./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.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_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/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 cd0c8f7b91fa815011541d5ffb41102d34132ba8 ........................................................................................................................................................................................................................................................................................ 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_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/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 cd0c8f7b91fa815011541d5ffb41102d34132ba8 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:29:35,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:29:35,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:29:35,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:29:35,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:29:35,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:29:35,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:29:35,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:29:35,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:29:35,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:29:35,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:29:35,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:29:35,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:29:35,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:29:35,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:29:35,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:29:35,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:29:35,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:29:35,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:29:35,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:29:35,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:29:35,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:29:36,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:29:36,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:29:36,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:29:36,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:29:36,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:29:36,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:29:36,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:29:36,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:29:36,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:29:36,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:29:36,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:29:36,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:29:36,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:29:36,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:29:36,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:29:36,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:29:36,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:29:36,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:29:36,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:29:36,013 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:29:36,039 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:29:36,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:29:36,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:29:36,050 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:29:36,050 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:29:36,050 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:29:36,050 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:29:36,050 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:29:36,051 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:29:36,051 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:29:36,051 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:29:36,051 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:29:36,052 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:29:36,052 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:29:36,052 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:29:36,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:29:36,054 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:29:36,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:29:36,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:29:36,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:29:36,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:29:36,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:29:36,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:29:36,056 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:29:36,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:29:36,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:29:36,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:29:36,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:29:36,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:29:36,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:29:36,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:29:36,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:29:36,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:29:36,059 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:29:36,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:29:36,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:29:36,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:29:36,061 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_f31eeb52-69e4-4c5c-8add-af2befc022a4/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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2019-11-26 02:29:36,232 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:29:36,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:29:36,246 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:29:36,247 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:29:36,247 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:29:36,248 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2019-11-26 02:29:36,314 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/data/c498e6ebc/bb26a2a6755e4441949d233717d874a7/FLAGac2aeee1c [2019-11-26 02:29:36,684 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:29:36,684 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2019-11-26 02:29:36,689 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/data/c498e6ebc/bb26a2a6755e4441949d233717d874a7/FLAGac2aeee1c [2019-11-26 02:29:37,078 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/data/c498e6ebc/bb26a2a6755e4441949d233717d874a7 [2019-11-26 02:29:37,080 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:29:37,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:29:37,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:29:37,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:29:37,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:29:37,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:29:37" (1/1) ... [2019-11-26 02:29:37,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a2d7d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:37, skipping insertion in model container [2019-11-26 02:29:37,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:29:37" (1/1) ... [2019-11-26 02:29:37,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:29:37,111 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:29:37,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:29:37,258 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:29:37,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:29:37,365 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:29:37,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:37 WrapperNode [2019-11-26 02:29:37,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:29:37,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:29:37,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:29:37,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:29:37,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:37" (1/1) ... [2019-11-26 02:29:37,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:37" (1/1) ... [2019-11-26 02:29:37,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:29:37,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:29:37,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:29:37,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:29:37,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:37" (1/1) ... [2019-11-26 02:29:37,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:37" (1/1) ... [2019-11-26 02:29:37,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:37" (1/1) ... [2019-11-26 02:29:37,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:37" (1/1) ... [2019-11-26 02:29:37,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:37" (1/1) ... [2019-11-26 02:29:37,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:37" (1/1) ... [2019-11-26 02:29:37,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:37" (1/1) ... [2019-11-26 02:29:37,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:29:37,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:29:37,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:29:37,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:29:37,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/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 02:29:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:29:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-26 02:29:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:29:37,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:29:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:29:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:29:38,104 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:29:38,104 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-26 02:29:38,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:29:38 BoogieIcfgContainer [2019-11-26 02:29:38,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:29:38,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:29:38,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:29:38,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:29:38,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:29:37" (1/3) ... [2019-11-26 02:29:38,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bce6ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:29:38, skipping insertion in model container [2019-11-26 02:29:38,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:37" (2/3) ... [2019-11-26 02:29:38,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bce6ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:29:38, skipping insertion in model container [2019-11-26 02:29:38,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:29:38" (3/3) ... [2019-11-26 02:29:38,114 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2019-11-26 02:29:38,122 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:29:38,129 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:29:38,136 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:29:38,158 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:29:38,158 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:29:38,158 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:29:38,159 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:29:38,159 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:29:38,159 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:29:38,159 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:29:38,159 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:29:38,172 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-26 02:29:38,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:29:38,178 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:29:38,178 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:29:38,179 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:29:38,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:29:38,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1118298700, now seen corresponding path program 1 times [2019-11-26 02:29:38,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:29:38,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824283619] [2019-11-26 02:29:38,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:29:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:29:38,301 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 02:29:38,301 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824283619] [2019-11-26 02:29:38,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:29:38,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:29:38,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447714246] [2019-11-26 02:29:38,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:29:38,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:29:38,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:29:38,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:29:38,322 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-11-26 02:29:38,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:29:38,339 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2019-11-26 02:29:38,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:29:38,340 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-26 02:29:38,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:29:38,349 INFO L225 Difference]: With dead ends: 35 [2019-11-26 02:29:38,350 INFO L226 Difference]: Without dead ends: 16 [2019-11-26 02:29:38,354 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 02:29:38,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-26 02:29:38,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-26 02:29:38,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-26 02:29:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-11-26 02:29:38,390 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2019-11-26 02:29:38,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:29:38,390 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-11-26 02:29:38,390 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:29:38,391 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-11-26 02:29:38,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:29:38,391 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:29:38,392 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:29:38,392 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:29:38,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:29:38,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1848345075, now seen corresponding path program 1 times [2019-11-26 02:29:38,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:29:38,393 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688584732] [2019-11-26 02:29:38,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:29:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:29:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:29:38,537 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:29:38,537 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:29:38,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:29:38 BoogieIcfgContainer [2019-11-26 02:29:38,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:29:38,571 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:29:38,571 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:29:38,571 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:29:38,572 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:29:38" (3/4) ... [2019-11-26 02:29:38,575 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:29:38,575 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:29:38,577 INFO L168 Benchmark]: Toolchain (without parser) took 1494.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -120.9 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:29:38,577 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:29:38,578 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -188.2 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:29:38,579 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.92 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 02:29:38,579 INFO L168 Benchmark]: Boogie Preprocessor took 29.25 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 02:29:38,580 INFO L168 Benchmark]: RCFGBuilder took 666.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:29:38,580 INFO L168 Benchmark]: TraceAbstraction took 463.11 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:29:38,581 INFO L168 Benchmark]: Witness Printer took 4.07 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 02:29:38,583 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 283.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -188.2 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.92 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 29.25 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 666.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 463.11 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.07 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 65. Possible FailurePath: [L64] float x = 0.0f; [L65] float y = -0.0f; [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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 02:29:40,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:29:40,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:29:40,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:29:40,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:29:40,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:29:40,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:29:40,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:29:40,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:29:40,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:29:40,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:29:40,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:29:40,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:29:40,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:29:40,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:29:40,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:29:40,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:29:40,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:29:40,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:29:40,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:29:40,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:29:40,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:29:40,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:29:40,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:29:40,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:29:40,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:29:40,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:29:40,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:29:40,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:29:40,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:29:40,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:29:40,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:29:40,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:29:40,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:29:40,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:29:40,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:29:40,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:29:40,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:29:40,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:29:40,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:29:40,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:29:40,388 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:29:40,402 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:29:40,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:29:40,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:29:40,404 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:29:40,404 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:29:40,404 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:29:40,404 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:29:40,405 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:29:40,405 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:29:40,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:29:40,406 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:29:40,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:29:40,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:29:40,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:29:40,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:29:40,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:29:40,407 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:29:40,408 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:29:40,408 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:29:40,408 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:29:40,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:29:40,409 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:29:40,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:29:40,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:29:40,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:29:40,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:29:40,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:29:40,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:29:40,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:29:40,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:29:40,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:29:40,411 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:29:40,411 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:29:40,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:29:40,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:29:40,412 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_f31eeb52-69e4-4c5c-8add-af2befc022a4/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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2019-11-26 02:29:40,727 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:29:40,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:29:40,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:29:40,742 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:29:40,742 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:29:40,743 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2019-11-26 02:29:40,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/data/1ee5f64fe/7ea8f3ebf60140b5874a03ea934c6b83/FLAGc8c4129a3 [2019-11-26 02:29:41,186 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:29:41,186 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2019-11-26 02:29:41,192 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/data/1ee5f64fe/7ea8f3ebf60140b5874a03ea934c6b83/FLAGc8c4129a3 [2019-11-26 02:29:41,205 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/data/1ee5f64fe/7ea8f3ebf60140b5874a03ea934c6b83 [2019-11-26 02:29:41,207 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:29:41,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:29:41,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:29:41,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:29:41,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:29:41,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:29:41" (1/1) ... [2019-11-26 02:29:41,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ff811d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:41, skipping insertion in model container [2019-11-26 02:29:41,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:29:41" (1/1) ... [2019-11-26 02:29:41,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:29:41,261 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:29:41,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:29:41,465 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:29:41,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:29:41,541 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:29:41,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:41 WrapperNode [2019-11-26 02:29:41,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:29:41,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:29:41,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:29:41,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:29:41,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:41" (1/1) ... [2019-11-26 02:29:41,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:41" (1/1) ... [2019-11-26 02:29:41,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:29:41,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:29:41,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:29:41,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:29:41,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:41" (1/1) ... [2019-11-26 02:29:41,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:41" (1/1) ... [2019-11-26 02:29:41,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:41" (1/1) ... [2019-11-26 02:29:41,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:41" (1/1) ... [2019-11-26 02:29:41,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:41" (1/1) ... [2019-11-26 02:29:41,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:41" (1/1) ... [2019-11-26 02:29:41,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:41" (1/1) ... [2019-11-26 02:29:41,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:29:41,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:29:41,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:29:41,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:29:41,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/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 02:29:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:29:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:29:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:29:41,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:29:41,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-26 02:29:41,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:29:42,209 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:29:42,209 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-26 02:29:42,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:29:42 BoogieIcfgContainer [2019-11-26 02:29:42,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:29:42,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:29:42,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:29:42,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:29:42,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:29:41" (1/3) ... [2019-11-26 02:29:42,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7f54dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:29:42, skipping insertion in model container [2019-11-26 02:29:42,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:29:41" (2/3) ... [2019-11-26 02:29:42,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7f54dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:29:42, skipping insertion in model container [2019-11-26 02:29:42,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:29:42" (3/3) ... [2019-11-26 02:29:42,217 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2019-11-26 02:29:42,226 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:29:42,232 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:29:42,242 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:29:42,264 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:29:42,264 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:29:42,264 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:29:42,264 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:29:42,264 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:29:42,264 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:29:42,265 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:29:42,265 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:29:42,278 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-26 02:29:42,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:29:42,284 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:29:42,285 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:29:42,286 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:29:42,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:29:42,291 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-26 02:29:42,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:29:42,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161815878] [2019-11-26 02:29:42,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/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 02:29:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:29:42,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:29:42,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:29:42,435 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 02:29:42,436 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:29:42,439 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 02:29:42,440 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161815878] [2019-11-26 02:29:42,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:29:42,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:29:42,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873247693] [2019-11-26 02:29:42,446 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:29:42,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:29:42,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:29:42,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:29:42,461 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-26 02:29:42,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:29:42,479 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-26 02:29:42,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:29:42,481 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-26 02:29:42,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:29:42,491 INFO L225 Difference]: With dead ends: 62 [2019-11-26 02:29:42,491 INFO L226 Difference]: Without dead ends: 29 [2019-11-26 02:29:42,494 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:29:42,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-26 02:29:42,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-26 02:29:42,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-26 02:29:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-26 02:29:42,527 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-26 02:29:42,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:29:42,528 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-26 02:29:42,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:29:42,528 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-26 02:29:42,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:29:42,529 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:29:42,529 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:29:42,742 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 02:29:42,742 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:29:42,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:29:42,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-26 02:29:42,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:29:42,743 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584357844] [2019-11-26 02:29:42,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/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 02:29:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:29:42,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:29:42,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:29:42,859 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 02:29:42,859 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:29:42,878 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 02:29:42,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584357844] [2019-11-26 02:29:42,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:29:42,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:29:42,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059048952] [2019-11-26 02:29:42,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:29:42,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:29:42,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:29:42,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:29:42,881 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-26 02:29:43,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:29:43,058 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-26 02:29:43,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:29:43,059 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-26 02:29:43,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:29:43,060 INFO L225 Difference]: With dead ends: 68 [2019-11-26 02:29:43,060 INFO L226 Difference]: Without dead ends: 59 [2019-11-26 02:29:43,061 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:29:43,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-26 02:29:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-26 02:29:43,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-26 02:29:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-26 02:29:43,068 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-26 02:29:43,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:29:43,069 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-26 02:29:43,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:29:43,069 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-26 02:29:43,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-26 02:29:43,070 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:29:43,070 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:29:43,278 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-26 02:29:43,279 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:29:43,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:29:43,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-26 02:29:43,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:29:43,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513250395] [2019-11-26 02:29:43,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/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 02:29:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:29:43,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:29:43,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:29:43,397 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 02:29:43,397 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:29:43,422 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 02:29:43,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513250395] [2019-11-26 02:29:43,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:29:43,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-26 02:29:43,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607811121] [2019-11-26 02:29:43,423 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:29:43,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:29:43,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:29:43,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:29:43,424 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-26 02:29:43,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:29:43,486 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-26 02:29:43,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:29:43,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-26 02:29:43,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:29:43,488 INFO L225 Difference]: With dead ends: 52 [2019-11-26 02:29:43,488 INFO L226 Difference]: Without dead ends: 26 [2019-11-26 02:29:43,488 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:29:43,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-26 02:29:43,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-26 02:29:43,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-26 02:29:43,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-26 02:29:43,493 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2019-11-26 02:29:43,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:29:43,493 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-26 02:29:43,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:29:43,493 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-26 02:29:43,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-26 02:29:43,495 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:29:43,495 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:29:43,706 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-26 02:29:43,706 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:29:43,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:29:43,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-26 02:29:43,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:29:43,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088459424] [2019-11-26 02:29:43,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/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 02:29:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:29:43,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:29:43,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:29:43,801 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 02:29:43,801 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:29:43,821 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 02:29:43,821 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088459424] [2019-11-26 02:29:43,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:29:43,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:29:43,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452816643] [2019-11-26 02:29:43,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:29:43,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:29:43,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:29:43,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:29:43,823 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2019-11-26 02:29:43,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:29:43,911 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-11-26 02:29:43,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:29:43,915 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-26 02:29:43,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:29:43,916 INFO L225 Difference]: With dead ends: 61 [2019-11-26 02:29:43,916 INFO L226 Difference]: Without dead ends: 52 [2019-11-26 02:29:43,917 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:29:43,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-26 02:29:43,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2019-11-26 02:29:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-26 02:29:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-11-26 02:29:43,925 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-11-26 02:29:43,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:29:43,926 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-26 02:29:43,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:29:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-11-26 02:29:43,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-26 02:29:43,928 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:29:43,928 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:29:44,140 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-26 02:29:44,141 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:29:44,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:29:44,141 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-26 02:29:44,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:29:44,142 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277145246] [2019-11-26 02:29:44,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/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 02:29:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:29:44,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-26 02:29:44,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:29:44,227 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 02:29:44,227 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:29:44,247 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 02:29:44,247 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277145246] [2019-11-26 02:29:44,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:29:44,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 02:29:44,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270045878] [2019-11-26 02:29:44,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:29:44,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:29:44,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:29:44,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:29:44,249 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2019-11-26 02:29:44,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:29:44,260 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-26 02:29:44,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:29:44,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-26 02:29:44,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:29:44,262 INFO L225 Difference]: With dead ends: 38 [2019-11-26 02:29:44,262 INFO L226 Difference]: Without dead ends: 28 [2019-11-26 02:29:44,262 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 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 02:29:44,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-26 02:29:44,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-26 02:29:44,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-26 02:29:44,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-26 02:29:44,267 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-11-26 02:29:44,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:29:44,268 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-26 02:29:44,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:29:44,268 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-26 02:29:44,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-26 02:29:44,269 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:29:44,269 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:29:44,487 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-26 02:29:44,488 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:29:44,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:29:44,488 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-26 02:29:44,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:29:44,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346873807] [2019-11-26 02:29:44,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/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 02:29:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:29:44,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:29:44,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:29:44,612 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 02:29:44,613 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:29:44,614 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:29:44,668 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 02:29:44,668 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346873807] [2019-11-26 02:29:44,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:29:44,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-26 02:29:44,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886004674] [2019-11-26 02:29:44,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:29:44,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:29:44,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:29:44,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:29:44,670 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2019-11-26 02:29:44,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:29:44,789 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-26 02:29:44,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:29:44,790 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-26 02:29:44,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:29:44,790 INFO L225 Difference]: With dead ends: 40 [2019-11-26 02:29:44,791 INFO L226 Difference]: Without dead ends: 37 [2019-11-26 02:29:44,791 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:29:44,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-26 02:29:44,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-11-26 02:29:44,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-26 02:29:44,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-26 02:29:44,796 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2019-11-26 02:29:44,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:29:44,796 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-26 02:29:44,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:29:44,797 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-26 02:29:44,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-26 02:29:44,797 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:29:44,797 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:29:45,006 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-26 02:29:45,010 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:29:45,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:29:45,010 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-26 02:29:45,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:29:45,011 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258545690] [2019-11-26 02:29:45,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/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 02:29:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:29:45,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:29:45,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:29:45,107 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 02:29:45,107 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:29:45,132 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 02:29:45,132 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258545690] [2019-11-26 02:29:45,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:29:45,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-26 02:29:45,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061904113] [2019-11-26 02:29:45,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:29:45,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:29:45,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:29:45,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:29:45,134 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-11-26 02:29:45,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:29:45,202 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-11-26 02:29:45,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:29:45,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-26 02:29:45,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:29:45,204 INFO L225 Difference]: With dead ends: 43 [2019-11-26 02:29:45,204 INFO L226 Difference]: Without dead ends: 23 [2019-11-26 02:29:45,205 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:29:45,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-26 02:29:45,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-26 02:29:45,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-26 02:29:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-11-26 02:29:45,209 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2019-11-26 02:29:45,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:29:45,209 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-11-26 02:29:45,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:29:45,210 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-11-26 02:29:45,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-26 02:29:45,210 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:29:45,211 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] [2019-11-26 02:29:45,422 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-26 02:29:45,423 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:29:45,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:29:45,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-26 02:29:45,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:29:45,424 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168670017] [2019-11-26 02:29:45,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-26 02:29:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:29:45,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-26 02:29:45,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:29:45,575 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:29:45,614 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 02:29:45,615 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:29:45,616 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:29:45,888 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 02:29:45,889 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168670017] [2019-11-26 02:29:45,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:29:45,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2019-11-26 02:29:45,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833674572] [2019-11-26 02:29:45,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-26 02:29:45,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:29:45,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-26 02:29:45,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-11-26 02:29:45,891 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 16 states. [2019-11-26 02:29:46,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:29:46,139 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2019-11-26 02:29:46,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-26 02:29:46,140 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2019-11-26 02:29:46,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:29:46,141 INFO L225 Difference]: With dead ends: 23 [2019-11-26 02:29:46,141 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:29:46,141 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2019-11-26 02:29:46,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:29:46,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:29:46,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:29:46,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:29:46,142 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-11-26 02:29:46,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:29:46,142 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:29:46,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-26 02:29:46,143 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:29:46,143 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:29:46,343 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-26 02:29:46,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:29:46,617 INFO L444 ceAbstractionStarter]: For program point L69(line 69) no Hoare annotation was computed. [2019-11-26 02:29:46,617 INFO L444 ceAbstractionStarter]: For program point L36(lines 36 37) no Hoare annotation was computed. [2019-11-26 02:29:46,617 INFO L444 ceAbstractionStarter]: For program point L69-2(lines 69 72) no Hoare annotation was computed. [2019-11-26 02:29:46,617 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:29:46,617 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-26 02:29:46,618 INFO L440 ceAbstractionStarter]: At program point L53(lines 44 54) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_main_~res~0 .cse0) |ULTIMATE.start_main_#t~short9| (= |ULTIMATE.start_fmin_float_#res| .cse0) (= (_ bv0 32) (bvadd |ULTIMATE.start___signbit_float_#res| (_ bv4294967295 32))) (= (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1)) .cse0) (= ULTIMATE.start___signbit_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-11-26 02:29:46,618 INFO L444 ceAbstractionStarter]: For program point L70(line 70) no Hoare annotation was computed. [2019-11-26 02:29:46,618 INFO L444 ceAbstractionStarter]: For program point L29(lines 29 32) no Hoare annotation was computed. [2019-11-26 02:29:46,618 INFO L444 ceAbstractionStarter]: For program point L29-1(lines 29 32) no Hoare annotation was computed. [2019-11-26 02:29:46,618 INFO L444 ceAbstractionStarter]: For program point L38(lines 38 39) no Hoare annotation was computed. [2019-11-26 02:29:46,618 INFO L444 ceAbstractionStarter]: For program point L47-1(lines 47 51) no Hoare annotation was computed. [2019-11-26 02:29:46,618 INFO L440 ceAbstractionStarter]: At program point L47-2(lines 47 51) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_main_~res~0 .cse0) |ULTIMATE.start_main_#t~short9| (= |ULTIMATE.start_fmin_float_#res| .cse0) (= ULTIMATE.start___signbit_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-11-26 02:29:46,619 INFO L444 ceAbstractionStarter]: For program point L47-3(lines 47 51) no Hoare annotation was computed. [2019-11-26 02:29:46,619 INFO L444 ceAbstractionStarter]: For program point L23(lines 23 32) no Hoare annotation was computed. [2019-11-26 02:29:46,619 INFO L444 ceAbstractionStarter]: For program point L23-1(lines 23 32) no Hoare annotation was computed. [2019-11-26 02:29:46,619 INFO L444 ceAbstractionStarter]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2019-11-26 02:29:46,619 INFO L440 ceAbstractionStarter]: At program point L15-2(lines 15 19) the Hoare annotation is: (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24)))) [2019-11-26 02:29:46,619 INFO L444 ceAbstractionStarter]: For program point L15-3(lines 12 33) no Hoare annotation was computed. [2019-11-26 02:29:46,619 INFO L444 ceAbstractionStarter]: For program point L15-5(lines 15 19) no Hoare annotation was computed. [2019-11-26 02:29:46,620 INFO L440 ceAbstractionStarter]: At program point L15-6(lines 15 19) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-11-26 02:29:46,620 INFO L444 ceAbstractionStarter]: For program point L15-7(lines 12 33) no Hoare annotation was computed. [2019-11-26 02:29:46,620 INFO L440 ceAbstractionStarter]: At program point L32(lines 12 33) the Hoare annotation is: (and (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|) (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24)))) [2019-11-26 02:29:46,620 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-26 02:29:46,620 INFO L440 ceAbstractionStarter]: At program point L32-1(lines 12 33) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-11-26 02:29:46,620 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2019-11-26 02:29:46,621 INFO L447 ceAbstractionStarter]: At program point L74(lines 56 75) the Hoare annotation is: true [2019-11-26 02:29:46,621 INFO L444 ceAbstractionStarter]: For program point L41(line 41) no Hoare annotation was computed. [2019-11-26 02:29:46,621 INFO L444 ceAbstractionStarter]: For program point L41-2(line 41) no Hoare annotation was computed. [2019-11-26 02:29:46,621 INFO L440 ceAbstractionStarter]: At program point L41-3(lines 35 42) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= |ULTIMATE.start_fmin_float_#res| .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-11-26 02:29:46,621 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:29:46,621 INFO L444 ceAbstractionStarter]: For program point L26(lines 26 32) no Hoare annotation was computed. [2019-11-26 02:29:46,621 INFO L444 ceAbstractionStarter]: For program point L26-1(lines 26 32) no Hoare annotation was computed. [2019-11-26 02:29:46,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:29:46 BoogieIcfgContainer [2019-11-26 02:29:46,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:29:46,658 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:29:46,658 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:29:46,659 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:29:46,659 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:29:42" (3/4) ... [2019-11-26 02:29:46,667 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:29:46,689 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2019-11-26 02:29:46,690 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-26 02:29:46,690 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:29:46,713 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && 2bv32 == \result) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-11-26 02:29:46,713 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-11-26 02:29:46,714 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-11-26 02:29:46,714 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && !(0bv32 == \result)) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-11-26 02:29:46,714 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && 0bv32 == ~bvadd64(\result, 4294967295bv32)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-11-26 02:29:46,762 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f31eeb52-69e4-4c5c-8add-af2befc022a4/bin/utaipan/witness.graphml [2019-11-26 02:29:46,763 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:29:46,764 INFO L168 Benchmark]: Toolchain (without parser) took 5556.10 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 248.5 MB). Free memory was 961.8 MB in the beginning and 1.2 GB in the end (delta: -276.9 MB). Peak memory consumption was 268.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:29:46,765 INFO L168 Benchmark]: CDTParser took 0.25 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 02:29:46,765 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.47 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:29:46,766 INFO L168 Benchmark]: Boogie Procedure Inliner took 127.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.2 MB). Free memory was 951.1 MB in the beginning and 1.2 GB in the end (delta: -250.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:29:46,766 INFO L168 Benchmark]: Boogie Preprocessor took 51.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:29:46,766 INFO L168 Benchmark]: RCFGBuilder took 487.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:29:46,767 INFO L168 Benchmark]: TraceAbstraction took 4446.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 914.4 MB in the end (delta: 262.3 MB). Peak memory consumption was 262.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:29:46,767 INFO L168 Benchmark]: Witness Printer took 104.50 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 38.3 MB). Free memory was 914.4 MB in the beginning and 1.2 GB in the end (delta: -324.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:29:46,769 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 328.47 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 127.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.2 MB). Free memory was 951.1 MB in the beginning and 1.2 GB in the end (delta: -250.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 487.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4446.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 914.4 MB in the end (delta: 262.3 MB). Peak memory consumption was 262.3 MB. Max. memory is 11.5 GB. * Witness Printer took 104.50 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 38.3 MB). Free memory was 914.4 MB in the beginning and 1.2 GB in the end (delta: -324.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: 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: 12]: Loop Invariant Derived loop invariant: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && !(0bv32 == \result)) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && 0bv32 == ~bvadd64(\result, 4294967295bv32)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: (((~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && 2bv32 == \result) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == x) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: SAFE, OverallTime: 4.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 234 SDtfs, 215 SDslu, 432 SDs, 0 SdLazy, 153 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 197 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 184 HoareAnnotationTreeSize, 8 FomulaSimplifications, 48 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 15 QuantifiedInterpolants, 16152 SizeOfPredicates, 38 NumberOfNonLiveVariables, 399 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...