./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c --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_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/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 5d57b69a18e01217b153b00cc1c03d5a7a42828b ............................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/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 5d57b69a18e01217b153b00cc1c03d5a7a42828b .................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 11:52:25,384 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 11:52:25,385 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 11:52:25,393 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 11:52:25,393 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 11:52:25,394 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 11:52:25,395 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 11:52:25,396 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 11:52:25,398 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 11:52:25,398 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 11:52:25,399 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 11:52:25,399 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 11:52:25,400 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 11:52:25,401 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 11:52:25,402 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 11:52:25,402 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 11:52:25,403 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 11:52:25,404 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 11:52:25,406 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 11:52:25,407 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 11:52:25,408 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 11:52:25,408 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 11:52:25,410 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 11:52:25,411 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 11:52:25,411 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 11:52:25,411 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 11:52:25,412 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 11:52:25,413 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 11:52:25,414 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 11:52:25,415 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 11:52:25,415 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 11:52:25,415 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 11:52:25,415 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 11:52:25,416 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 11:52:25,416 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 11:52:25,417 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 11:52:25,417 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 11:52:25,428 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 11:52:25,428 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 11:52:25,429 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 11:52:25,429 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 11:52:25,429 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 11:52:25,429 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 11:52:25,429 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 11:52:25,429 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 11:52:25,429 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 11:52:25,429 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 11:52:25,429 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 11:52:25,429 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 11:52:25,430 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 11:52:25,430 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 11:52:25,430 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 11:52:25,430 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 11:52:25,430 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 11:52:25,431 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 11:52:25,431 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 11:52:25,431 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 11:52:25,431 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 11:52:25,431 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 11:52:25,431 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 11:52:25,431 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 11:52:25,431 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 11:52:25,432 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 11:52:25,432 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 11:52:25,432 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 11:52:25,432 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 11:52:25,432 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 11:52:25,432 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 11:52:25,432 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 11:52:25,432 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 11:52:25,432 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 11:52:25,432 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 11:52:25,433 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 11:52:25,433 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 11:52:25,433 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_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/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 -> 5d57b69a18e01217b153b00cc1c03d5a7a42828b [2018-11-23 11:52:25,455 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 11:52:25,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 11:52:25,474 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 11:52:25,474 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 11:52:25,475 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 11:52:25,475 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-11-23 11:52:25,509 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/data/111c361f6/5871f5bcfc024fb9b25403ca73a7623b/FLAG32aedf813 [2018-11-23 11:52:25,851 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 11:52:25,851 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-11-23 11:52:25,856 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/data/111c361f6/5871f5bcfc024fb9b25403ca73a7623b/FLAG32aedf813 [2018-11-23 11:52:26,269 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/data/111c361f6/5871f5bcfc024fb9b25403ca73a7623b [2018-11-23 11:52:26,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 11:52:26,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 11:52:26,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 11:52:26,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 11:52:26,274 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 11:52:26,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:52:26" (1/1) ... [2018-11-23 11:52:26,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5871550a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:26, skipping insertion in model container [2018-11-23 11:52:26,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:52:26" (1/1) ... [2018-11-23 11:52:26,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 11:52:26,292 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 11:52:26,392 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:52:26,395 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 11:52:26,404 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:52:26,412 INFO L195 MainTranslator]: Completed translation [2018-11-23 11:52:26,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:26 WrapperNode [2018-11-23 11:52:26,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 11:52:26,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 11:52:26,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 11:52:26,413 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 11:52:26,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:26" (1/1) ... [2018-11-23 11:52:26,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:26" (1/1) ... [2018-11-23 11:52:26,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 11:52:26,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 11:52:26,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 11:52:26,426 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 11:52:26,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:26" (1/1) ... [2018-11-23 11:52:26,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:26" (1/1) ... [2018-11-23 11:52:26,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:26" (1/1) ... [2018-11-23 11:52:26,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:26" (1/1) ... [2018-11-23 11:52:26,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:26" (1/1) ... [2018-11-23 11:52:26,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:26" (1/1) ... [2018-11-23 11:52:26,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:26" (1/1) ... [2018-11-23 11:52:26,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 11:52:26,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 11:52:26,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 11:52:26,440 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 11:52:26,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/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 11:52:26,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 11:52:26,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 11:52:26,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 11:52:26,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 11:52:26,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 11:52:26,526 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 11:52:26,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 11:52:26,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 11:52:26,630 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 11:52:26,630 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 11:52:26,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:52:26 BoogieIcfgContainer [2018-11-23 11:52:26,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 11:52:26,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 11:52:26,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 11:52:26,634 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 11:52:26,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:52:26" (1/3) ... [2018-11-23 11:52:26,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0c1595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:52:26, skipping insertion in model container [2018-11-23 11:52:26,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:26" (2/3) ... [2018-11-23 11:52:26,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0c1595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:52:26, skipping insertion in model container [2018-11-23 11:52:26,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:52:26" (3/3) ... [2018-11-23 11:52:26,637 INFO L112 eAbstractionObserver]: Analyzing ICFG loop_true-unreach-call.c [2018-11-23 11:52:26,643 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 11:52:26,648 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 11:52:26,660 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 11:52:26,688 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 11:52:26,688 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 11:52:26,688 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 11:52:26,688 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 11:52:26,688 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 11:52:26,688 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 11:52:26,688 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 11:52:26,689 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 11:52:26,703 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-23 11:52:26,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 11:52:26,708 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:52:26,709 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:52:26,711 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 11:52:26,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:52:26,716 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-11-23 11:52:26,718 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 11:52:26,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:52:26,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:52:26,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:52:26,755 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 11:52:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:52:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:52:26,797 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(); [?] havoc ~x~0;havoc ~y~0;havoc ~z~0;~x~0 := 1.0;~y~0 := 1.0E7;~z~0 := 42.0; VAL [main_~x~0=1.0, main_~y~0=10000000.0, main_~z~0=42.0] [?] assume !~someBinaryFLOATComparisonOperation(~x~0, ~y~0); VAL [main_~x~0=1.0, main_~y~0=10000000.0, main_~z~0=42.0] [?] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~z~0, 0.0) && ~someBinaryDOUBLEComparisonOperation(~z~0, 1.0E8) 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(); [L6] havoc ~x~0; [L6] havoc ~y~0; [L6] havoc ~z~0; [L8] ~x~0 := 1.0; [L9] ~y~0 := 1.0E7; [L10] ~z~0 := 42.0; VAL [~x~0=1.0, ~y~0=1.0E7, ~z~0=42.0] [L12-L16] assume !~someBinaryFLOATComparisonOperation(~x~0, ~y~0); VAL [~x~0=1.0, ~y~0=1.0E7, ~z~0=42.0] [L18] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~z~0, 0.0) && ~someBinaryDOUBLEComparisonOperation(~z~0, 1.0E8) 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(); [L6] havoc ~x~0; [L6] havoc ~y~0; [L6] havoc ~z~0; [L8] ~x~0 := 1.0; [L9] ~y~0 := 1.0E7; [L10] ~z~0 := 42.0; VAL [~x~0=1.0, ~y~0=1.0E7, ~z~0=42.0] [L12-L16] assume !~someBinaryFLOATComparisonOperation(~x~0, ~y~0); VAL [~x~0=1.0, ~y~0=1.0E7, ~z~0=42.0] [L18] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~z~0, 0.0) && ~someBinaryDOUBLEComparisonOperation(~z~0, 1.0E8) 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(); [L6] havoc ~x~0; [L6] havoc ~y~0; [L6] havoc ~z~0; [L8] ~x~0 := 1.0; [L9] ~y~0 := 1.0E7; [L10] ~z~0 := 42.0; VAL [~x~0=1.0, ~y~0=1.0E7, ~z~0=42.0] [L12-L16] COND TRUE !~someBinaryFLOATComparisonOperation(~x~0, ~y~0) VAL [~x~0=1.0, ~y~0=1.0E7, ~z~0=42.0] [L18] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~z~0, 0.0) && ~someBinaryDOUBLEComparisonOperation(~z~0, 1.0E8) 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(); [L6] havoc ~x~0; [L6] havoc ~y~0; [L6] havoc ~z~0; [L8] ~x~0 := 1.0; [L9] ~y~0 := 1.0E7; [L10] ~z~0 := 42.0; VAL [~x~0=1.0, ~y~0=1.0E7, ~z~0=42.0] [L12-L16] COND TRUE !~someBinaryFLOATComparisonOperation(~x~0, ~y~0) VAL [~x~0=1.0, ~y~0=1.0E7, ~z~0=42.0] [L18] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~z~0, 0.0) && ~someBinaryDOUBLEComparisonOperation(~z~0, 1.0E8) 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(); [L6] havoc ~x~0; [L6] havoc ~y~0; [L6] havoc ~z~0; [L8] ~x~0 := 1.0; [L9] ~y~0 := 1.0E7; [L10] ~z~0 := 42.0; VAL [~x~0=1.0, ~y~0=1.0E7, ~z~0=42.0] [L12-L16] COND TRUE !~someBinaryFLOATComparisonOperation(~x~0, ~y~0) VAL [~x~0=1.0, ~y~0=1.0E7, ~z~0=42.0] [L18] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~z~0, 0.0) && ~someBinaryDOUBLEComparisonOperation(~z~0, 1.0E8) 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(); [L6] havoc ~x~0; [L6] havoc ~y~0; [L6] havoc ~z~0; [L8] ~x~0 := 1.0; [L9] ~y~0 := 1.0E7; [L10] ~z~0 := 42.0; VAL [~x~0=1.0, ~y~0=1.0E7, ~z~0=42.0] [L12-L16] COND TRUE !~someBinaryFLOATComparisonOperation(~x~0, ~y~0) VAL [~x~0=1.0, ~y~0=1.0E7, ~z~0=42.0] [L18] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~z~0, 0.0) && ~someBinaryDOUBLEComparisonOperation(~z~0, 1.0E8) 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] [L6] float x, y, z; [L8] x = 1.f [L9] y = 1e7 [L10] z = 42.f VAL [x=1, y=10000000, z=42] [L12] COND FALSE !(x < y) VAL [x=1, y=10000000, z=42] [L18] CALL __VERIFIER_assert(z >= 0.f && z <= 1e8) 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 11:52:26,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:52:26 BoogieIcfgContainer [2018-11-23 11:52:26,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 11:52:26,816 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 11:52:26,817 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 11:52:26,817 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 11:52:26,817 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:52:26" (3/4) ... [2018-11-23 11:52:26,819 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 11:52:26,819 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 11:52:26,820 INFO L168 Benchmark]: Toolchain (without parser) took 549.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 961.8 MB in the beginning and 1.1 GB in the end (delta: -158.0 MB). Peak memory consumption was 2.9 MB. Max. memory is 11.5 GB. [2018-11-23 11:52:26,822 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 11:52:26,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.51 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 11:52:26,823 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.74 ms. Allocated memory is still 1.0 GB. Free memory was 951.1 MB in the beginning and 945.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 11:52:26,823 INFO L168 Benchmark]: Boogie Preprocessor took 14.22 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 11:52:26,824 INFO L168 Benchmark]: RCFGBuilder took 190.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -193.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-23 11:52:26,824 INFO L168 Benchmark]: TraceAbstraction took 185.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2018-11-23 11:52:26,825 INFO L168 Benchmark]: Witness Printer took 3.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 11:52:26,828 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.51 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.74 ms. Allocated memory is still 1.0 GB. Free memory was 951.1 MB in the beginning and 945.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.22 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 190.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -193.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 185.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12. Possible FailurePath: [L6] float x, y, z; [L8] x = 1.f [L9] y = 1e7 [L10] z = 42.f VAL [x=1, y=10000000, z=42] [L12] COND FALSE !(x < y) VAL [x=1, y=10000000, z=42] [L18] CALL __VERIFIER_assert(z >= 0.f && z <= 1e8) 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 11:52:28,233 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 11:52:28,234 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 11:52:28,241 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 11:52:28,241 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 11:52:28,242 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 11:52:28,243 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 11:52:28,244 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 11:52:28,245 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 11:52:28,246 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 11:52:28,246 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 11:52:28,246 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 11:52:28,247 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 11:52:28,248 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 11:52:28,248 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 11:52:28,249 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 11:52:28,250 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 11:52:28,251 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 11:52:28,253 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 11:52:28,254 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 11:52:28,255 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 11:52:28,256 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 11:52:28,257 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 11:52:28,258 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 11:52:28,258 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 11:52:28,258 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 11:52:28,259 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 11:52:28,260 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 11:52:28,261 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 11:52:28,261 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 11:52:28,261 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 11:52:28,262 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 11:52:28,262 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 11:52:28,262 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 11:52:28,263 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 11:52:28,264 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 11:52:28,264 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-23 11:52:28,275 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 11:52:28,275 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 11:52:28,276 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 11:52:28,276 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 11:52:28,276 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 11:52:28,276 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 11:52:28,276 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 11:52:28,276 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 11:52:28,276 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 11:52:28,276 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 11:52:28,277 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 11:52:28,277 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 11:52:28,277 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 11:52:28,277 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 11:52:28,277 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 11:52:28,277 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 11:52:28,277 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 11:52:28,278 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 11:52:28,278 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 11:52:28,278 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 11:52:28,278 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 11:52:28,278 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 11:52:28,278 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 11:52:28,278 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 11:52:28,278 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 11:52:28,279 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 11:52:28,279 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 11:52:28,279 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 11:52:28,279 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 11:52:28,279 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 11:52:28,279 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 11:52:28,279 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-23 11:52:28,280 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 11:52:28,280 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 11:52:28,280 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 11:52:28,280 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_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/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 -> 5d57b69a18e01217b153b00cc1c03d5a7a42828b [2018-11-23 11:52:28,308 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 11:52:28,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 11:52:28,320 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 11:52:28,321 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 11:52:28,321 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 11:52:28,322 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-11-23 11:52:28,364 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/data/b13ef4447/b5f3cd0ecfca40c682d7661cd8328b52/FLAGd533365b9 [2018-11-23 11:52:28,684 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 11:52:28,684 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-11-23 11:52:28,687 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/data/b13ef4447/b5f3cd0ecfca40c682d7661cd8328b52/FLAGd533365b9 [2018-11-23 11:52:29,123 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/data/b13ef4447/b5f3cd0ecfca40c682d7661cd8328b52 [2018-11-23 11:52:29,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 11:52:29,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 11:52:29,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 11:52:29,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 11:52:29,129 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 11:52:29,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:52:29" (1/1) ... [2018-11-23 11:52:29,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@706138e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:29, skipping insertion in model container [2018-11-23 11:52:29,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:52:29" (1/1) ... [2018-11-23 11:52:29,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 11:52:29,149 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 11:52:29,255 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:52:29,260 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 11:52:29,269 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:52:29,279 INFO L195 MainTranslator]: Completed translation [2018-11-23 11:52:29,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:29 WrapperNode [2018-11-23 11:52:29,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 11:52:29,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 11:52:29,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 11:52:29,280 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 11:52:29,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:29" (1/1) ... [2018-11-23 11:52:29,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:29" (1/1) ... [2018-11-23 11:52:29,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 11:52:29,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 11:52:29,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 11:52:29,293 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 11:52:29,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:29" (1/1) ... [2018-11-23 11:52:29,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:29" (1/1) ... [2018-11-23 11:52:29,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:29" (1/1) ... [2018-11-23 11:52:29,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:29" (1/1) ... [2018-11-23 11:52:29,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:29" (1/1) ... [2018-11-23 11:52:29,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:29" (1/1) ... [2018-11-23 11:52:29,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:29" (1/1) ... [2018-11-23 11:52:29,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 11:52:29,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 11:52:29,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 11:52:29,309 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 11:52:29,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/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 11:52:29,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 11:52:29,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 11:52:29,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 11:52:29,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 11:52:29,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 11:52:29,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 11:52:29,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 11:52:29,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 11:52:29,929 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 11:52:29,929 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 11:52:29,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:52:29 BoogieIcfgContainer [2018-11-23 11:52:29,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 11:52:29,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 11:52:29,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 11:52:29,932 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 11:52:29,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:52:29" (1/3) ... [2018-11-23 11:52:29,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e4de44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:52:29, skipping insertion in model container [2018-11-23 11:52:29,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:29" (2/3) ... [2018-11-23 11:52:29,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e4de44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:52:29, skipping insertion in model container [2018-11-23 11:52:29,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:52:29" (3/3) ... [2018-11-23 11:52:29,934 INFO L112 eAbstractionObserver]: Analyzing ICFG loop_true-unreach-call.c [2018-11-23 11:52:29,941 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 11:52:29,945 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 11:52:29,954 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 11:52:29,972 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 11:52:29,972 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 11:52:29,972 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 11:52:29,972 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 11:52:29,972 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 11:52:29,972 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 11:52:29,973 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 11:52:29,973 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 11:52:29,973 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 11:52:29,985 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-23 11:52:29,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 11:52:29,988 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:52:29,989 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:52:29,990 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 11:52:29,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:52:29,994 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-11-23 11:52:29,996 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-23 11:52:29,997 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/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 11:52:30,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:52:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:52:30,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:52:30,062 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 11:52:30,062 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 11:52:30,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 11:52:30,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 11:52:30,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 11:52:30,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 11:52:30,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 11:52:30,088 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-11-23 11:52:30,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:52:30,344 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-11-23 11:52:30,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 11:52:30,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-23 11:52:30,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 11:52:30,349 INFO L225 Difference]: With dead ends: 31 [2018-11-23 11:52:30,350 INFO L226 Difference]: Without dead ends: 12 [2018-11-23 11:52:30,352 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 11:52:30,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-23 11:52:30,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-23 11:52:30,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-23 11:52:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-23 11:52:30,373 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-23 11:52:30,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 11:52:30,374 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-23 11:52:30,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 11:52:30,374 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-23 11:52:30,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-23 11:52:30,374 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:52:30,374 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:52:30,375 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 11:52:30,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:52:30,375 INFO L82 PathProgramCache]: Analyzing trace with hash -429188558, now seen corresponding path program 1 times [2018-11-23 11:52:30,375 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-23 11:52:30,376 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/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 11:52:30,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:52:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:52:30,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:52:30,497 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 11:52:30,497 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 11:52:34,052 WARN L180 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-23 11:52:34,060 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 11:52:34,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 11:52:34,067 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/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 11:52:34,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:52:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:52:34,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:52:34,530 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 11:52:34,530 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 11:52:36,566 WARN L180 SmtUtils]: Spent 872.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-23 11:52:36,573 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 11:52:36,593 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-23 11:52:36,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4] total 7 [2018-11-23 11:52:36,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 11:52:36,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 11:52:36,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=23, Unknown=1, NotChecked=0, Total=42 [2018-11-23 11:52:36,595 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2018-11-23 11:52:43,605 WARN L180 SmtUtils]: Spent 3.00 s on a formula simplification that was a NOOP. DAG size: 10 [2018-11-23 11:52:46,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:52:46,134 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-11-23 11:52:46,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 11:52:46,135 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-11-23 11:52:46,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 11:52:46,135 INFO L225 Difference]: With dead ends: 20 [2018-11-23 11:52:46,135 INFO L226 Difference]: Without dead ends: 15 [2018-11-23 11:52:46,136 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=25, Invalid=29, Unknown=2, NotChecked=0, Total=56 [2018-11-23 11:52:46,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-23 11:52:46,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-23 11:52:46,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-23 11:52:46,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-23 11:52:46,140 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2018-11-23 11:52:46,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 11:52:46,140 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-23 11:52:46,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 11:52:46,140 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-23 11:52:46,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-23 11:52:46,141 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:52:46,141 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:52:46,141 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 11:52:46,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:52:46,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1090549245, now seen corresponding path program 2 times [2018-11-23 11:52:46,142 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-23 11:52:46,142 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/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 11:52:46,145 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-23 11:52:46,367 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 11:52:46,367 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 11:52:46,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:52:46,511 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 11:52:46,511 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 11:52:47,386 WARN L180 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-23 11:52:53,837 WARN L180 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 12 [2018-11-23 11:53:11,316 WARN L180 SmtUtils]: Spent 4.32 s on a formula simplification that was a NOOP. DAG size: 13 [2018-11-23 11:53:14,276 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven c_main_~z~0 .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 100000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from true [2018-11-23 11:53:16,294 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven c_main_~z~0 .cse1) .cse1) .cse1) .cse1)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 100000000.0)))) is different from false [2018-11-23 11:53:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 7 not checked. [2018-11-23 11:53:17,937 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 11:53:17,938 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/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 11:53:17,944 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 11:53:23,591 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 11:53:23,591 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 11:53:23,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:53:27,909 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 11:53:27,910 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 11:53:39,597 WARN L180 SmtUtils]: Spent 1.68 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-23 11:53:41,985 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (let ((.cse0 (fp.add roundNearestTiesToEven c_main_~x~0 .cse2)) (.cse1 (fp.sub roundNearestTiesToEven c_main_~y~0 .cse2))) (or (not (fp.lt .cse0 .cse1)) (fp.lt (fp.add roundNearestTiesToEven .cse0 .cse2) (fp.sub roundNearestTiesToEven .cse1 .cse2)) (not (fp.lt c_main_~x~0 c_main_~y~0))))) is different from true [2018-11-23 11:53:44,005 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (let ((.cse1 (fp.sub roundNearestTiesToEven c_main_~y~0 .cse3)) (.cse0 (fp.add roundNearestTiesToEven c_main_~x~0 .cse3))) (let ((.cse2 (fp.add roundNearestTiesToEven .cse0 .cse3)) (.cse4 (fp.sub roundNearestTiesToEven .cse1 .cse3))) (or (not (fp.lt .cse0 .cse1)) (fp.lt (fp.add roundNearestTiesToEven .cse2 .cse3) (fp.sub roundNearestTiesToEven .cse4 .cse3)) (not (fp.lt c_main_~x~0 c_main_~y~0)) (not (fp.lt .cse2 .cse4)))))) is different from false [2018-11-23 11:53:46,022 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (let ((.cse1 (fp.sub roundNearestTiesToEven c_main_~y~0 .cse3)) (.cse0 (fp.add roundNearestTiesToEven c_main_~x~0 .cse3))) (let ((.cse2 (fp.add roundNearestTiesToEven .cse0 .cse3)) (.cse4 (fp.sub roundNearestTiesToEven .cse1 .cse3))) (or (not (fp.lt .cse0 .cse1)) (fp.lt (fp.add roundNearestTiesToEven .cse2 .cse3) (fp.sub roundNearestTiesToEven .cse4 .cse3)) (not (fp.lt c_main_~x~0 c_main_~y~0)) (not (fp.lt .cse2 .cse4)))))) is different from true [2018-11-23 11:53:48,046 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (let ((.cse0 (fp.add roundNearestTiesToEven c_main_~x~0 .cse3)) (.cse1 (fp.sub roundNearestTiesToEven c_main_~y~0 .cse3))) (let ((.cse6 (fp.sub roundNearestTiesToEven .cse1 .cse3)) (.cse5 (fp.add roundNearestTiesToEven .cse0 .cse3))) (let ((.cse2 (fp.add roundNearestTiesToEven .cse5 .cse3)) (.cse4 (fp.sub roundNearestTiesToEven .cse6 .cse3))) (or (not (fp.lt .cse0 .cse1)) (fp.lt (fp.add roundNearestTiesToEven .cse2 .cse3) (fp.sub roundNearestTiesToEven .cse4 .cse3)) (not (fp.lt c_main_~x~0 c_main_~y~0)) (not (fp.lt .cse5 .cse6)) (not (fp.lt .cse2 .cse4))))))) is different from false [2018-11-23 11:53:50,067 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (let ((.cse0 (fp.add roundNearestTiesToEven c_main_~x~0 .cse3)) (.cse1 (fp.sub roundNearestTiesToEven c_main_~y~0 .cse3))) (let ((.cse6 (fp.sub roundNearestTiesToEven .cse1 .cse3)) (.cse5 (fp.add roundNearestTiesToEven .cse0 .cse3))) (let ((.cse2 (fp.add roundNearestTiesToEven .cse5 .cse3)) (.cse4 (fp.sub roundNearestTiesToEven .cse6 .cse3))) (or (not (fp.lt .cse0 .cse1)) (fp.lt (fp.add roundNearestTiesToEven .cse2 .cse3) (fp.sub roundNearestTiesToEven .cse4 .cse3)) (not (fp.lt c_main_~x~0 c_main_~y~0)) (not (fp.lt .cse5 .cse6)) (not (fp.lt .cse2 .cse4))))))) is different from true [2018-11-23 11:53:50,075 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 11:53:50,105 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-23 11:53:50,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7, 7] total 26 [2018-11-23 11:53:50,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-23 11:53:50,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-23 11:53:50,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=353, Unknown=9, NotChecked=210, Total=650 [2018-11-23 11:53:50,107 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 26 states. [2018-11-23 11:53:52,151 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven c_main_~z~0 .cse3) .cse3) .cse3) .cse3))) (and (= c_main_~z~0 ((_ to_fp 8 24) roundNearestTiesToEven 42.0)) (let ((.cse0 (fp.add roundNearestTiesToEven c_main_~x~0 .cse3)) (.cse1 (fp.sub roundNearestTiesToEven c_main_~y~0 .cse3))) (let ((.cse6 (fp.sub roundNearestTiesToEven .cse1 .cse3)) (.cse5 (fp.add roundNearestTiesToEven .cse0 .cse3))) (let ((.cse2 (fp.add roundNearestTiesToEven .cse5 .cse3)) (.cse4 (fp.sub roundNearestTiesToEven .cse6 .cse3))) (or (not (fp.lt .cse0 .cse1)) (fp.lt (fp.add roundNearestTiesToEven .cse2 .cse3) (fp.sub roundNearestTiesToEven .cse4 .cse3)) (not (fp.lt c_main_~x~0 c_main_~y~0)) (not (fp.lt .cse5 .cse6)) (not (fp.lt .cse2 .cse4)))))) (fp.geq .cse7 (_ +zero 8 24)) (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 10000000.0)) c_main_~y~0) (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse7) ((_ to_fp 11 53) roundNearestTiesToEven 100000000.0)) (= .cse3 c_main_~x~0)))) is different from true [2018-11-23 11:53:54,183 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (let ((.cse0 (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven c_main_~z~0 .cse4) .cse4) .cse4))) (and (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 100000000.0)) (let ((.cse2 (fp.sub roundNearestTiesToEven c_main_~y~0 .cse4)) (.cse1 (fp.add roundNearestTiesToEven c_main_~x~0 .cse4))) (let ((.cse3 (fp.add roundNearestTiesToEven .cse1 .cse4)) (.cse5 (fp.sub roundNearestTiesToEven .cse2 .cse4))) (or (not (fp.lt .cse1 .cse2)) (fp.lt (fp.add roundNearestTiesToEven .cse3 .cse4) (fp.sub roundNearestTiesToEven .cse5 .cse4)) (not (fp.lt c_main_~x~0 c_main_~y~0)) (not (fp.lt .cse3 .cse5))))) (fp.geq .cse0 (_ +zero 8 24)) (= (fp.add roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 42.0) .cse4) c_main_~z~0) (= c_main_~x~0 (fp.add roundNearestTiesToEven .cse4 .cse4)) (= (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 10000000.0)) .cse4) c_main_~y~0)))) is different from true [2018-11-23 11:53:57,083 WARN L180 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 31 DAG size of output: 21 [2018-11-23 11:54:37,029 WARN L180 SmtUtils]: Spent 18.13 s on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-11-23 11:55:02,953 WARN L180 SmtUtils]: Spent 13.09 s on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2018-11-23 11:55:20,494 WARN L180 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 15 DAG size of output: 9 [2018-11-23 11:56:12,085 WARN L180 SmtUtils]: Spent 29.81 s on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2018-11-23 11:56:16,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:56:16,232 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2018-11-23 11:56:16,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 11:56:16,232 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 14 [2018-11-23 11:56:16,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 11:56:16,233 INFO L225 Difference]: With dead ends: 21 [2018-11-23 11:56:16,233 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 11:56:16,234 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 189.7s TimeCoverageRelationStatistics Valid=159, Invalid=667, Unknown=14, NotChecked=420, Total=1260 [2018-11-23 11:56:16,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 11:56:16,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 11:56:16,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 11:56:16,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 11:56:16,235 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-11-23 11:56:16,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 11:56:16,235 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 11:56:16,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-23 11:56:16,235 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 11:56:16,235 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 11:56:16,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 11:56:36,324 WARN L180 SmtUtils]: Spent 20.02 s on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-11-23 11:57:19,398 WARN L180 SmtUtils]: Spent 43.07 s on a formula simplification. DAG size of input: 83 DAG size of output: 9 [2018-11-23 11:57:19,399 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 11:57:19,399 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 11:57:19,399 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 11:57:19,399 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 11:57:19,400 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 11:57:19,400 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 11:57:19,400 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 4 20) the Hoare annotation is: true [2018-11-23 11:57:19,400 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 4 20) no Hoare annotation was computed. [2018-11-23 11:57:19,400 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-23 11:57:19,400 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 4 20) no Hoare annotation was computed. [2018-11-23 11:57:19,400 INFO L444 ceAbstractionStarter]: At program point L12-2(lines 12 16) the Hoare annotation is: (and (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven main_~z~0) ((_ to_fp 11 53) roundNearestTiesToEven 100000000.0)) (fp.geq main_~z~0 (_ +zero 8 24))) [2018-11-23 11:57:19,401 INFO L444 ceAbstractionStarter]: At program point L12-3(lines 12 16) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (or (not (fp.lt main_~x~0 main_~y~0)) (fp.lt (fp.add roundNearestTiesToEven main_~x~0 .cse0) (fp.sub roundNearestTiesToEven main_~y~0 .cse0))) (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven (fp.add roundNearestTiesToEven main_~z~0 .cse0)) ((_ to_fp 11 53) roundNearestTiesToEven 100000000.0)) (fp.geq main_~z~0 (_ +zero 8 24)))) [2018-11-23 11:57:19,401 INFO L448 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2018-11-23 11:57:19,401 INFO L448 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2018-11-23 11:57:19,401 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2018-11-23 11:57:19,401 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2018-11-23 11:57:19,401 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2018-11-23 11:57:19,401 INFO L448 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2018-11-23 11:57:19,406 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 11:57:19,407 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 11:57:19,409 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 11:57:19,409 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 11:57:19,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:57:19 BoogieIcfgContainer [2018-11-23 11:57:19,410 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 11:57:19,411 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 11:57:19,411 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 11:57:19,411 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 11:57:19,411 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:52:29" (3/4) ... [2018-11-23 11:57:19,414 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 11:57:19,418 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 11:57:19,418 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 11:57:19,418 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-23 11:57:19,420 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-23 11:57:19,420 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 11:57:19,420 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 11:57:19,444 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_344cf0e1-f47e-4c9d-939d-aa7ac4002f3d/bin-2019/utaipan/witness.graphml [2018-11-23 11:57:19,444 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 11:57:19,445 INFO L168 Benchmark]: Toolchain (without parser) took 290318.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 948.6 MB in the beginning and 906.5 MB in the end (delta: 42.1 MB). Peak memory consumption was 170.1 MB. Max. memory is 11.5 GB. [2018-11-23 11:57:19,445 INFO L168 Benchmark]: CDTParser took 0.14 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 11:57:19,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.41 ms. Allocated memory is still 1.0 GB. Free memory was 948.6 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 11:57:19,446 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.23 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 11:57:19,446 INFO L168 Benchmark]: Boogie Preprocessor took 15.58 ms. Allocated memory is still 1.0 GB. Free memory is still 932.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 11:57:19,446 INFO L168 Benchmark]: RCFGBuilder took 620.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 932.5 MB in the beginning and 1.1 GB in the end (delta: -171.9 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2018-11-23 11:57:19,447 INFO L168 Benchmark]: TraceAbstraction took 289480.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 906.5 MB in the end (delta: 198.0 MB). Peak memory consumption was 198.0 MB. Max. memory is 11.5 GB. [2018-11-23 11:57:19,447 INFO L168 Benchmark]: Witness Printer took 33.27 ms. Allocated memory is still 1.2 GB. Free memory is still 906.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 11:57:19,449 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 152.41 ms. Allocated memory is still 1.0 GB. Free memory was 948.6 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.23 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.58 ms. Allocated memory is still 1.0 GB. Free memory is still 932.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 620.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 932.5 MB in the beginning and 1.1 GB in the end (delta: -171.9 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 289480.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 906.5 MB in the end (delta: 198.0 MB). Peak memory consumption was 198.0 MB. Max. memory is 11.5 GB. * Witness Printer took 33.27 ms. Allocated memory is still 1.2 GB. Free memory is still 906.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation 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 11:57:19,452 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 11:57:19,452 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 11:57:19,453 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-23 11:57:19,453 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ~fp.leq~DOUBLE(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, z), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E8)) && ~fp.geq~FLOAT(z, ~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 289.4s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 155.9s AutomataDifference, 0.0s DeadEndRemovalTime, 63.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 34 SDtfs, 3 SDslu, 130 SDs, 0 SdLazy, 75 SolverSat, 15 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 17.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 66 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 201.4s 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 18 NumberOfFragments, 50 HoareAnnotationTreeSize, 10 FomulaSimplifications, 26 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 585 FormulaSimplificationTreeSizeReductionInter, 63.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 6.3s SatisfiabilityAnalysisTime, 63.7s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 11141 SizeOfPredicates, 12 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 2/44 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...