./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8571d6e044ba86c3b82c24f6ff451bf497f2aedf .................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8571d6e044ba86c3b82c24f6ff451bf497f2aedf ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 02:08:32,350 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 02:08:32,351 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 02:08:32,356 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 02:08:32,357 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 02:08:32,357 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 02:08:32,358 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 02:08:32,358 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 02:08:32,359 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 02:08:32,360 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 02:08:32,360 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 02:08:32,360 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 02:08:32,361 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 02:08:32,361 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 02:08:32,362 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 02:08:32,362 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 02:08:32,362 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 02:08:32,363 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 02:08:32,364 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 02:08:32,365 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 02:08:32,365 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 02:08:32,366 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 02:08:32,367 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 02:08:32,367 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 02:08:32,367 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 02:08:32,368 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 02:08:32,368 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 02:08:32,368 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 02:08:32,369 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 02:08:32,369 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 02:08:32,369 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 02:08:32,370 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 02:08:32,370 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 02:08:32,370 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 02:08:32,370 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 02:08:32,371 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 02:08:32,371 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 02:08:32,378 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 02:08:32,378 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 02:08:32,378 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 02:08:32,378 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 02:08:32,378 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 02:08:32,379 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 02:08:32,379 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 02:08:32,379 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 02:08:32,379 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 02:08:32,379 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 02:08:32,379 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 02:08:32,379 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 02:08:32,380 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 02:08:32,380 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 02:08:32,380 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 02:08:32,380 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 02:08:32,380 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 02:08:32,380 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 02:08:32,381 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 02:08:32,381 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 02:08:32,381 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 02:08:32,381 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 02:08:32,381 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 02:08:32,381 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 02:08:32,381 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 02:08:32,381 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 02:08:32,382 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 02:08:32,382 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 02:08:32,382 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 02:08:32,382 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 02:08:32,382 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 02:08:32,382 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 02:08:32,382 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 02:08:32,382 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 02:08:32,383 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 02:08:32,383 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 02:08:32,383 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8571d6e044ba86c3b82c24f6ff451bf497f2aedf [2018-12-09 02:08:32,400 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 02:08:32,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 02:08:32,409 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 02:08:32,410 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 02:08:32,410 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 02:08:32,410 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i [2018-12-09 02:08:32,448 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/data/1f7b3524f/97f1af4e1e4d4eed82e11dbb52c22ea6/FLAG5e036c9b9 [2018-12-09 02:08:32,840 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 02:08:32,840 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i [2018-12-09 02:08:32,843 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/data/1f7b3524f/97f1af4e1e4d4eed82e11dbb52c22ea6/FLAG5e036c9b9 [2018-12-09 02:08:32,851 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/data/1f7b3524f/97f1af4e1e4d4eed82e11dbb52c22ea6 [2018-12-09 02:08:32,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 02:08:32,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 02:08:32,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 02:08:32,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 02:08:32,856 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 02:08:32,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:08:32" (1/1) ... [2018-12-09 02:08:32,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42aa496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:32, skipping insertion in model container [2018-12-09 02:08:32,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:08:32" (1/1) ... [2018-12-09 02:08:32,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 02:08:32,871 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 02:08:32,952 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 02:08:32,955 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 02:08:32,963 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 02:08:32,971 INFO L195 MainTranslator]: Completed translation [2018-12-09 02:08:32,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:32 WrapperNode [2018-12-09 02:08:32,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 02:08:32,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 02:08:32,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 02:08:32,972 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 02:08:32,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:32" (1/1) ... [2018-12-09 02:08:32,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:32" (1/1) ... [2018-12-09 02:08:32,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 02:08:32,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 02:08:32,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 02:08:32,983 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 02:08:32,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:32" (1/1) ... [2018-12-09 02:08:32,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:32" (1/1) ... [2018-12-09 02:08:32,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:32" (1/1) ... [2018-12-09 02:08:32,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:32" (1/1) ... [2018-12-09 02:08:32,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:32" (1/1) ... [2018-12-09 02:08:33,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:32" (1/1) ... [2018-12-09 02:08:33,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:32" (1/1) ... [2018-12-09 02:08:33,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 02:08:33,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 02:08:33,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 02:08:33,024 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 02:08:33,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 02:08:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 02:08:33,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 02:08:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 02:08:33,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 02:08:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 02:08:33,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 02:08:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 02:08:33,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 02:08:33,140 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 02:08:33,140 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 02:08:33,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:08:33 BoogieIcfgContainer [2018-12-09 02:08:33,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 02:08:33,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 02:08:33,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 02:08:33,143 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 02:08:33,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:08:32" (1/3) ... [2018-12-09 02:08:33,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21abc27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:08:33, skipping insertion in model container [2018-12-09 02:08:33,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:32" (2/3) ... [2018-12-09 02:08:33,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21abc27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:08:33, skipping insertion in model container [2018-12-09 02:08:33,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:08:33" (3/3) ... [2018-12-09 02:08:33,144 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_true-unreach-call.i [2018-12-09 02:08:33,150 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 02:08:33,155 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 02:08:33,164 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 02:08:33,182 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 02:08:33,182 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 02:08:33,182 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 02:08:33,183 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 02:08:33,183 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 02:08:33,183 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 02:08:33,183 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 02:08:33,183 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 02:08:33,193 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-09 02:08:33,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 02:08:33,196 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:08:33,197 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 02:08:33,198 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:08:33,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:08:33,201 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-12-09 02:08:33,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 02:08:33,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 02:08:33,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:08:33,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 02:08:33,230 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 02:08:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 02:08:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 02:08:33,265 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 02:08:33,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:08:33 BoogieIcfgContainer [2018-12-09 02:08:33,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 02:08:33,279 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 02:08:33,279 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 02:08:33,279 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 02:08:33,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:08:33" (3/4) ... [2018-12-09 02:08:33,282 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 02:08:33,282 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 02:08:33,282 INFO L168 Benchmark]: Toolchain (without parser) took 429.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 948.6 MB in the beginning and 1.1 GB in the end (delta: -168.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 02:08:33,283 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 02:08:33,284 INFO L168 Benchmark]: CACSL2BoogieTranslator took 117.08 ms. Allocated memory is still 1.0 GB. Free memory was 948.6 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 02:08:33,284 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.48 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 02:08:33,284 INFO L168 Benchmark]: Boogie Preprocessor took 41.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -207.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-12-09 02:08:33,285 INFO L168 Benchmark]: RCFGBuilder took 115.92 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: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-12-09 02:08:33,285 INFO L168 Benchmark]: TraceAbstraction took 138.04 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2018-12-09 02:08:33,286 INFO L168 Benchmark]: Witness Printer took 3.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 02:08:33,288 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 117.08 ms. Allocated memory is still 1.0 GB. Free memory was 948.6 MB in the beginning and 937.9 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 11.48 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -207.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 115.92 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: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 138.04 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.03 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: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L9] double x = 1.0; [L10] double x1 = x/2.5; VAL [x=1] [L12] COND FALSE !(x1 != x) VAL [x=1] [L18] CALL __VERIFIER_assert(x == 0) VAL [\old(cond)=0] [L2] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L2] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 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 AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 02:08:34,572 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 02:08:34,573 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 02:08:34,580 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 02:08:34,580 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 02:08:34,581 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 02:08:34,582 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 02:08:34,583 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 02:08:34,584 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 02:08:34,585 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 02:08:34,585 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 02:08:34,585 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 02:08:34,586 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 02:08:34,587 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 02:08:34,587 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 02:08:34,588 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 02:08:34,589 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 02:08:34,590 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 02:08:34,591 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 02:08:34,592 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 02:08:34,593 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 02:08:34,594 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 02:08:34,595 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 02:08:34,596 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 02:08:34,596 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 02:08:34,596 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 02:08:34,597 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 02:08:34,598 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 02:08:34,598 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 02:08:34,599 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 02:08:34,599 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 02:08:34,600 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 02:08:34,600 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 02:08:34,600 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 02:08:34,601 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 02:08:34,601 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 02:08:34,601 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 02:08:34,612 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 02:08:34,612 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 02:08:34,612 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 02:08:34,612 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 02:08:34,613 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 02:08:34,613 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 02:08:34,613 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 02:08:34,613 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 02:08:34,613 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 02:08:34,613 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 02:08:34,614 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 02:08:34,614 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 02:08:34,614 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 02:08:34,614 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 02:08:34,614 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 02:08:34,615 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 02:08:34,615 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 02:08:34,615 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 02:08:34,615 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 02:08:34,615 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 02:08:34,615 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 02:08:34,615 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 02:08:34,615 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 02:08:34,616 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 02:08:34,616 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 02:08:34,616 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 02:08:34,616 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 02:08:34,616 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 02:08:34,616 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 02:08:34,616 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 02:08:34,617 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 02:08:34,617 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 02:08:34,617 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 02:08:34,617 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 02:08:34,617 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 02:08:34,617 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8571d6e044ba86c3b82c24f6ff451bf497f2aedf [2018-12-09 02:08:34,642 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 02:08:34,651 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 02:08:34,654 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 02:08:34,655 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 02:08:34,655 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 02:08:34,656 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i [2018-12-09 02:08:34,700 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/data/4b07fda3f/81ef5f81ef51480788d258eecc24b32c/FLAG9aba1006c [2018-12-09 02:08:34,993 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 02:08:34,993 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i [2018-12-09 02:08:34,996 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/data/4b07fda3f/81ef5f81ef51480788d258eecc24b32c/FLAG9aba1006c [2018-12-09 02:08:35,004 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/data/4b07fda3f/81ef5f81ef51480788d258eecc24b32c [2018-12-09 02:08:35,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 02:08:35,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 02:08:35,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 02:08:35,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 02:08:35,009 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 02:08:35,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:08:35" (1/1) ... [2018-12-09 02:08:35,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f4428e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:35, skipping insertion in model container [2018-12-09 02:08:35,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:08:35" (1/1) ... [2018-12-09 02:08:35,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 02:08:35,024 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 02:08:35,108 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 02:08:35,112 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 02:08:35,121 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 02:08:35,129 INFO L195 MainTranslator]: Completed translation [2018-12-09 02:08:35,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:35 WrapperNode [2018-12-09 02:08:35,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 02:08:35,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 02:08:35,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 02:08:35,130 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 02:08:35,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:35" (1/1) ... [2018-12-09 02:08:35,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:35" (1/1) ... [2018-12-09 02:08:35,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 02:08:35,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 02:08:35,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 02:08:35,143 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 02:08:35,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:35" (1/1) ... [2018-12-09 02:08:35,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:35" (1/1) ... [2018-12-09 02:08:35,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:35" (1/1) ... [2018-12-09 02:08:35,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:35" (1/1) ... [2018-12-09 02:08:35,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:35" (1/1) ... [2018-12-09 02:08:35,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:35" (1/1) ... [2018-12-09 02:08:35,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:35" (1/1) ... [2018-12-09 02:08:35,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 02:08:35,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 02:08:35,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 02:08:35,159 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 02:08:35,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 02:08:35,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 02:08:35,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 02:08:35,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 02:08:35,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 02:08:35,223 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 02:08:35,223 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 02:08:35,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 02:08:35,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 02:08:35,893 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 02:08:35,894 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 02:08:35,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:08:35 BoogieIcfgContainer [2018-12-09 02:08:35,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 02:08:35,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 02:08:35,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 02:08:35,896 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 02:08:35,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:08:35" (1/3) ... [2018-12-09 02:08:35,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a238ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:08:35, skipping insertion in model container [2018-12-09 02:08:35,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:35" (2/3) ... [2018-12-09 02:08:35,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a238ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:08:35, skipping insertion in model container [2018-12-09 02:08:35,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:08:35" (3/3) ... [2018-12-09 02:08:35,898 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_true-unreach-call.i [2018-12-09 02:08:35,903 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 02:08:35,907 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 02:08:35,915 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 02:08:35,933 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 02:08:35,934 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 02:08:35,934 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 02:08:35,934 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 02:08:35,934 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 02:08:35,934 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 02:08:35,934 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 02:08:35,934 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 02:08:35,934 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 02:08:35,943 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-09 02:08:35,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 02:08:35,946 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:08:35,947 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 02:08:35,948 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:08:35,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:08:35,951 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-12-09 02:08:35,953 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 02:08:35,953 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-09 02:08:35,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:08:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:08:36,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:08:38,800 WARN L180 SmtUtils]: Spent 2.66 s on a formula simplification that was a NOOP. DAG size: 11 [2018-12-09 02:08:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 02:08:38,808 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 02:08:38,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 02:08:38,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 02:08:38,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 02:08:38,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 02:08:38,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 02:08:38,829 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-12-09 02:08:39,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:08:39,885 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-12-09 02:08:40,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 02:08:40,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-09 02:08:40,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:08:40,457 INFO L225 Difference]: With dead ends: 31 [2018-12-09 02:08:40,457 INFO L226 Difference]: Without dead ends: 12 [2018-12-09 02:08:40,459 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 02:08:40,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-09 02:08:40,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-09 02:08:40,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-09 02:08:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-09 02:08:40,479 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-09 02:08:40,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:08:40,480 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-09 02:08:40,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 02:08:40,480 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-09 02:08:40,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 02:08:40,480 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:08:40,480 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 02:08:40,480 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:08:40,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:08:40,481 INFO L82 PathProgramCache]: Analyzing trace with hash -429188558, now seen corresponding path program 1 times [2018-12-09 02:08:40,481 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 02:08:40,481 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-09 02:08:40,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:08:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 02:08:40,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:08:44,192 WARN L180 SmtUtils]: Spent 1.65 s on a formula simplification that was a NOOP. DAG size: 12 [2018-12-09 02:08:44,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 02:08:44,195 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 02:08:48,705 WARN L854 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x1~0)) is different from true [2018-12-09 02:08:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2018-12-09 02:08:48,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 02:08:48,724 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 02:08:48,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 02:09:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-12-09 02:09:01,905 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 02:09:01,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-12-09 02:09:01,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 02:09:01,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 02:09:01,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2018-12-09 02:09:01,906 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2018-12-09 02:09:04,105 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0)) (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0) c_main_~x1~0)) (not (fp.eq c_main_~x1~0 c_main_~x~0)))) is different from true [2018-12-09 02:09:06,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:09:06,252 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-12-09 02:09:06,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 02:09:06,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-12-09 02:09:06,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:09:06,253 INFO L225 Difference]: With dead ends: 19 [2018-12-09 02:09:06,253 INFO L226 Difference]: Without dead ends: 14 [2018-12-09 02:09:06,254 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=12, Invalid=14, Unknown=2, NotChecked=14, Total=42 [2018-12-09 02:09:06,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-09 02:09:06,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-09 02:09:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-09 02:09:06,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-12-09 02:09:06,257 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-12-09 02:09:06,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:09:06,258 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-12-09 02:09:06,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 02:09:06,258 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-12-09 02:09:06,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 02:09:06,258 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:09:06,258 INFO L402 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 02:09:06,259 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:09:06,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:09:06,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1003863954, now seen corresponding path program 2 times [2018-12-09 02:09:06,259 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 02:09:06,259 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-09 02:09:06,263 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-09 02:09:06,791 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 02:09:06,791 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 02:09:06,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:09:14,042 WARN L180 SmtUtils]: Spent 2.54 s on a formula simplification that was a NOOP. DAG size: 14 [2018-12-09 02:09:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 02:09:14,044 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 02:09:22,800 WARN L832 $PredicateComparison]: unable to prove that (or (fp.eq c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x1~0))) is different from false [2018-12-09 02:09:27,247 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-12-09 02:09:29,602 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-12-09 02:09:32,142 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from false [2018-12-09 02:09:34,689 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from true [2018-12-09 02:09:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2018-12-09 02:09:34,718 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 02:09:34,718 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 02:09:34,725 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 02:09:48,051 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 02:09:48,051 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-12-09 02:09:49,925 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 02:09:49,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 13 [2018-12-09 02:09:49,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 02:09:49,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 02:09:49,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=70, Unknown=7, NotChecked=54, Total=156 [2018-12-09 02:09:49,927 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-12-09 02:09:52,490 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 .cse2))) (= c_main_~x1~0 (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1)) (or (fp.eq c_main_~x~0 .cse2) (not (fp.eq c_main_~x1~0 c_main_~x~0))))) is different from true [2018-12-09 02:09:54,880 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0)) (let ((.cse1 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)))))) is different from true [2018-12-09 02:10:04,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:10:04,201 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-12-09 02:10:04,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 02:10:04,202 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-12-09 02:10:04,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:10:04,202 INFO L225 Difference]: With dead ends: 24 [2018-12-09 02:10:04,202 INFO L226 Difference]: Without dead ends: 16 [2018-12-09 02:10:04,203 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.0s TimeCoverageRelationStatistics Valid=33, Invalid=88, Unknown=9, NotChecked=110, Total=240 [2018-12-09 02:10:04,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-09 02:10:04,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-12-09 02:10:04,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-09 02:10:04,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-12-09 02:10:04,206 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-12-09 02:10:04,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:10:04,206 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-12-09 02:10:04,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 02:10:04,206 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-12-09 02:10:04,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-09 02:10:04,207 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 02:10:04,207 INFO L402 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 02:10:04,207 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 02:10:04,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 02:10:04,207 INFO L82 PathProgramCache]: Analyzing trace with hash -517174030, now seen corresponding path program 3 times [2018-12-09 02:10:04,208 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 02:10:04,208 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-09 02:10:04,211 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-12-09 02:10:04,931 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-09 02:10:04,932 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 02:10:04,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 02:10:08,250 WARN L180 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 7 [2018-12-09 02:10:10,643 WARN L832 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (and (= (fp.div roundNearestTiesToEven v_main_~x~0_13 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x~0) (not (fp.eq c_main_~x~0 v_main_~x~0_13)))) (= c_main_~x1~0 (fp.div roundNearestTiesToEven c_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))))) is different from false [2018-12-09 02:10:12,837 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (and (= (fp.div roundNearestTiesToEven v_main_~x~0_13 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x~0) (not (fp.eq c_main_~x~0 v_main_~x~0_13)))) (= c_main_~x1~0 (fp.div roundNearestTiesToEven c_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))))) is different from true [2018-12-09 02:10:15,219 WARN L832 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (and (= (fp.div roundNearestTiesToEven v_main_~x~0_13 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x~0) (not (fp.eq c_main_~x~0 v_main_~x~0_13)))) (fp.eq (fp.div roundNearestTiesToEven c_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x~0)) is different from false [2018-12-09 02:10:28,868 WARN L832 $PredicateComparison]: unable to prove that (or (and (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_13 .cse1))) (and (not (fp.eq .cse0 v_main_~x~0_13)) (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (and (exists ((v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse2 (fp.div roundNearestTiesToEven v_prenex_2 .cse3))) (and (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse3) .cse2) (not (fp.eq .cse2 v_prenex_2)) (fp.eq .cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) (= (bvadd |c___VERIFIER_assert_#in~cond| (_ bv4294967295 32)) (_ bv0 32)))) is different from false [2018-12-09 02:10:41,152 WARN L832 $PredicateComparison]: unable to prove that (or (and (= (_ bv0 32) c___VERIFIER_assert_~cond) (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_13 .cse1))) (and (not (fp.eq .cse0 v_main_~x~0_13)) (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))))) (and (exists ((v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse2 (fp.div roundNearestTiesToEven v_prenex_2 .cse3))) (and (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse3) .cse2) (not (fp.eq .cse2 v_prenex_2)) (fp.eq .cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) (= (bvadd c___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) is different from false [2018-12-09 02:10:48,325 WARN L832 $PredicateComparison]: unable to prove that (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_13 .cse1))) (and (not (fp.eq .cse0 v_main_~x~0_13)) (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-12-09 02:10:50,663 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_13 .cse1))) (and (not (fp.eq .cse0 v_main_~x~0_13)) (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-12-09 02:10:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 1 not checked. [2018-12-09 02:10:50,665 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 02:11:30,437 WARN L180 SmtUtils]: Spent 11.24 s on a formula simplification that was a NOOP. DAG size: 13 [2018-12-09 02:11:37,547 WARN L832 $PredicateComparison]: unable to prove that (forall ((v_main_~x~0_15 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_15 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 v_main_~x~0_15))))) is different from false [2018-12-09 02:11:39,937 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_main_~x~0_15 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_15 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 v_main_~x~0_15))))) is different from true [2018-12-09 02:12:08,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 02:12:08,633 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 02:12:08,639 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 02:12:38,767 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-09 02:12:38,767 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-12-09 02:12:40,379 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-09 02:12:40,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-12-09 02:12:40,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 02:12:40,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 02:12:40,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=39, Unknown=15, NotChecked=102, Total=182 [2018-12-09 02:12:40,380 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2018-12-09 02:12:42,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 02:12:42,832 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-12-09 02:12:43,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 02:12:43,226 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-12-09 02:12:43,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 02:12:43,226 INFO L225 Difference]: With dead ends: 16 [2018-12-09 02:12:43,227 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 02:12:43,227 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 66.3s TimeCoverageRelationStatistics Valid=26, Invalid=39, Unknown=15, NotChecked=102, Total=182 [2018-12-09 02:12:43,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 02:12:43,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 02:12:43,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 02:12:43,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 02:12:43,228 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-12-09 02:12:43,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 02:12:43,228 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 02:12:43,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 02:12:43,228 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 02:12:43,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 02:12:43,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 02:12:44,970 WARN L180 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 44 DAG size of output: 1 [2018-12-09 02:13:05,887 WARN L180 SmtUtils]: Spent 20.92 s on a formula simplification that was a NOOP. DAG size: 18 [2018-12-09 02:15:07,919 WARN L180 SmtUtils]: Spent 2.03 m on a formula simplification. DAG size of input: 35 DAG size of output: 20 [2018-12-09 02:15:07,921 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 02:15:07,921 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 02:15:07,921 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 02:15:07,921 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 02:15:07,922 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 02:15:07,922 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 02:15:07,922 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 7 20) the Hoare annotation is: true [2018-12-09 02:15:07,922 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 7 20) no Hoare annotation was computed. [2018-12-09 02:15:07,922 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-12-09 02:15:07,922 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 7 20) no Hoare annotation was computed. [2018-12-09 02:15:07,923 INFO L444 ceAbstractionStarter]: At program point L12-2(lines 12 16) the Hoare annotation is: (let ((.cse0 (= main_~x1~0 (fp.div roundNearestTiesToEven main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))))) (or (and (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (and (= (fp.div roundNearestTiesToEven v_main_~x~0_13 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) main_~x~0) (not (fp.eq main_~x~0 v_main_~x~0_13)))) .cse0) (and (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) main_~x~0) .cse0))) [2018-12-09 02:15:07,923 INFO L444 ceAbstractionStarter]: At program point L12-3(lines 12 16) the Hoare annotation is: (or (and (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (and (= (fp.div roundNearestTiesToEven v_main_~x~0_13 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) main_~x~0) (not (fp.eq main_~x~0 v_main_~x~0_13)))) (fp.eq (fp.div roundNearestTiesToEven main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) main_~x~0)) (fp.eq main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) [2018-12-09 02:15:07,923 INFO L448 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2018-12-09 02:15:07,923 INFO L448 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2018-12-09 02:15:07,923 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2018-12-09 02:15:07,923 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2018-12-09 02:15:07,923 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2018-12-09 02:15:07,924 INFO L448 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2018-12-09 02:15:07,930 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,930 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2018-12-09 02:15:07,931 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,931 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2018-12-09 02:15:07,931 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,931 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,931 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,932 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,932 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,935 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,935 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2018-12-09 02:15:07,935 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,935 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2018-12-09 02:15:07,936 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,936 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,936 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,936 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,936 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:15:07 BoogieIcfgContainer [2018-12-09 02:15:07,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 02:15:07,939 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 02:15:07,939 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 02:15:07,939 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 02:15:07,939 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:08:35" (3/4) ... [2018-12-09 02:15:07,942 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 02:15:07,946 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 02:15:07,947 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 02:15:07,947 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-09 02:15:07,949 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-09 02:15:07,949 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-09 02:15:07,949 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 02:15:07,965 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists v_main_~x~0_13 : C_DOUBLE :: ~fp.div~DOUBLE(~roundNearestTiesToEven, v_main_~x~0_13, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)) == x && !~fp.eq~DOUBLE(x, v_main_~x~0_13)) && x1 == ~fp.div~DOUBLE(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) || (~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0) == x && x1 == ~fp.div~DOUBLE(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) [2018-12-09 02:15:07,971 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_fc839b25-0026-4aa7-a3ea-f5319460794d/bin-2019/utaipan/witness.graphml [2018-12-09 02:15:07,971 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 02:15:07,972 INFO L168 Benchmark]: Toolchain (without parser) took 392965.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 943.4 MB in the beginning and 940.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 122.2 MB. Max. memory is 11.5 GB. [2018-12-09 02:15:07,972 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 02:15:07,972 INFO L168 Benchmark]: CACSL2BoogieTranslator took 122.46 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 02:15:07,973 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.26 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 02:15:07,973 INFO L168 Benchmark]: Boogie Preprocessor took 15.04 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 02:15:07,973 INFO L168 Benchmark]: RCFGBuilder took 735.46 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-12-09 02:15:07,974 INFO L168 Benchmark]: TraceAbstraction took 392044.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 940.2 MB in the end (delta: 147.8 MB). Peak memory consumption was 147.8 MB. Max. memory is 11.5 GB. [2018-12-09 02:15:07,974 INFO L168 Benchmark]: Witness Printer took 32.43 ms. Allocated memory is still 1.1 GB. Free memory is still 940.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 02:15:07,976 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 122.46 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.26 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.04 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 735.46 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 392044.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 940.2 MB in the end (delta: 147.8 MB). Peak memory consumption was 147.8 MB. Max. memory is 11.5 GB. * Witness Printer took 32.43 ms. Allocated memory is still 1.1 GB. Free memory is still 940.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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 [2018-12-09 02:15:07,979 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,979 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2018-12-09 02:15:07,979 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,980 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2018-12-09 02:15:07,980 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,980 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,980 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,980 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,980 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,981 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,981 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2018-12-09 02:15:07,981 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,981 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2018-12-09 02:15:07,981 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,981 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,982 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,982 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 02:15:07,982 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((\exists v_main_~x~0_13 : C_DOUBLE :: ~fp.div~DOUBLE(~roundNearestTiesToEven, v_main_~x~0_13, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)) == x && !~fp.eq~DOUBLE(x, v_main_~x~0_13)) && x1 == ~fp.div~DOUBLE(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) || (~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0) == x && x1 == ~fp.div~DOUBLE(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 391.9s OverallTime, 4 OverallIterations, 5 TraceHistogramMax, 23.1s AutomataDifference, 0.0s DeadEndRemovalTime, 144.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 2 SDslu, 106 SDs, 0 SdLazy, 48 SolverSat, 5 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 11.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 50 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 114.1s 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 AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 18 NumberOfFragments, 72 HoareAnnotationTreeSize, 11 FomulaSimplifications, 211 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 249 FormulaSimplificationTreeSizeReductionInter, 144.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 57.1s SatisfiabilityAnalysisTime, 162.2s InterpolantComputationTime, 88 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 67 ConstructedInterpolants, 5 QuantifiedInterpolants, 7126 SizeOfPredicates, 12 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 14/29 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...