./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 aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/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_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/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_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/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_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/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-aa41828 [2018-11-23 00:19:23,512 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 00:19:23,513 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 00:19:23,524 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 00:19:23,524 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 00:19:23,525 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 00:19:23,526 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 00:19:23,527 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 00:19:23,529 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 00:19:23,529 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 00:19:23,530 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 00:19:23,530 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 00:19:23,531 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 00:19:23,532 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 00:19:23,534 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 00:19:23,534 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 00:19:23,535 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 00:19:23,536 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 00:19:23,538 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 00:19:23,540 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 00:19:23,540 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 00:19:23,542 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 00:19:23,544 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 00:19:23,544 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 00:19:23,544 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 00:19:23,546 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 00:19:23,546 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 00:19:23,547 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 00:19:23,548 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 00:19:23,549 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 00:19:23,549 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 00:19:23,550 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 00:19:23,550 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 00:19:23,550 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 00:19:23,551 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 00:19:23,551 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 00:19:23,552 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 00:19:23,564 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 00:19:23,564 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 00:19:23,565 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 00:19:23,565 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 00:19:23,565 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 00:19:23,565 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 00:19:23,565 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 00:19:23,565 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 00:19:23,566 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 00:19:23,566 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 00:19:23,566 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 00:19:23,566 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 00:19:23,566 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 00:19:23,567 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 00:19:23,567 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 00:19:23,567 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 00:19:23,567 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 00:19:23,567 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 00:19:23,568 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 00:19:23,568 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 00:19:23,568 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 00:19:23,568 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 00:19:23,568 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 00:19:23,568 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 00:19:23,569 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 00:19:23,569 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 00:19:23,569 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 00:19:23,569 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 00:19:23,569 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 00:19:23,569 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 00:19:23,570 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 00:19:23,570 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 00:19:23,570 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 00:19:23,570 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 00:19:23,570 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 00:19:23,570 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 00:19:23,570 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 00:19:23,570 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_32efddeb-72dd-4adb-877e-90777deaf68d/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 [2018-11-23 00:19:23,597 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 00:19:23,608 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 00:19:23,611 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 00:19:23,612 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 00:19:23,613 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 00:19:23,614 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i [2018-11-23 00:19:23,668 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/data/b2f4088f6/5da1afc7c309432582bb04726f52d02b/FLAG6ec25313b [2018-11-23 00:19:24,036 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 00:19:24,037 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i [2018-11-23 00:19:24,042 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/data/b2f4088f6/5da1afc7c309432582bb04726f52d02b/FLAG6ec25313b [2018-11-23 00:19:24,053 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/data/b2f4088f6/5da1afc7c309432582bb04726f52d02b [2018-11-23 00:19:24,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 00:19:24,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 00:19:24,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 00:19:24,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 00:19:24,060 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 00:19:24,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:19:24" (1/1) ... [2018-11-23 00:19:24,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd9ff0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:24, skipping insertion in model container [2018-11-23 00:19:24,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:19:24" (1/1) ... [2018-11-23 00:19:24,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 00:19:24,086 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 00:19:24,220 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 00:19:24,224 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 00:19:24,235 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 00:19:24,245 INFO L195 MainTranslator]: Completed translation [2018-11-23 00:19:24,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:24 WrapperNode [2018-11-23 00:19:24,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 00:19:24,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 00:19:24,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 00:19:24,247 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 00:19:24,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:24" (1/1) ... [2018-11-23 00:19:24,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:24" (1/1) ... [2018-11-23 00:19:24,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 00:19:24,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 00:19:24,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 00:19:24,263 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 00:19:24,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:24" (1/1) ... [2018-11-23 00:19:24,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:24" (1/1) ... [2018-11-23 00:19:24,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:24" (1/1) ... [2018-11-23 00:19:24,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:24" (1/1) ... [2018-11-23 00:19:24,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:24" (1/1) ... [2018-11-23 00:19:24,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:24" (1/1) ... [2018-11-23 00:19:24,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:24" (1/1) ... [2018-11-23 00:19:24,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 00:19:24,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 00:19:24,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 00:19:24,324 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 00:19:24,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 00:19:24,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 00:19:24,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 00:19:24,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 00:19:24,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 00:19:24,373 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 00:19:24,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 00:19:24,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 00:19:24,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 00:19:24,476 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 00:19:24,476 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 00:19:24,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:19:24 BoogieIcfgContainer [2018-11-23 00:19:24,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 00:19:24,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 00:19:24,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 00:19:24,481 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 00:19:24,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:19:24" (1/3) ... [2018-11-23 00:19:24,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3715c49f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:19:24, skipping insertion in model container [2018-11-23 00:19:24,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:24" (2/3) ... [2018-11-23 00:19:24,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3715c49f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:19:24, skipping insertion in model container [2018-11-23 00:19:24,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:19:24" (3/3) ... [2018-11-23 00:19:24,484 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_true-unreach-call.i [2018-11-23 00:19:24,491 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 00:19:24,496 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 00:19:24,507 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 00:19:24,532 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 00:19:24,532 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 00:19:24,532 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 00:19:24,533 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 00:19:24,533 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 00:19:24,533 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 00:19:24,533 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 00:19:24,533 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 00:19:24,551 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-23 00:19:24,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 00:19:24,556 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:19:24,557 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:19:24,559 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 00:19:24,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:19:24,563 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-11-23 00:19:24,565 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:19:24,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:19:24,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:19:24,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:19:24,602 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:19:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:19:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:19:24,645 INFO L469 BasicCegarLoop]: Counterexample might be feasible ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #32#return; [?] CALL call #t~ret0 := main(); [?] ~x~0 := 1.0;~x1~0 := ~someBinaryArithmeticDOUBLEoperation(~x~0, 2.5); VAL [main_~x~0=1.0] [?] assume !~someBinaryDOUBLEComparisonOperation(~x1~0, ~x~0); VAL [main_~x~0=1.0] [?] CALL call __VERIFIER_assert((if ~someBinaryDOUBLEComparisonOperation(~x~0, ~convertINTToDOUBLE(0)) then 1 else 0)); VAL [|__VERIFIER_assert_#in~cond|=0] [?] ~cond := #in~cond; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] assume 0 == ~cond; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] assume !false; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L9] ~x~0 := 1.0; [L10] ~x1~0 := ~someBinaryArithmeticDOUBLEoperation(~x~0, 2.5); VAL [~x~0=1.0] [L12-L16] assume !~someBinaryDOUBLEComparisonOperation(~x1~0, ~x~0); VAL [~x~0=1.0] [L18] CALL call __VERIFIER_assert((if ~someBinaryDOUBLEComparisonOperation(~x~0, ~convertINTToDOUBLE(0)) then 1 else 0)); VAL [#in~cond=0] [L2] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L2] assume 0 == ~cond; VAL [#in~cond=0, ~cond=0] [L2] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L9] ~x~0 := 1.0; [L10] ~x1~0 := ~someBinaryArithmeticDOUBLEoperation(~x~0, 2.5); VAL [~x~0=1.0] [L12-L16] assume !~someBinaryDOUBLEComparisonOperation(~x1~0, ~x~0); VAL [~x~0=1.0] [L18] CALL call __VERIFIER_assert((if ~someBinaryDOUBLEComparisonOperation(~x~0, ~convertINTToDOUBLE(0)) then 1 else 0)); VAL [#in~cond=0] [L2] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L2] assume 0 == ~cond; VAL [#in~cond=0, ~cond=0] [L2] assert false; VAL [#in~cond=0, ~cond=0] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L9] ~x~0 := 1.0; [L10] ~x1~0 := ~someBinaryArithmeticDOUBLEoperation(~x~0, 2.5); VAL [~x~0=1.0] [L12-L16] COND TRUE !~someBinaryDOUBLEComparisonOperation(~x1~0, ~x~0) VAL [~x~0=1.0] [L18] CALL call __VERIFIER_assert((if ~someBinaryDOUBLEComparisonOperation(~x~0, ~convertINTToDOUBLE(0)) then 1 else 0)); VAL [#in~cond=0] [L2] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L2] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L2] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L9] ~x~0 := 1.0; [L10] ~x1~0 := ~someBinaryArithmeticDOUBLEoperation(~x~0, 2.5); VAL [~x~0=1.0] [L12-L16] COND TRUE !~someBinaryDOUBLEComparisonOperation(~x1~0, ~x~0) VAL [~x~0=1.0] [L18] CALL call __VERIFIER_assert((if ~someBinaryDOUBLEComparisonOperation(~x~0, ~convertINTToDOUBLE(0)) then 1 else 0)); VAL [#in~cond=0] [L2] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L2] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L2] assert false; VAL [#in~cond=0, ~cond=0] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L9] ~x~0 := 1.0; [L10] ~x1~0 := ~someBinaryArithmeticDOUBLEoperation(~x~0, 2.5); VAL [~x~0=1.0] [L12-L16] COND TRUE !~someBinaryDOUBLEComparisonOperation(~x1~0, ~x~0) VAL [~x~0=1.0] [L18] CALL call __VERIFIER_assert((if ~someBinaryDOUBLEComparisonOperation(~x~0, ~convertINTToDOUBLE(0)) then 1 else 0)); VAL [#in~cond=0] [L2] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L2] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L2] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret0 := main(); [L9] ~x~0 := 1.0; [L10] ~x1~0 := ~someBinaryArithmeticDOUBLEoperation(~x~0, 2.5); VAL [~x~0=1.0] [L12-L16] COND TRUE !~someBinaryDOUBLEComparisonOperation(~x1~0, ~x~0) VAL [~x~0=1.0] [L18] CALL call __VERIFIER_assert((if ~someBinaryDOUBLEComparisonOperation(~x~0, ~convertINTToDOUBLE(0)) then 1 else 0)); VAL [#in~cond=0] [L2] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L2] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L2] assert false; VAL [#in~cond=0, ~cond=0] [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] ----- [2018-11-23 00:19:24,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:19:24 BoogieIcfgContainer [2018-11-23 00:19:24,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 00:19:24,666 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 00:19:24,666 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 00:19:24,667 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 00:19:24,667 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:19:24" (3/4) ... [2018-11-23 00:19:24,670 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 00:19:24,670 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 00:19:24,671 INFO L168 Benchmark]: Toolchain (without parser) took 614.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.0 MB). Free memory was 959.1 MB in the beginning and 1.2 GB in the end (delta: -195.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 00:19:24,673 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 00:19:24,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 188.51 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 00:19:24,674 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.13 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 00:19:24,674 INFO L168 Benchmark]: Boogie Preprocessor took 60.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.0 MB). Free memory was 948.4 MB in the beginning and 1.2 GB in the end (delta: -233.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 11.5 GB. [2018-11-23 00:19:24,675 INFO L168 Benchmark]: RCFGBuilder took 153.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2018-11-23 00:19:24,676 INFO L168 Benchmark]: TraceAbstraction took 188.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-11-23 00:19:24,677 INFO L168 Benchmark]: Witness Printer took 3.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 00:19:24,681 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 188.51 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 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 16.13 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.0 MB). Free memory was 948.4 MB in the beginning and 1.2 GB in the end (delta: -233.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 153.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 188.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * Witness Printer took 3.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * 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 12, 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-aa41828 [2018-11-23 00:19:26,352 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 00:19:26,354 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 00:19:26,363 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 00:19:26,363 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 00:19:26,364 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 00:19:26,365 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 00:19:26,367 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 00:19:26,368 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 00:19:26,369 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 00:19:26,370 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 00:19:26,370 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 00:19:26,371 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 00:19:26,372 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 00:19:26,373 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 00:19:26,374 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 00:19:26,374 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 00:19:26,376 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 00:19:26,378 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 00:19:26,379 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 00:19:26,380 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 00:19:26,381 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 00:19:26,383 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 00:19:26,383 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 00:19:26,383 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 00:19:26,384 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 00:19:26,385 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 00:19:26,386 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 00:19:26,386 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 00:19:26,387 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 00:19:26,387 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 00:19:26,388 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 00:19:26,388 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 00:19:26,388 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 00:19:26,389 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 00:19:26,390 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 00:19:26,390 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-23 00:19:26,403 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 00:19:26,403 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 00:19:26,404 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 00:19:26,404 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 00:19:26,404 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 00:19:26,404 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 00:19:26,405 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 00:19:26,405 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 00:19:26,405 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 00:19:26,405 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 00:19:26,406 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 00:19:26,406 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 00:19:26,406 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 00:19:26,406 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 00:19:26,406 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 00:19:26,407 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 00:19:26,407 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 00:19:26,407 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 00:19:26,407 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 00:19:26,407 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 00:19:26,408 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 00:19:26,408 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 00:19:26,408 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 00:19:26,408 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 00:19:26,408 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 00:19:26,409 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 00:19:26,409 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 00:19:26,409 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 00:19:26,409 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 00:19:26,409 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 00:19:26,409 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 00:19:26,410 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-23 00:19:26,410 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 00:19:26,410 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 00:19:26,410 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 00:19:26,410 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_32efddeb-72dd-4adb-877e-90777deaf68d/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 [2018-11-23 00:19:26,446 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 00:19:26,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 00:19:26,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 00:19:26,460 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 00:19:26,460 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 00:19:26,461 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i [2018-11-23 00:19:26,507 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/data/510fd66df/eee21a2da232472ab4770aac22f00fa9/FLAG3c8f02e05 [2018-11-23 00:19:26,857 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 00:19:26,857 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i [2018-11-23 00:19:26,862 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/data/510fd66df/eee21a2da232472ab4770aac22f00fa9/FLAG3c8f02e05 [2018-11-23 00:19:26,872 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/data/510fd66df/eee21a2da232472ab4770aac22f00fa9 [2018-11-23 00:19:26,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 00:19:26,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 00:19:26,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 00:19:26,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 00:19:26,881 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 00:19:26,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:19:26" (1/1) ... [2018-11-23 00:19:26,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb106ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:26, skipping insertion in model container [2018-11-23 00:19:26,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:19:26" (1/1) ... [2018-11-23 00:19:26,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 00:19:26,906 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 00:19:27,042 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 00:19:27,048 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 00:19:27,063 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 00:19:27,073 INFO L195 MainTranslator]: Completed translation [2018-11-23 00:19:27,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:27 WrapperNode [2018-11-23 00:19:27,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 00:19:27,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 00:19:27,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 00:19:27,075 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 00:19:27,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:27" (1/1) ... [2018-11-23 00:19:27,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:27" (1/1) ... [2018-11-23 00:19:27,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 00:19:27,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 00:19:27,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 00:19:27,091 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 00:19:27,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:27" (1/1) ... [2018-11-23 00:19:27,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:27" (1/1) ... [2018-11-23 00:19:27,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:27" (1/1) ... [2018-11-23 00:19:27,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:27" (1/1) ... [2018-11-23 00:19:27,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:27" (1/1) ... [2018-11-23 00:19:27,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:27" (1/1) ... [2018-11-23 00:19:27,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:27" (1/1) ... [2018-11-23 00:19:27,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 00:19:27,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 00:19:27,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 00:19:27,114 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 00:19:27,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 00:19:27,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 00:19:27,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 00:19:27,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 00:19:27,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 00:19:27,217 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 00:19:27,217 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 00:19:27,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 00:19:27,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 00:19:28,084 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 00:19:28,084 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 00:19:28,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:19:28 BoogieIcfgContainer [2018-11-23 00:19:28,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 00:19:28,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 00:19:28,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 00:19:28,088 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 00:19:28,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:19:26" (1/3) ... [2018-11-23 00:19:28,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d0ac57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:19:28, skipping insertion in model container [2018-11-23 00:19:28,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:19:27" (2/3) ... [2018-11-23 00:19:28,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d0ac57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:19:28, skipping insertion in model container [2018-11-23 00:19:28,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:19:28" (3/3) ... [2018-11-23 00:19:28,091 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_true-unreach-call.i [2018-11-23 00:19:28,101 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 00:19:28,106 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 00:19:28,117 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 00:19:28,140 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 00:19:28,141 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 00:19:28,141 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 00:19:28,142 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 00:19:28,142 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 00:19:28,142 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 00:19:28,142 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 00:19:28,142 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 00:19:28,142 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 00:19:28,161 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-23 00:19:28,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 00:19:28,166 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:19:28,166 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:19:28,168 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 00:19:28,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:19:28,172 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-11-23 00:19:28,175 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-23 00:19:28,175 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-23 00:19:28,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:19:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:19:28,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:19:31,118 WARN L180 SmtUtils]: Spent 2.70 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-23 00:19:31,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:19:31,128 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 00:19:31,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 00:19:31,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 00:19:31,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 00:19:31,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 00:19:31,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 00:19:31,155 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-11-23 00:19:32,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:19:32,442 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-11-23 00:19:33,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 00:19:33,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-23 00:19:33,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:19:33,179 INFO L225 Difference]: With dead ends: 31 [2018-11-23 00:19:33,179 INFO L226 Difference]: Without dead ends: 12 [2018-11-23 00:19:33,182 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 00:19:33,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-23 00:19:33,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-23 00:19:33,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-23 00:19:33,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-23 00:19:33,214 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-23 00:19:33,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:19:33,215 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-23 00:19:33,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 00:19:33,215 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-23 00:19:33,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-23 00:19:33,215 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:19:33,216 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:19:33,216 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 00:19:33,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:19:33,217 INFO L82 PathProgramCache]: Analyzing trace with hash -429188558, now seen corresponding path program 1 times [2018-11-23 00:19:33,217 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-23 00:19:33,218 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-23 00:19:33,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:19:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:19:33,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:19:38,317 WARN L180 SmtUtils]: Spent 2.43 s on a formula simplification that was a NOOP. DAG size: 12 [2018-11-23 00:19:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:19:38,320 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:19:55,263 WARN L180 SmtUtils]: Spent 2.83 s on a formula simplification that was a NOOP. DAG size: 7 [2018-11-23 00:19:55,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:19:55,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:19:55,289 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/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 [2018-11-23 00:19:55,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:20:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-11-23 00:20:08,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 00:20:08,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-23 00:20:08,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 00:20:08,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 00:20:08,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=13, Unknown=5, NotChecked=0, Total=30 [2018-11-23 00:20:08,805 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2018-11-23 00:20:22,365 WARN L832 $PredicateComparison]: unable to prove that (and (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x1~0)) (not (fp.eq c_main_~x1~0 c_main_~x~0))) is different from false [2018-11-23 00:20:24,606 WARN L854 $PredicateComparison]: unable to prove that (and (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x1~0)) (not (fp.eq c_main_~x1~0 c_main_~x~0))) is different from true [2018-11-23 00:20:27,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:20:27,219 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-11-23 00:20:27,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 00:20:27,457 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-11-23 00:20:27,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:20:27,457 INFO L225 Difference]: With dead ends: 20 [2018-11-23 00:20:27,457 INFO L226 Difference]: Without dead ends: 15 [2018-11-23 00:20:27,458 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=19, Invalid=19, Unknown=8, NotChecked=10, Total=56 [2018-11-23 00:20:27,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-23 00:20:27,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-23 00:20:27,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-23 00:20:27,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-23 00:20:27,462 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2018-11-23 00:20:27,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:20:27,462 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-23 00:20:27,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 00:20:27,463 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-23 00:20:27,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-23 00:20:27,463 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:20:27,463 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:20:27,464 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 00:20:27,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:20:27,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1090549245, now seen corresponding path program 2 times [2018-11-23 00:20:27,464 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-23 00:20:27,464 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-23 00:20:27,472 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-23 00:20:28,338 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 00:20:28,339 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:20:28,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:20:38,614 WARN L180 SmtUtils]: Spent 2.45 s on a formula simplification that was a NOOP. DAG size: 15 [2018-11-23 00:20:38,617 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:20:38,618 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:21:19,429 WARN L180 SmtUtils]: Spent 9.06 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-23 00:21:21,824 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 [2018-11-23 00:21:24,210 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 [2018-11-23 00:21:26,753 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 [2018-11-23 00:21:29,296 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 [2018-11-23 00:21:32,028 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 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .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 [2018-11-23 00:21:34,771 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 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .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 [2018-11-23 00:21:34,784 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2018-11-23 00:21:34,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:21:34,800 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/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 [2018-11-23 00:21:34,810 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 00:21:48,365 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 00:21:48,365 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-11-23 00:21:51,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 00:21:51,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 15 [2018-11-23 00:21:51,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 00:21:51,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 00:21:51,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=96, Unknown=14, NotChecked=66, Total=210 [2018-11-23 00:21:51,101 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 15 states. [2018-11-23 00:21:53,872 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0)) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0) .cse0) .cse0))) (or (fp.eq .cse1 .cse2) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)))) (or (fp.eq c_main_~x~0 .cse2) (not (fp.eq c_main_~x1~0 c_main_~x~0))))) is different from true [2018-11-23 00:21:56,482 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (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 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0) .cse0))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)) (fp.eq .cse1 .cse2))) (or (fp.eq c_main_~x~0 .cse2) (not (fp.eq c_main_~x1~0 c_main_~x~0))))) is different from true [2018-11-23 00:21:58,885 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 (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .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 [2018-11-23 00:22:06,075 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (or (fp.eq c_main_~x1~0 .cse0) (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x1~0))) (or (fp.eq c_main_~x~0 .cse0) (not (fp.eq c_main_~x1~0 c_main_~x~0))))) is different from false [2018-11-23 00:22:08,280 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (or (fp.eq c_main_~x1~0 .cse0) (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x1~0))) (or (fp.eq c_main_~x~0 .cse0) (not (fp.eq c_main_~x1~0 c_main_~x~0))))) is different from true [2018-11-23 00:22:10,919 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (fp.eq c_main_~x~0 .cse0) (or (fp.eq c_main_~x1~0 .cse0) (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 [2018-11-23 00:22:24,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:22:24,865 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-11-23 00:22:24,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 00:22:24,865 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2018-11-23 00:22:24,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:22:24,866 INFO L225 Difference]: With dead ends: 27 [2018-11-23 00:22:24,866 INFO L226 Difference]: Without dead ends: 18 [2018-11-23 00:22:24,867 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 85.2s TimeCoverageRelationStatistics Valid=48, Invalid=120, Unknown=20, NotChecked=232, Total=420 [2018-11-23 00:22:24,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-23 00:22:24,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-23 00:22:24,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-23 00:22:24,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-23 00:22:24,871 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2018-11-23 00:22:24,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:22:24,871 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-23 00:22:24,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 00:22:24,871 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-23 00:22:24,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-23 00:22:24,871 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:22:24,872 INFO L402 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:22:24,872 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 00:22:24,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:22:24,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1945796014, now seen corresponding path program 3 times [2018-11-23 00:22:24,872 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-23 00:22:24,872 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-23 00:22:24,875 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-23 00:22:25,601 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 00:22:25,601 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:22:25,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:22:29,275 WARN L180 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 7 [2018-11-23 00:22:31,658 WARN L832 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_14 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_14 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))))) (and (not (fp.eq .cse0 v_main_~x~0_14)) (= .cse0 c_main_~x~0)))) (= c_main_~x1~0 (fp.div roundNearestTiesToEven c_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))))) is different from false [2018-11-23 00:22:33,849 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_14 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_14 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))))) (and (not (fp.eq .cse0 v_main_~x~0_14)) (= .cse0 c_main_~x~0)))) (= c_main_~x1~0 (fp.div roundNearestTiesToEven c_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))))) is different from true [2018-11-23 00:22:36,228 WARN L832 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_14 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_14 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))))) (and (not (fp.eq .cse0 v_main_~x~0_14)) (= .cse0 c_main_~x~0)))) (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 [2018-11-23 00:22:49,132 WARN L832 $PredicateComparison]: unable to prove that (or (and (exists ((v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_prenex_2 .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 v_prenex_2)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) (= (bvadd |c___VERIFIER_assert_#in~cond| (_ bv4294967295 32)) (_ bv0 32))) (and (exists ((v_main_~x~0_14 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse2 (fp.div roundNearestTiesToEven v_main_~x~0_14 .cse3))) (and (not (fp.eq .cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse2 v_main_~x~0_14)) (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse3) .cse2))))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from false [2018-11-23 00:23:01,470 WARN L832 $PredicateComparison]: unable to prove that (or (and (= (_ bv0 32) c___VERIFIER_assert_~cond) (exists ((v_main_~x~0_14 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_14 .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 v_main_~x~0_14)) (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 [2018-11-23 00:23:08,640 WARN L832 $PredicateComparison]: unable to prove that (exists ((v_main_~x~0_14 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_14 .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 v_main_~x~0_14)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-11-23 00:23:10,991 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_main_~x~0_14 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_14 .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 v_main_~x~0_14)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-11-23 00:23:10,994 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 1 not checked. [2018-11-23 00:23:10,994 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:23:27,793 WARN L854 $PredicateComparison]: unable to prove that (or (fp.eq c_main_~x1~0 c_main_~x~0) (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 true [2018-11-23 00:23:34,986 WARN L832 $PredicateComparison]: unable to prove that (forall ((v_main_~x~0_16 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_16 .cse1))) (or (fp.eq .cse0 v_main_~x~0_16) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) is different from false [2018-11-23 00:23:37,372 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_main_~x~0_16 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_16 .cse1))) (or (fp.eq .cse0 v_main_~x~0_16) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) is different from true [2018-11-23 00:24:15,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:24:15,913 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/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 [2018-11-23 00:24:15,919 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 00:24:58,212 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-11-23 00:24:58,212 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (8)] Forcibly destroying the process [2018-11-23 00:25:00,736 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 00:25:00,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-11-23 00:25:00,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 00:25:00,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 00:25:00,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=14, NotChecked=112, Total=182 [2018-11-23 00:25:00,737 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 8 states. [2018-11-23 00:25:03,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:25:03,242 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-11-23 00:25:03,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 00:25:03,678 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-11-23 00:25:03,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:25:03,678 INFO L225 Difference]: With dead ends: 18 [2018-11-23 00:25:03,678 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 00:25:03,679 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.2s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=14, NotChecked=112, Total=182 [2018-11-23 00:25:03,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 00:25:03,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 00:25:03,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 00:25:03,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 00:25:03,680 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-11-23 00:25:03,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:25:03,680 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 00:25:03,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 00:25:03,680 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 00:25:03,681 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 00:25:03,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 00:25:05,562 WARN L180 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 44 DAG size of output: 1 [2018-11-23 00:25:28,623 WARN L180 SmtUtils]: Spent 23.06 s on a formula simplification that was a NOOP. DAG size: 18 [2018-11-23 00:26:39,534 WARN L180 SmtUtils]: Spent 1.18 m on a formula simplification. DAG size of input: 34 DAG size of output: 22 [2018-11-23 00:26:39,535 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 00:26:39,535 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 00:26:39,535 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 00:26:39,536 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 00:26:39,536 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 00:26:39,536 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 00:26:39,536 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 7 20) the Hoare annotation is: true [2018-11-23 00:26:39,536 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 7 20) no Hoare annotation was computed. [2018-11-23 00:26:39,536 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-23 00:26:39,536 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 7 20) no Hoare annotation was computed. [2018-11-23 00:26:39,536 INFO L444 ceAbstractionStarter]: At program point L12-2(lines 12 16) the Hoare annotation is: (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (or (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (= .cse0 main_~x~0) (= main_~x1~0 (fp.div roundNearestTiesToEven .cse0 .cse1)))) (and (exists ((v_main_~x~0_14 (_ FloatingPoint 11 53))) (let ((.cse2 (fp.div roundNearestTiesToEven v_main_~x~0_14 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))))) (and (not (fp.eq .cse2 v_main_~x~0_14)) (= .cse2 main_~x~0)))) (= main_~x1~0 (fp.div roundNearestTiesToEven main_~x~0 .cse1))))) [2018-11-23 00:26:39,537 INFO L444 ceAbstractionStarter]: At program point L12-3(lines 12 16) the Hoare annotation is: (or (and (exists ((v_main_~x~0_14 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_14 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))))) (and (not (fp.eq .cse0 v_main_~x~0_14)) (= .cse0 main_~x~0)))) (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)))) [2018-11-23 00:26:39,537 INFO L448 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2018-11-23 00:26:39,537 INFO L448 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2018-11-23 00:26:39,537 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2018-11-23 00:26:39,537 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2018-11-23 00:26:39,537 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2018-11-23 00:26:39,537 INFO L448 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2018-11-23 00:26:39,543 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,544 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,544 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,544 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,544 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,545 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-23 00:26:39,545 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,545 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-23 00:26:39,545 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,545 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-23 00:26:39,545 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,545 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,545 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,548 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,549 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,549 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,549 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,549 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,549 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-23 00:26:39,549 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,550 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-23 00:26:39,550 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,550 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-23 00:26:39,550 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,550 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,551 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:26:39 BoogieIcfgContainer [2018-11-23 00:26:39,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 00:26:39,553 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 00:26:39,553 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 00:26:39,553 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 00:26:39,554 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:19:28" (3/4) ... [2018-11-23 00:26:39,556 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 00:26:39,560 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 00:26:39,560 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 00:26:39,560 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-23 00:26:39,562 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 00:26:39,562 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 00:26:39,562 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 00:26:39,578 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0) == x && x1 == ~fp.div~DOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) || ((\exists v_main_~x~0_14 : C_DOUBLE :: !~fp.eq~DOUBLE(~fp.div~DOUBLE(~roundNearestTiesToEven, v_main_~x~0_14, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)), v_main_~x~0_14) && ~fp.div~DOUBLE(~roundNearestTiesToEven, v_main_~x~0_14, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)) == x) && x1 == ~fp.div~DOUBLE(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) [2018-11-23 00:26:39,584 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_32efddeb-72dd-4adb-877e-90777deaf68d/bin-2019/utaipan/witness.graphml [2018-11-23 00:26:39,585 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 00:26:39,585 INFO L168 Benchmark]: Toolchain (without parser) took 432710.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 948.7 MB in the beginning and 966.2 MB in the end (delta: -17.6 MB). Peak memory consumption was 124.0 MB. Max. memory is 11.5 GB. [2018-11-23 00:26:39,586 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 00:26:39,586 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.21 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 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. [2018-11-23 00:26:39,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.45 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 00:26:39,587 INFO L168 Benchmark]: Boogie Preprocessor took 22.94 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. [2018-11-23 00:26:39,587 INFO L168 Benchmark]: RCFGBuilder took 970.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -178.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2018-11-23 00:26:39,587 INFO L168 Benchmark]: TraceAbstraction took 431467.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 973.1 MB in the end (delta: 137.8 MB). Peak memory consumption was 137.8 MB. Max. memory is 11.5 GB. [2018-11-23 00:26:39,588 INFO L168 Benchmark]: Witness Printer took 31.56 ms. Allocated memory is still 1.2 GB. Free memory was 973.1 MB in the beginning and 966.2 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-23 00:26:39,590 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 197.21 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 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 16.45 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.94 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. * RCFGBuilder took 970.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -178.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 431467.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 973.1 MB in the end (delta: 137.8 MB). Peak memory consumption was 137.8 MB. Max. memory is 11.5 GB. * Witness Printer took 31.56 ms. Allocated memory is still 1.2 GB. Free memory was 973.1 MB in the beginning and 966.2 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,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_14,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_14,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 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_14,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_14,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_14,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 * 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 [2018-11-23 00:26:39,594 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,597 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,597 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,597 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,597 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,597 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-23 00:26:39,597 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,598 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-23 00:26:39,598 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,598 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-23 00:26:39,598 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,598 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,598 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,599 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,599 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,599 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,599 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,599 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,600 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-23 00:26:39,600 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,600 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-23 00:26:39,600 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,600 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-11-23 00:26:39,600 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,600 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 00:26:39,601 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0) == x && x1 == ~fp.div~DOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) || ((\exists v_main_~x~0_14 : C_DOUBLE :: !~fp.eq~DOUBLE(~fp.div~DOUBLE(~roundNearestTiesToEven, v_main_~x~0_14, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)), v_main_~x~0_14) && ~fp.div~DOUBLE(~roundNearestTiesToEven, v_main_~x~0_14, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)) == 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, 431.4s OverallTime, 4 OverallIterations, 7 TraceHistogramMax, 57.3s AutomataDifference, 0.0s DeadEndRemovalTime, 95.8s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 2 SDslu, 120 SDs, 0 SdLazy, 58 SolverSat, 7 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 25.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 161.9s 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, 12 PreInvPairs, 22 NumberOfFragments, 84 HoareAnnotationTreeSize, 12 FomulaSimplifications, 431 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 253 FormulaSimplificationTreeSizeReductionInter, 95.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 69.9s SatisfiabilityAnalysisTime, 201.1s InterpolantComputationTime, 94 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 71 ConstructedInterpolants, 5 QuantifiedInterpolants, 9252 SizeOfPredicates, 13 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 27/50 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...