./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 044666208476da4ad4fcec9a18fadf3bde3ce58f ........................................................................................................................................................................................................................................................................... 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_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 044666208476da4ad4fcec9a18fadf3bde3ce58f ................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 07:47:59,572 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 07:47:59,573 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 07:47:59,579 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 07:47:59,579 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 07:47:59,580 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 07:47:59,581 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 07:47:59,582 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 07:47:59,583 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 07:47:59,584 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 07:47:59,585 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 07:47:59,585 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 07:47:59,586 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 07:47:59,586 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 07:47:59,587 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 07:47:59,588 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 07:47:59,588 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 07:47:59,590 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 07:47:59,591 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 07:47:59,591 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 07:47:59,592 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 07:47:59,593 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 07:47:59,594 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 07:47:59,594 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 07:47:59,595 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 07:47:59,595 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 07:47:59,595 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 07:47:59,596 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 07:47:59,596 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 07:47:59,597 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 07:47:59,597 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 07:47:59,597 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 07:47:59,597 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 07:47:59,597 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 07:47:59,598 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 07:47:59,598 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 07:47:59,598 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-02 07:47:59,605 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 07:47:59,605 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 07:47:59,605 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 07:47:59,606 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 07:47:59,606 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 07:47:59,606 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 07:47:59,606 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 07:47:59,606 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 07:47:59,606 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 07:47:59,606 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 07:47:59,606 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 07:47:59,607 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 07:47:59,607 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 07:47:59,607 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 07:47:59,607 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 07:47:59,607 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 07:47:59,607 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 07:47:59,607 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 07:47:59,607 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 07:47:59,607 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 07:47:59,607 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 07:47:59,607 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 07:47:59,607 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 07:47:59,608 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 07:47:59,608 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 07:47:59,608 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 07:47:59,608 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 07:47:59,608 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 07:47:59,608 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 07:47:59,608 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 07:47:59,608 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_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer 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 -> Automizer 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 -> 044666208476da4ad4fcec9a18fadf3bde3ce58f [2018-12-02 07:47:59,631 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 07:47:59,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 07:47:59,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 07:47:59,642 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 07:47:59,642 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 07:47:59,642 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c [2018-12-02 07:47:59,680 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/data/7774b89e6/501e756aff174d759fc79d237728f165/FLAG113809585 [2018-12-02 07:48:00,085 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 07:48:00,086 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c [2018-12-02 07:48:00,089 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/data/7774b89e6/501e756aff174d759fc79d237728f165/FLAG113809585 [2018-12-02 07:48:00,097 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/data/7774b89e6/501e756aff174d759fc79d237728f165 [2018-12-02 07:48:00,099 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 07:48:00,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 07:48:00,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 07:48:00,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 07:48:00,102 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 07:48:00,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:48:00" (1/1) ... [2018-12-02 07:48:00,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@537737cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:00, skipping insertion in model container [2018-12-02 07:48:00,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:48:00" (1/1) ... [2018-12-02 07:48:00,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 07:48:00,118 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 07:48:00,204 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 07:48:00,207 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 07:48:00,218 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 07:48:00,226 INFO L195 MainTranslator]: Completed translation [2018-12-02 07:48:00,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:00 WrapperNode [2018-12-02 07:48:00,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 07:48:00,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 07:48:00,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 07:48:00,227 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 07:48:00,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:00" (1/1) ... [2018-12-02 07:48:00,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:00" (1/1) ... [2018-12-02 07:48:00,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 07:48:00,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 07:48:00,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 07:48:00,239 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 07:48:00,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:00" (1/1) ... [2018-12-02 07:48:00,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:00" (1/1) ... [2018-12-02 07:48:00,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:00" (1/1) ... [2018-12-02 07:48:00,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:00" (1/1) ... [2018-12-02 07:48:00,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:00" (1/1) ... [2018-12-02 07:48:00,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:00" (1/1) ... [2018-12-02 07:48:00,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:00" (1/1) ... [2018-12-02 07:48:00,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 07:48:00,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 07:48:00,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 07:48:00,280 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 07:48:00,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 07:48:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 07:48:00,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 07:48:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-12-02 07:48:00,310 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-12-02 07:48:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 07:48:00,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 07:48:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 07:48:00,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 07:48:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-02 07:48:00,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-02 07:48:00,402 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 07:48:00,402 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 07:48:00,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:48:00 BoogieIcfgContainer [2018-12-02 07:48:00,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 07:48:00,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 07:48:00,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 07:48:00,405 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 07:48:00,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:48:00" (1/3) ... [2018-12-02 07:48:00,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65495a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:48:00, skipping insertion in model container [2018-12-02 07:48:00,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:00" (2/3) ... [2018-12-02 07:48:00,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65495a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:48:00, skipping insertion in model container [2018-12-02 07:48:00,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:48:00" (3/3) ... [2018-12-02 07:48:00,407 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval_true-unreach-call.c [2018-12-02 07:48:00,413 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 07:48:00,418 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 07:48:00,427 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 07:48:00,444 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 07:48:00,445 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 07:48:00,445 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 07:48:00,445 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 07:48:00,445 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 07:48:00,445 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 07:48:00,446 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 07:48:00,446 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 07:48:00,446 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 07:48:00,456 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-12-02 07:48:00,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 07:48:00,460 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:48:00,460 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:48:00,462 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:48:00,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:48:00,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1096265462, now seen corresponding path program 1 times [2018-12-02 07:48:00,466 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 07:48:00,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 07:48:00,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 07:48:00,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:48:00,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 07:48:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 07:48:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 07:48:00,545 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 07:48:00,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:48:00 BoogieIcfgContainer [2018-12-02 07:48:00,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 07:48:00,562 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 07:48:00,562 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 07:48:00,562 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 07:48:00,563 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:48:00" (3/4) ... [2018-12-02 07:48:00,565 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 07:48:00,565 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 07:48:00,566 INFO L168 Benchmark]: Toolchain (without parser) took 466.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 76.0 MB). Free memory was 954.4 MB in the beginning and 1.0 GB in the end (delta: -82.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 07:48:00,567 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 07:48:00,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 125.97 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 07:48:00,567 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.26 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 07:48:00,568 INFO L168 Benchmark]: Boogie Preprocessor took 40.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 76.0 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -130.2 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-12-02 07:48:00,568 INFO L168 Benchmark]: RCFGBuilder took 123.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-12-02 07:48:00,569 INFO L168 Benchmark]: TraceAbstraction took 158.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2018-12-02 07:48:00,569 INFO L168 Benchmark]: Witness Printer took 3.13 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 07:48:00,571 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 125.97 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.26 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 76.0 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -130.2 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 123.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 158.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.13 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 51, overapproximation of someUnaryDOUBLEoperation at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 39. Possible FailurePath: [L17] double _EPS = 1e-6; VAL [\old(_EPS)=3, _EPS=1/1000000] [L44] double d, r; [L46] d = __VERIFIER_nondet_double() [L49] CALL, EXPR SqrtR(d) VAL [\old(Input)=2, _EPS=1/1000000] [L21] double xn, xnp1, residu, lsup, linf; [L22] int i, cond; VAL [\old(Input)=2, _EPS=1/1000000, Input=2] [L23] COND TRUE Input <= 1.0 [L23] xn = 1.0 VAL [\old(Input)=2, _EPS=1/1000000, Input=2, xn=1] [L24] xnp1 = xn [L25] residu = 2.0*_EPS*(xn+xnp1) [L26] lsup = _EPS * (xn+xnp1) [L27] linf = -lsup [L28] cond = ((residu > lsup) || (residu < linf)) [L29] i = 0 VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L30] COND FALSE !(\read(cond)) VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L39] return 1.0 / xnp1; VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L49] RET, EXPR SqrtR(d) VAL [_EPS=1/1000000, d=2, SqrtR(d)=4] [L49] r = SqrtR(d) [L51] CALL __VERIFIER_assert(r >= 0.3 && r <= 5.) VAL [\old(cond)=0, _EPS=1/1000000] [L15] COND TRUE !(cond) VAL [\old(cond)=0, _EPS=1/1000000, cond=0] [L15] __VERIFIER_error() VAL [\old(cond)=0, _EPS=1/1000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 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=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s 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, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-02 07:48:01,818 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 07:48:01,819 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 07:48:01,825 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 07:48:01,825 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 07:48:01,826 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 07:48:01,826 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 07:48:01,827 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 07:48:01,828 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 07:48:01,828 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 07:48:01,829 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 07:48:01,829 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 07:48:01,829 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 07:48:01,830 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 07:48:01,830 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 07:48:01,830 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 07:48:01,831 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 07:48:01,832 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 07:48:01,832 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 07:48:01,833 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 07:48:01,834 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 07:48:01,834 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 07:48:01,835 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 07:48:01,836 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 07:48:01,836 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 07:48:01,836 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 07:48:01,837 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 07:48:01,837 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 07:48:01,838 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 07:48:01,838 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 07:48:01,838 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 07:48:01,839 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 07:48:01,839 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 07:48:01,839 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 07:48:01,839 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 07:48:01,840 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 07:48:01,840 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-02 07:48:01,847 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 07:48:01,847 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 07:48:01,847 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 07:48:01,848 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 07:48:01,848 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 07:48:01,848 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 07:48:01,848 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 07:48:01,848 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 07:48:01,848 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 07:48:01,849 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 07:48:01,849 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 07:48:01,849 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 07:48:01,849 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 07:48:01,849 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 07:48:01,849 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 07:48:01,849 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 07:48:01,849 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 07:48:01,849 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 07:48:01,849 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 07:48:01,849 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 07:48:01,849 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 07:48:01,850 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 07:48:01,850 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 07:48:01,850 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 07:48:01,850 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 07:48:01,850 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 07:48:01,850 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 07:48:01,850 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 07:48:01,850 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-02 07:48:01,850 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 07:48:01,850 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 07:48:01,850 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 07:48:01,851 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_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer 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 -> Automizer 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 -> 044666208476da4ad4fcec9a18fadf3bde3ce58f [2018-12-02 07:48:01,869 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 07:48:01,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 07:48:01,881 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 07:48:01,882 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 07:48:01,883 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 07:48:01,883 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c [2018-12-02 07:48:01,925 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/data/ea65c20a2/0866a52c88f4428d98e3b25c8af007b4/FLAG5698544ab [2018-12-02 07:48:02,336 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 07:48:02,336 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c [2018-12-02 07:48:02,340 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/data/ea65c20a2/0866a52c88f4428d98e3b25c8af007b4/FLAG5698544ab [2018-12-02 07:48:02,348 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/data/ea65c20a2/0866a52c88f4428d98e3b25c8af007b4 [2018-12-02 07:48:02,350 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 07:48:02,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 07:48:02,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 07:48:02,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 07:48:02,353 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 07:48:02,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:48:02" (1/1) ... [2018-12-02 07:48:02,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25287d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:02, skipping insertion in model container [2018-12-02 07:48:02,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:48:02" (1/1) ... [2018-12-02 07:48:02,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 07:48:02,370 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 07:48:02,462 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 07:48:02,466 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 07:48:02,478 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 07:48:02,487 INFO L195 MainTranslator]: Completed translation [2018-12-02 07:48:02,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:02 WrapperNode [2018-12-02 07:48:02,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 07:48:02,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 07:48:02,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 07:48:02,488 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 07:48:02,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:02" (1/1) ... [2018-12-02 07:48:02,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:02" (1/1) ... [2018-12-02 07:48:02,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 07:48:02,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 07:48:02,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 07:48:02,502 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 07:48:02,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:02" (1/1) ... [2018-12-02 07:48:02,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:02" (1/1) ... [2018-12-02 07:48:02,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:02" (1/1) ... [2018-12-02 07:48:02,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:02" (1/1) ... [2018-12-02 07:48:02,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:02" (1/1) ... [2018-12-02 07:48:02,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:02" (1/1) ... [2018-12-02 07:48:02,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:02" (1/1) ... [2018-12-02 07:48:02,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 07:48:02,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 07:48:02,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 07:48:02,519 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 07:48:02,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 07:48:02,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 07:48:02,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 07:48:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-12-02 07:48:02,584 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-12-02 07:48:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 07:48:02,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 07:48:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 07:48:02,584 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 07:48:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-02 07:48:02,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-02 07:48:10,323 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 07:48:10,323 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 07:48:10,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:48:10 BoogieIcfgContainer [2018-12-02 07:48:10,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 07:48:10,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 07:48:10,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 07:48:10,326 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 07:48:10,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:48:02" (1/3) ... [2018-12-02 07:48:10,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462f49bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:48:10, skipping insertion in model container [2018-12-02 07:48:10,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:48:02" (2/3) ... [2018-12-02 07:48:10,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462f49bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:48:10, skipping insertion in model container [2018-12-02 07:48:10,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:48:10" (3/3) ... [2018-12-02 07:48:10,328 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval_true-unreach-call.c [2018-12-02 07:48:10,334 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 07:48:10,339 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 07:48:10,348 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 07:48:10,365 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 07:48:10,365 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 07:48:10,365 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 07:48:10,365 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 07:48:10,366 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 07:48:10,366 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 07:48:10,366 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 07:48:10,366 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 07:48:10,366 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 07:48:10,375 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-12-02 07:48:10,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 07:48:10,378 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:48:10,379 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:48:10,380 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:48:10,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:48:10,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1096265462, now seen corresponding path program 1 times [2018-12-02 07:48:10,385 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:48:10,386 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-02 07:48:10,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:48:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:48:11,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:48:17,269 WARN L180 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 31 DAG size of output: 9 [2018-12-02 07:48:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 07:48:17,273 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 07:48:17,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:48:17,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 07:48:17,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 07:48:17,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 07:48:17,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-02 07:48:17,306 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2018-12-02 07:48:23,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:48:23,489 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2018-12-02 07:48:23,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 07:48:23,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-02 07:48:23,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:48:23,495 INFO L225 Difference]: With dead ends: 45 [2018-12-02 07:48:23,495 INFO L226 Difference]: Without dead ends: 22 [2018-12-02 07:48:23,497 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-02 07:48:23,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-02 07:48:23,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-12-02 07:48:23,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-02 07:48:23,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-12-02 07:48:23,519 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 19 [2018-12-02 07:48:23,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:48:23,519 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-12-02 07:48:23,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 07:48:23,519 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-12-02 07:48:23,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 07:48:23,520 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:48:23,520 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:48:23,520 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:48:23,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:48:23,520 INFO L82 PathProgramCache]: Analyzing trace with hash -395200884, now seen corresponding path program 1 times [2018-12-02 07:48:23,521 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:48:23,521 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-02 07:48:23,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:48:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:48:27,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:48:50,152 WARN L180 SmtUtils]: Spent 10.65 s on a formula simplification that was a NOOP. DAG size: 14 [2018-12-02 07:48:52,485 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (not (fp.leq |c_SqrtR_#in~Input| .cse0)) (let ((.cse5 (let ((.cse6 (fp.div roundNearestTiesToEven .cse0 |c_SqrtR_#in~Input|))) (fp.add roundNearestTiesToEven .cse6 .cse6)))) (let ((.cse3 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) c_~_EPS~0) .cse5)) (.cse4 (fp.mul roundNearestTiesToEven c_~_EPS~0 .cse5))) (let ((.cse2 (fp.gt .cse3 .cse4)) (.cse1 (fp.lt .cse3 (fp.neg .cse4)))) (or (and (not .cse1) (not .cse2) (= (_ bv0 32) c_SqrtR_~cond~0)) (and (or .cse2 .cse1) (= (_ bv1 32) c_SqrtR_~cond~0)))))) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))))) is different from false [2018-12-02 07:48:54,849 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (not (fp.leq |c_SqrtR_#in~Input| .cse0)) (let ((.cse5 (let ((.cse6 (fp.div roundNearestTiesToEven .cse0 |c_SqrtR_#in~Input|))) (fp.add roundNearestTiesToEven .cse6 .cse6)))) (let ((.cse3 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) c_~_EPS~0) .cse5)) (.cse4 (fp.mul roundNearestTiesToEven c_~_EPS~0 .cse5))) (let ((.cse2 (fp.gt .cse3 .cse4)) (.cse1 (fp.lt .cse3 (fp.neg .cse4)))) (or (and (not .cse1) (not .cse2) (= (_ bv0 32) c_SqrtR_~cond~0)) (and (or .cse2 .cse1) (= (_ bv1 32) c_SqrtR_~cond~0)))))) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))))) is different from true [2018-12-02 07:48:57,179 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (let ((.cse4 (fp.div roundNearestTiesToEven .cse2 |c_SqrtR_#in~Input|))) (fp.add roundNearestTiesToEven .cse4 .cse4)))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) c_~_EPS~0) .cse3)) (.cse1 (fp.mul roundNearestTiesToEven c_~_EPS~0 .cse3))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.leq |c_SqrtR_#in~Input| .cse2)) (not (fp.gt .cse0 .cse1)) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))))))) is different from false [2018-12-02 07:48:59,543 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (let ((.cse4 (fp.div roundNearestTiesToEven .cse2 |c_SqrtR_#in~Input|))) (fp.add roundNearestTiesToEven .cse4 .cse4)))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) c_~_EPS~0) .cse3)) (.cse1 (fp.mul roundNearestTiesToEven c_~_EPS~0 .cse3))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.leq |c_SqrtR_#in~Input| .cse2)) (not (fp.gt .cse0 .cse1)) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))))))) is different from true [2018-12-02 07:49:06,550 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse4 (let ((.cse5 (fp.div roundNearestTiesToEven .cse2 main_~d~0))) (fp.add roundNearestTiesToEven .cse5 .cse5)))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse3) .cse4)) (.cse1 (fp.mul roundNearestTiesToEven .cse3 .cse4))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (fp.geq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (not (fp.leq main_~d~0 .cse2)) (not (fp.gt .cse0 .cse1)) (fp.leq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven 20.0))))))) is different from false [2018-12-02 07:49:08,829 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse4 (let ((.cse5 (fp.div roundNearestTiesToEven .cse2 main_~d~0))) (fp.add roundNearestTiesToEven .cse5 .cse5)))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse3) .cse4)) (.cse1 (fp.mul roundNearestTiesToEven .cse3 .cse4))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (fp.geq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (not (fp.leq main_~d~0 .cse2)) (not (fp.gt .cse0 .cse1)) (fp.leq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven 20.0))))))) is different from true [2018-12-02 07:49:27,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 07:49:27,524 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 07:49:27,553 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:49:27,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 07:49:27,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 07:49:27,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 07:49:27,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=18, Unknown=6, NotChecked=30, Total=72 [2018-12-02 07:49:27,554 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 9 states. [2018-12-02 07:49:56,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:49:56,494 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2018-12-02 07:49:56,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 07:49:56,496 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-12-02 07:49:56,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:49:56,497 INFO L225 Difference]: With dead ends: 32 [2018-12-02 07:49:56,497 INFO L226 Difference]: Without dead ends: 23 [2018-12-02 07:49:56,497 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 36.5s TimeCoverageRelationStatistics Valid=18, Invalid=18, Unknown=6, NotChecked=30, Total=72 [2018-12-02 07:49:56,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-02 07:49:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-12-02 07:49:56,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-02 07:49:56,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-12-02 07:49:56,501 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2018-12-02 07:49:56,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:49:56,501 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-12-02 07:49:56,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 07:49:56,502 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-12-02 07:49:56,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-02 07:49:56,502 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:49:56,502 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:49:56,502 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:49:56,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:49:56,502 INFO L82 PathProgramCache]: Analyzing trace with hash -552102720, now seen corresponding path program 1 times [2018-12-02 07:49:56,503 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:49:56,503 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04863582-ac39-461d-b824-35ec09e4b89e/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-02 07:49:56,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:50:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:50:04,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:50:06,560 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (= (fp.div roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 15.0) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven |c_SqrtR_#in~Input| .cse0) .cse0) (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 3.0) |c_SqrtR_#in~Input|) .cse0) .cse0))))) ((_ to_fp 11 53) roundNearestTiesToEven 8.0)) c_SqrtR_~xnp1~0) (let ((.cse3 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) (fp.sub roundNearestTiesToEven c_SqrtR_~xnp1~0 .cse0))) (.cse4 (fp.mul roundNearestTiesToEven c_~_EPS~0 (fp.add roundNearestTiesToEven c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0)))) (let ((.cse2 (fp.gt .cse3 .cse4)) (.cse1 (fp.lt .cse3 (fp.neg .cse4)))) (or (and (not .cse1) (= (_ bv0 32) c_SqrtR_~cond~0) (not .cse2)) (and (or .cse2 .cse1) (= (_ bv1 32) c_SqrtR_~cond~0))))) (fp.leq |c_SqrtR_#in~Input| .cse0) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))))) is different from false [2018-12-02 07:50:08,613 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (= (fp.div roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 15.0) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven |c_SqrtR_#in~Input| .cse0) .cse0) (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 3.0) |c_SqrtR_#in~Input|) .cse0) .cse0))))) ((_ to_fp 11 53) roundNearestTiesToEven 8.0)) c_SqrtR_~xnp1~0) (let ((.cse3 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) (fp.sub roundNearestTiesToEven c_SqrtR_~xnp1~0 .cse0))) (.cse4 (fp.mul roundNearestTiesToEven c_~_EPS~0 (fp.add roundNearestTiesToEven c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0)))) (let ((.cse2 (fp.gt .cse3 .cse4)) (.cse1 (fp.lt .cse3 (fp.neg .cse4)))) (or (and (not .cse1) (= (_ bv0 32) c_SqrtR_~cond~0) (not .cse2)) (and (or .cse2 .cse1) (= (_ bv1 32) c_SqrtR_~cond~0))))) (fp.leq |c_SqrtR_#in~Input| .cse0) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))))) is different from true [2018-12-02 07:50:10,787 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) (fp.sub roundNearestTiesToEven c_SqrtR_~xnp1~0 .cse0))) (.cse2 (fp.mul roundNearestTiesToEven c_~_EPS~0 (fp.add roundNearestTiesToEven c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0)))) (and (= (fp.div roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 15.0) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven |c_SqrtR_#in~Input| .cse0) .cse0) (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 3.0) |c_SqrtR_#in~Input|) .cse0) .cse0))))) ((_ to_fp 11 53) roundNearestTiesToEven 8.0)) c_SqrtR_~xnp1~0) (fp.leq |c_SqrtR_#in~Input| .cse0) (not (fp.lt .cse1 (fp.neg .cse2))) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (not (fp.gt .cse1 .cse2))))) is different from false [2018-12-02 07:50:12,950 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) (fp.sub roundNearestTiesToEven c_SqrtR_~xnp1~0 .cse0))) (.cse2 (fp.mul roundNearestTiesToEven c_~_EPS~0 (fp.add roundNearestTiesToEven c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0)))) (and (= (fp.div roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 15.0) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven |c_SqrtR_#in~Input| .cse0) .cse0) (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 3.0) |c_SqrtR_#in~Input|) .cse0) .cse0))))) ((_ to_fp 11 53) roundNearestTiesToEven 8.0)) c_SqrtR_~xnp1~0) (fp.leq |c_SqrtR_#in~Input| .cse0) (not (fp.lt .cse1 (fp.neg .cse2))) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (not (fp.gt .cse1 .cse2))))) is different from true [2018-12-02 07:50:15,393 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 15.0) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven |c_SqrtR_#in~Input| .cse2) .cse2) (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 3.0) |c_SqrtR_#in~Input|) .cse2) .cse2))))) ((_ to_fp 11 53) roundNearestTiesToEven 8.0)))) (let ((.cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) (fp.sub roundNearestTiesToEven .cse3 .cse2))) (.cse1 (fp.mul roundNearestTiesToEven c_~_EPS~0 (fp.add roundNearestTiesToEven .cse3 .cse3)))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (fp.leq |c_SqrtR_#in~Input| .cse2) (= (fp.div roundNearestTiesToEven .cse2 .cse3) |c_SqrtR_#res|) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (not (fp.gt .cse0 .cse1)))))) is different from false [2018-12-02 07:50:17,574 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 15.0) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven |c_SqrtR_#in~Input| .cse2) .cse2) (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 3.0) |c_SqrtR_#in~Input|) .cse2) .cse2))))) ((_ to_fp 11 53) roundNearestTiesToEven 8.0)))) (let ((.cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) (fp.sub roundNearestTiesToEven .cse3 .cse2))) (.cse1 (fp.mul roundNearestTiesToEven c_~_EPS~0 (fp.add roundNearestTiesToEven .cse3 .cse3)))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (fp.leq |c_SqrtR_#in~Input| .cse2) (= (fp.div roundNearestTiesToEven .cse2 .cse3) |c_SqrtR_#res|) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (not (fp.gt .cse0 .cse1)))))) is different from true [2018-12-02 07:50:20,030 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 15.0) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven main_~d~0 .cse2) .cse2) (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 3.0) main_~d~0) .cse2) .cse2))))) ((_ to_fp 11 53) roundNearestTiesToEven 8.0)))) (let ((.cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) (fp.sub roundNearestTiesToEven .cse3 .cse2))) (.cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0)) (fp.add roundNearestTiesToEven .cse3 .cse3)))) (and (fp.geq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (not (fp.gt .cse0 .cse1)) (fp.leq main_~d~0 .cse2) (fp.leq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (= |c_main_#t~ret2| (fp.div roundNearestTiesToEven .cse2 .cse3)) (not (fp.lt .cse0 (fp.neg .cse1)))))))) is different from false [2018-12-02 07:50:22,383 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 15.0) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven main_~d~0 .cse2) .cse2) (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 3.0) main_~d~0) .cse2) .cse2))))) ((_ to_fp 11 53) roundNearestTiesToEven 8.0)))) (let ((.cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) (fp.sub roundNearestTiesToEven .cse3 .cse2))) (.cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0)) (fp.add roundNearestTiesToEven .cse3 .cse3)))) (and (fp.geq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (not (fp.gt .cse0 .cse1)) (fp.leq main_~d~0 .cse2) (fp.leq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (= |c_main_#t~ret2| (fp.div roundNearestTiesToEven .cse2 .cse3)) (not (fp.lt .cse0 (fp.neg .cse1)))))))) is different from true [2018-12-02 07:50:24,826 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 15.0) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven main_~d~0 .cse2) .cse2) (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 3.0) main_~d~0) .cse2) .cse2))))) ((_ to_fp 11 53) roundNearestTiesToEven 8.0)))) (let ((.cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) (fp.sub roundNearestTiesToEven .cse3 .cse2))) (.cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0)) (fp.add roundNearestTiesToEven .cse3 .cse3)))) (and (fp.geq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (not (fp.gt .cse0 .cse1)) (fp.leq main_~d~0 .cse2) (fp.leq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (= c_main_~r~0 (fp.div roundNearestTiesToEven .cse2 .cse3)) (not (fp.lt .cse0 (fp.neg .cse1)))))))) is different from false [2018-12-02 07:50:27,186 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 15.0) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven main_~d~0 .cse2) .cse2) (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 3.0) main_~d~0) .cse2) .cse2))))) ((_ to_fp 11 53) roundNearestTiesToEven 8.0)))) (let ((.cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) (fp.sub roundNearestTiesToEven .cse3 .cse2))) (.cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0)) (fp.add roundNearestTiesToEven .cse3 .cse3)))) (and (fp.geq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (not (fp.gt .cse0 .cse1)) (fp.leq main_~d~0 .cse2) (fp.leq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (= c_main_~r~0 (fp.div roundNearestTiesToEven .cse2 .cse3)) (not (fp.lt .cse0 (fp.neg .cse1)))))))) is different from true [2018-12-02 07:50:46,179 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-02 07:50:46,381 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2018-12-02 07:50:46,382 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:823) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 39 more [2018-12-02 07:50:46,386 INFO L168 Benchmark]: Toolchain (without parser) took 164035.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -60.4 MB). Peak memory consumption was 67.5 MB. Max. memory is 11.5 GB. [2018-12-02 07:50:46,387 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 07:50:46,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 136.22 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-02 07:50:46,388 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.00 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 07:50:46,389 INFO L168 Benchmark]: Boogie Preprocessor took 16.89 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 07:50:46,389 INFO L168 Benchmark]: RCFGBuilder took 7804.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -168.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2018-12-02 07:50:46,390 INFO L168 Benchmark]: TraceAbstraction took 156060.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 90.9 MB). Peak memory consumption was 90.9 MB. Max. memory is 11.5 GB. [2018-12-02 07:50:46,394 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 136.22 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.00 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.89 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 7804.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -168.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 156060.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 90.9 MB). Peak memory consumption was 90.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...