceAbstractionStarter]: At program point L138(lines 129 139) the Hoare annotation is: (and (exists ((|v_skolemized_q#valueAsBitvector_6| (_ BitVec 64))) (and (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_6|)) (_ +zero 11 53)) (= ULTIMATE.start___signbit_double_~msw~0 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_6|)))) (= |ULTIMATE.start___signbit_double_#res| (_ bv0 32)) (= (_ +zero 11 53) ULTIMATE.start___signbit_double_~x) (= ULTIMATE.start_main_~res~0 (_ +zero 11 53)) |ULTIMATE.start_main_#t~short11| (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x) (= |ULTIMATE.start___ieee754_sqrt_#res| (_ +zero 11 53))) [2019-11-26 02:20:58,450 INFO L444 ceAbstractionStarter]: For program point L39(lines 39 40) no Hoare annotation was computed. [2019-11-26 02:20:58,451 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-26 02:20:58,451 INFO L444 ceAbstractionStarter]: For program point L90(lines 90 91) no Hoare annotation was computed. [2019-11-26 02:20:58,451 INFO L444 ceAbstractionStarter]: For program point L90-2(lines 90 91) no Hoare annotation was computed. [2019-11-26 02:20:58,451 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 154) no Hoare annotation was computed. [2019-11-26 02:20:58,451 INFO L440 ceAbstractionStarter]: At program point L82-2(lines 82 98) the Hoare annotation is: false [2019-11-26 02:20:58,451 INFO L444 ceAbstractionStarter]: For program point L82-3(lines 19 127) no Hoare annotation was computed. [2019-11-26 02:20:58,451 INFO L444 ceAbstractionStarter]: For program point L107(lines 107 112) no Hoare annotation was computed. [2019-11-26 02:20:58,451 INFO L444 ceAbstractionStarter]: For program point L132-1(lines 132 136) no Hoare annotation was computed. [2019-11-26 02:20:58,451 INFO L440 ceAbstractionStarter]: At program point L132-2(lines 132 136) the Hoare annotation is: (and (= (_ +zero 11 53) ULTIMATE.start___signbit_double_~x) (= ULTIMATE.start_main_~res~0 (_ +zero 11 53)) |ULTIMATE.start_main_#t~short11| (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x) (= |ULTIMATE.start___ieee754_sqrt_#res| (_ +zero 11 53))) [2019-11-26 02:20:58,451 INFO L444 ceAbstractionStarter]: For program point L132-3(lines 132 136) no Hoare annotation was computed. [2019-11-26 02:20:58,451 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:20:58,452 INFO L444 ceAbstractionStarter]: For program point L58(lines 58 61) no Hoare annotation was computed. [2019-11-26 02:20:58,452 INFO L444 ceAbstractionStarter]: For program point L25-1(lines 25 30) no Hoare annotation was computed. [2019-11-26 02:20:58,452 INFO L444 ceAbstractionStarter]: For program point L58-2(lines 58 61) no Hoare annotation was computed. [2019-11-26 02:20:58,452 INFO L440 ceAbstractionStarter]: At program point L25-2(lines 25 30) the Hoare annotation is: (and (= (bvadd ULTIMATE.start___ieee754_sqrt_~sign~0 (_ bv2147483648 32)) (_ bv0 32)) (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x)) [2019-11-26 02:20:58,452 INFO L444 ceAbstractionStarter]: For program point L25-3(lines 19 127) no Hoare annotation was computed. [2019-11-26 02:20:58,452 INFO L444 ceAbstractionStarter]: For program point L50-2(lines 50 51) no Hoare annotation was computed. [2019-11-26 02:20:58,452 INFO L440 ceAbstractionStarter]: At program point L50-3(lines 50 51) the Hoare annotation is: false [2019-11-26 02:20:58,452 INFO L444 ceAbstractionStarter]: For program point L50-4(lines 50 51) no Hoare annotation was computed. [2019-11-26 02:20:58,452 INFO L444 ceAbstractionStarter]: For program point L108(lines 108 109) no Hoare annotation was computed. [2019-11-26 02:20:58,452 INFO L444 ceAbstractionStarter]: For program point L108-2(lines 108 109) no Hoare annotation was computed. [2019-11-26 02:20:58,453 INFO L444 ceAbstractionStarter]: For program point L100(lines 100 114) no Hoare annotation was computed. [2019-11-26 02:20:58,453 INFO L447 ceAbstractionStarter]: At program point L158(lines 141 159) the Hoare annotation is: true [2019-11-26 02:20:58,453 INFO L444 ceAbstractionStarter]: For program point L117(lines 117 118) no Hoare annotation was computed. [2019-11-26 02:20:58,453 INFO L444 ceAbstractionStarter]: For program point L117-2(lines 117 118) no Hoare annotation was computed. [2019-11-26 02:20:58,461 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-26 02:20:58,462 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-26 02:20:58,462 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-26 02:20:58,462 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-26 02:20:58,468 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-26 02:20:58,468 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-26 02:20:58,469 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-26 02:20:58,469 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-26 02:20:58,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:20:58 BoogieIcfgContainer [2019-11-26 02:20:58,474 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:20:58,474 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:20:58,474 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:20:58,474 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:20:58,475 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:20:50" (3/4) ... [2019-11-26 02:20:58,478 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:20:58,489 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-26 02:20:58,490 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:20:58,490 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:20:58,514 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ~Pluszero~LONGDOUBLE() == x && \result == ~Pluszero~LONGDOUBLE() [2019-11-26 02:20:58,515 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~Pluszero~LONGDOUBLE() == x && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && \result == ~Pluszero~LONGDOUBLE() [2019-11-26 02:20:58,516 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\exists v_skolemized_q#valueAsBitvector_6 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]) == ~Pluszero~LONGDOUBLE() && msw == v_skolemized_q#valueAsBitvector_6[63:32]) && \result == 0bv32) && ~Pluszero~LONGDOUBLE() == x) && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && \result == ~Pluszero~LONGDOUBLE() [2019-11-26 02:20:58,552 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a71fa62a-bee8-47a2-809e-43a44acdbc06/bin/utaipan/witness.graphml [2019-11-26 02:20:58,552 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:20:58,553 INFO L168 Benchmark]: Toolchain (without parser) took 12240.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.4 MB). Free memory was 961.8 MB in the beginning and 1.0 GB in the end (delta: -61.1 MB). Peak memory consumption was 131.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:58,554 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:20:58,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 961.8 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:58,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:20:58,555 INFO L168 Benchmark]: Boogie Preprocessor took 42.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:20:58,555 INFO L168 Benchmark]: RCFGBuilder took 3456.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:58,555 INFO L168 Benchmark]: TraceAbstraction took 8204.95 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 55.1 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 57.2 MB). Peak memory consumption was 112.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:58,556 INFO L168 Benchmark]: Witness Printer took 78.16 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:58,558 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 383.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 961.8 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 71.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 3456.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8204.95 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 55.1 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 57.2 MB). Peak memory consumption was 112.2 MB. Max. memory is 11.5 GB. * Witness Printer took 78.16 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 154]: 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: 50]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 129]: Loop Invariant [2019-11-26 02:20:58,564 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-26 02:20:58,564 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-26 02:20:58,564 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-26 02:20:58,565 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-26 02:20:58,565 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-26 02:20:58,565 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-26 02:20:58,566 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-26 02:20:58,566 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] Derived loop invariant: ((((((\exists v_skolemized_q#valueAsBitvector_6 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]) == ~Pluszero~LONGDOUBLE() && msw == v_skolemized_q#valueAsBitvector_6[63:32]) && \result == 0bv32) && ~Pluszero~LONGDOUBLE() == x) && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && \result == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 82]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 120]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ~bvadd64(sign, 2147483648bv32) == 0bv32 && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: (((~Pluszero~LONGDOUBLE() == x && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && \result == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 69]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ~Pluszero~LONGDOUBLE() == x && \result == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Result: SAFE, OverallTime: 8.1s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 480 SDtfs, 607 SDslu, 1240 SDs, 0 SdLazy, 308 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 638 GetRequests, 570 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=8, 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, 9 MinimizatonAttempts, 20 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 68 HoareAnnotationTreeSize, 10 FomulaSimplifications, 143 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 322 NumberOfCodeBlocks, 297 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 622 ConstructedInterpolants, 26 QuantifiedInterpolants, 56186 SizeOfPredicates, 40 NumberOfNonLiveVariables, 818 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 22 InterpolantComputations, 16 PerfectInterpolantSequences, 154/184 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...