./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.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 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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 0.1.23-1dbac8b [2018-10-26 22:58:09,723 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:58:09,725 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:58:09,737 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:58:09,737 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:58:09,738 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:58:09,739 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:58:09,740 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:58:09,744 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:58:09,744 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:58:09,745 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:58:09,745 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:58:09,746 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:58:09,747 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:58:09,748 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:58:09,751 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:58:09,752 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:58:09,753 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:58:09,755 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:58:09,756 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:58:09,765 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:58:09,767 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:58:09,769 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:58:09,769 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:58:09,769 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:58:09,770 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:58:09,771 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:58:09,771 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:58:09,773 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:58:09,774 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:58:09,775 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:58:09,776 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:58:09,776 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:58:09,776 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:58:09,779 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:58:09,780 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:58:09,781 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 22:58:09,795 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:58:09,796 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:58:09,797 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:58:09,797 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 22:58:09,798 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 22:58:09,798 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 22:58:09,798 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 22:58:09,799 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 22:58:09,799 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 22:58:09,799 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 22:58:09,799 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 22:58:09,800 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:58:09,800 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:58:09,800 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:58:09,801 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:58:09,801 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:58:09,801 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:58:09,801 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:58:09,801 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:58:09,801 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:58:09,801 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:58:09,801 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:58:09,802 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:58:09,802 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:58:09,802 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:58:09,802 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:58:09,802 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:58:09,802 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:58:09,802 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:58:09,803 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:58:09,803 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 22:58:09,803 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:58:09,803 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:58:09,803 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:58:09,803 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 044666208476da4ad4fcec9a18fadf3bde3ce58f [2018-10-26 22:58:09,832 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:58:09,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:58:09,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:58:09,854 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:58:09,854 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:58:09,855 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c [2018-10-26 22:58:09,903 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/data/9c04deffc/71438aa6c28748778870f948fb04fc4a/FLAGcf65f8fbd [2018-10-26 22:58:10,258 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:58:10,259 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c [2018-10-26 22:58:10,265 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/data/9c04deffc/71438aa6c28748778870f948fb04fc4a/FLAGcf65f8fbd [2018-10-26 22:58:10,276 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/data/9c04deffc/71438aa6c28748778870f948fb04fc4a [2018-10-26 22:58:10,278 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:58:10,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 22:58:10,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:58:10,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:58:10,284 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:58:10,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:58:10" (1/1) ... [2018-10-26 22:58:10,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ba8991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:10, skipping insertion in model container [2018-10-26 22:58:10,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:58:10" (1/1) ... [2018-10-26 22:58:10,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:58:10,313 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:58:10,442 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:58:10,447 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:58:10,466 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:58:10,478 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:58:10,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:10 WrapperNode [2018-10-26 22:58:10,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:58:10,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:58:10,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:58:10,480 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:58:10,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:10" (1/1) ... [2018-10-26 22:58:10,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:10" (1/1) ... [2018-10-26 22:58:10,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:58:10,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:58:10,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:58:10,498 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:58:10,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:10" (1/1) ... [2018-10-26 22:58:10,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:10" (1/1) ... [2018-10-26 22:58:10,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:10" (1/1) ... [2018-10-26 22:58:10,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:10" (1/1) ... [2018-10-26 22:58:10,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:10" (1/1) ... [2018-10-26 22:58:10,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:10" (1/1) ... [2018-10-26 22:58:10,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:10" (1/1) ... [2018-10-26 22:58:10,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:58:10,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:58:10,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:58:10,515 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:58:10,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:58:10,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:58:10,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:58:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-10-26 22:58:10,625 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-10-26 22:58:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:58:10,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:58:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:58:10,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:58:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 22:58:10,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 22:58:11,044 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:58:11,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:58:11 BoogieIcfgContainer [2018-10-26 22:58:11,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:58:11,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:58:11,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:58:11,048 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:58:11,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:58:10" (1/3) ... [2018-10-26 22:58:11,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4606d514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:58:11, skipping insertion in model container [2018-10-26 22:58:11,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:10" (2/3) ... [2018-10-26 22:58:11,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4606d514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:58:11, skipping insertion in model container [2018-10-26 22:58:11,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:58:11" (3/3) ... [2018-10-26 22:58:11,065 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval_true-unreach-call.c [2018-10-26 22:58:11,082 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:58:11,101 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:58:11,121 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:58:11,160 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:58:11,161 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:58:11,161 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:58:11,161 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:58:11,161 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:58:11,161 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:58:11,161 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:58:11,161 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:58:11,180 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-10-26 22:58:11,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-26 22:58:11,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:58:11,187 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:58:11,190 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:58:11,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:58:11,196 INFO L82 PathProgramCache]: Analyzing trace with hash 469878416, now seen corresponding path program 1 times [2018-10-26 22:58:11,198 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:58:11,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:58:11,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:58:11,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:58:11,246 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:58:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:58:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:58:11,330 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:58:11,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:58:11,330 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:58:11,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:58:11,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:58:11,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:58:11,351 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2018-10-26 22:58:11,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:58:11,373 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-10-26 22:58:11,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:58:11,374 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-10-26 22:58:11,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:58:11,383 INFO L225 Difference]: With dead ends: 44 [2018-10-26 22:58:11,383 INFO L226 Difference]: Without dead ends: 21 [2018-10-26 22:58:11,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:58:11,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-26 22:58:11,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-26 22:58:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-26 22:58:11,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-10-26 22:58:11,417 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2018-10-26 22:58:11,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:58:11,418 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-10-26 22:58:11,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:58:11,418 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-10-26 22:58:11,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 22:58:11,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:58:11,419 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:58:11,419 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:58:11,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:58:11,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1576115003, now seen corresponding path program 1 times [2018-10-26 22:58:11,420 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:58:11,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:58:11,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:58:11,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:58:11,421 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:58:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:58:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:58:11,471 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 22:58:11,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:58:11 BoogieIcfgContainer [2018-10-26 22:58:11,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:58:11,498 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 22:58:11,498 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 22:58:11,499 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 22:58:11,499 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:58:11" (3/4) ... [2018-10-26 22:58:11,503 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 22:58:11,503 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 22:58:11,504 INFO L168 Benchmark]: Toolchain (without parser) took 1225.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 955.8 MB in the beginning and 1.1 GB in the end (delta: -151.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:58:11,506 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 980.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:58:11,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 198.63 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 945.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:58:11,507 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.73 ms. Allocated memory is still 1.0 GB. Free memory was 945.1 MB in the beginning and 942.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:58:11,508 INFO L168 Benchmark]: Boogie Preprocessor took 17.15 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:58:11,508 INFO L168 Benchmark]: RCFGBuilder took 529.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -187.7 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2018-10-26 22:58:11,509 INFO L168 Benchmark]: TraceAbstraction took 452.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2018-10-26 22:58:11,510 INFO L168 Benchmark]: Witness Printer took 4.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:58:11,514 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 980.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 198.63 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 945.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.73 ms. Allocated memory is still 1.0 GB. Free memory was 945.1 MB in the beginning and 942.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.15 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 529.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -187.7 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 452.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 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 28, 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] RET return 1.0 / xnp1; VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L49] 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, 28 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 0.1.23-1dbac8b [2018-10-26 22:58:13,447 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:58:13,449 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:58:13,459 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:58:13,459 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:58:13,460 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:58:13,461 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:58:13,462 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:58:13,463 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:58:13,464 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:58:13,464 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:58:13,464 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:58:13,465 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:58:13,466 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:58:13,467 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:58:13,467 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:58:13,468 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:58:13,469 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:58:13,471 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:58:13,472 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:58:13,473 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:58:13,474 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:58:13,476 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:58:13,476 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:58:13,476 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:58:13,477 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:58:13,478 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:58:13,478 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:58:13,479 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:58:13,480 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:58:13,480 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:58:13,481 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:58:13,481 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:58:13,481 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:58:13,482 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:58:13,483 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:58:13,483 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-26 22:58:13,498 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:58:13,503 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:58:13,503 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:58:13,504 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 22:58:13,504 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 22:58:13,504 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 22:58:13,504 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 22:58:13,504 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 22:58:13,505 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:58:13,505 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:58:13,505 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:58:13,505 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:58:13,505 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:58:13,506 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:58:13,506 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:58:13,506 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 22:58:13,506 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 22:58:13,506 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:58:13,506 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:58:13,506 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:58:13,507 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:58:13,507 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:58:13,507 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:58:13,507 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:58:13,507 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:58:13,507 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:58:13,508 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:58:13,508 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:58:13,508 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 22:58:13,508 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:58:13,508 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 22:58:13,511 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 22:58:13,511 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_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 044666208476da4ad4fcec9a18fadf3bde3ce58f [2018-10-26 22:58:13,550 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:58:13,561 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:58:13,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:58:13,567 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:58:13,568 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:58:13,568 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c [2018-10-26 22:58:13,619 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/data/436dfa8b5/3b6382450e804ecd9060f166fb3aa6e7/FLAG8546e7f21 [2018-10-26 22:58:13,985 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:58:13,986 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c [2018-10-26 22:58:13,991 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/data/436dfa8b5/3b6382450e804ecd9060f166fb3aa6e7/FLAG8546e7f21 [2018-10-26 22:58:14,003 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/data/436dfa8b5/3b6382450e804ecd9060f166fb3aa6e7 [2018-10-26 22:58:14,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:58:14,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 22:58:14,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:58:14,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:58:14,015 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:58:14,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:58:14" (1/1) ... [2018-10-26 22:58:14,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4393425d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:14, skipping insertion in model container [2018-10-26 22:58:14,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:58:14" (1/1) ... [2018-10-26 22:58:14,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:58:14,049 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:58:14,242 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:58:14,251 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:58:14,278 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:58:14,292 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:58:14,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:14 WrapperNode [2018-10-26 22:58:14,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:58:14,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:58:14,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:58:14,294 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:58:14,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:14" (1/1) ... [2018-10-26 22:58:14,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:14" (1/1) ... [2018-10-26 22:58:14,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:58:14,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:58:14,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:58:14,320 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:58:14,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:14" (1/1) ... [2018-10-26 22:58:14,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:14" (1/1) ... [2018-10-26 22:58:14,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:14" (1/1) ... [2018-10-26 22:58:14,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:14" (1/1) ... [2018-10-26 22:58:14,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:14" (1/1) ... [2018-10-26 22:58:14,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:14" (1/1) ... [2018-10-26 22:58:14,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:14" (1/1) ... [2018-10-26 22:58:14,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:58:14,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:58:14,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:58:14,346 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:58:14,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:58:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:58:14,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:58:14,407 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-10-26 22:58:14,407 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-10-26 22:58:14,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:58:14,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:58:14,408 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:58:14,408 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:58:14,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 22:58:14,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 22:58:22,839 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:58:22,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:58:22 BoogieIcfgContainer [2018-10-26 22:58:22,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:58:22,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:58:22,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:58:22,843 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:58:22,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:58:14" (1/3) ... [2018-10-26 22:58:22,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a68aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:58:22, skipping insertion in model container [2018-10-26 22:58:22,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:14" (2/3) ... [2018-10-26 22:58:22,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a68aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:58:22, skipping insertion in model container [2018-10-26 22:58:22,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:58:22" (3/3) ... [2018-10-26 22:58:22,847 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval_true-unreach-call.c [2018-10-26 22:58:22,857 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:58:22,865 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:58:22,880 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:58:22,909 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:58:22,910 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:58:22,910 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:58:22,910 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:58:22,911 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:58:22,911 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:58:22,911 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:58:22,912 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:58:22,912 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:58:22,928 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-10-26 22:58:22,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-26 22:58:22,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:58:22,935 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:58:22,938 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:58:22,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:58:22,944 INFO L82 PathProgramCache]: Analyzing trace with hash 469878416, now seen corresponding path program 1 times [2018-10-26 22:58:22,948 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:58:22,949 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-10-26 22:58:22,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:58:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:58:24,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:58:24,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:58:24,417 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 22:58:24,442 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:58:24,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:58:24,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:58:24,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:58:24,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:58:24,459 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2018-10-26 22:58:24,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:58:24,480 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-10-26 22:58:24,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:58:24,482 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-10-26 22:58:24,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:58:24,491 INFO L225 Difference]: With dead ends: 44 [2018-10-26 22:58:24,491 INFO L226 Difference]: Without dead ends: 21 [2018-10-26 22:58:24,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:58:24,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-26 22:58:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-26 22:58:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-26 22:58:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-10-26 22:58:24,527 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2018-10-26 22:58:24,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:58:24,527 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-10-26 22:58:24,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:58:24,527 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-10-26 22:58:24,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 22:58:24,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:58:24,528 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:58:24,529 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:58:24,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:58:24,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1576115003, now seen corresponding path program 1 times [2018-10-26 22:58:24,529 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:58:24,530 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 22:58:24,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-10-26 22:58:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:58:25,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:58:37,217 WARN L179 SmtUtils]: Spent 8.61 s on a formula simplification. DAG size of input: 31 DAG size of output: 9 [2018-10-26 22:58:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:58:37,222 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 22:58:37,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:58:37,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 22:58:37,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:58:37,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:58:37,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:58:37,248 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2018-10-26 22:58:43,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:58:43,598 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-10-26 22:58:43,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 22:58:43,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-10-26 22:58:43,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:58:43,600 INFO L225 Difference]: With dead ends: 33 [2018-10-26 22:58:43,600 INFO L226 Difference]: Without dead ends: 24 [2018-10-26 22:58:43,601 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:58:43,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-26 22:58:43,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-26 22:58:43,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-26 22:58:43,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-10-26 22:58:43,607 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2018-10-26 22:58:43,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:58:43,607 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-10-26 22:58:43,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:58:43,608 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-10-26 22:58:43,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 22:58:43,608 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:58:43,608 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:58:43,608 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:58:43,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:58:43,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1317949565, now seen corresponding path program 1 times [2018-10-26 22:58:43,609 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:58:43,609 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_32925167-fef1-4cd5-b578-3ce97507455b/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-10-26 22:58:43,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:58:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:58:48,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:59:10,692 WARN L179 SmtUtils]: Spent 10.14 s on a formula simplification that was a NOOP. DAG size: 14 [2018-10-26 22:59:13,047 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (and (= (fp.div RNE .cse0 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse0)) (let ((.cse5 (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (let ((.cse3 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse5)) (.cse4 (fp.mul RNE c_~_EPS~0 .cse5))) (let ((.cse2 (fp.lt .cse3 (fp.neg .cse4))) (.cse1 (fp.gt .cse3 .cse4))) (or (and (not .cse1) (not .cse2) (= (_ bv0 32) c_SqrtR_~cond~0)) (and (or .cse2 .cse1) (= (_ bv1 32) c_SqrtR_~cond~0)))))))) is different from false [2018-10-26 22:59:15,191 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (and (= (fp.div RNE .cse0 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse0)) (let ((.cse5 (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (let ((.cse3 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse5)) (.cse4 (fp.mul RNE c_~_EPS~0 .cse5))) (let ((.cse2 (fp.lt .cse3 (fp.neg .cse4))) (.cse1 (fp.gt .cse3 .cse4))) (or (and (not .cse1) (not .cse2) (= (_ bv0 32) c_SqrtR_~cond~0)) (and (or .cse2 .cse1) (= (_ bv1 32) c_SqrtR_~cond~0)))))))) is different from true [2018-10-26 22:59:17,553 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (let ((.cse0 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse3)) (.cse1 (fp.mul RNE c_~_EPS~0 .cse3)) (.cse2 ((_ to_fp 11 53) RNE 1.0))) (and (not (fp.gt .cse0 .cse1)) (not (fp.lt .cse0 (fp.neg .cse1))) (= (fp.div RNE .cse2 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse2))))) is different from false [2018-10-26 22:59:20,148 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (let ((.cse0 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse3)) (.cse1 (fp.mul RNE c_~_EPS~0 .cse3)) (.cse2 ((_ to_fp 11 53) RNE 1.0))) (and (not (fp.gt .cse0 .cse1)) (not (fp.lt .cse0 (fp.neg .cse1))) (= (fp.div RNE .cse2 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse2))))) is different from true [2018-10-26 22:59:22,857 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse3 (fp.div RNE .cse2 |c_SqrtR_#in~Input|))) (let ((.cse4 (fp.add RNE .cse3 .cse3))) (let ((.cse0 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse4)) (.cse1 (fp.mul RNE c_~_EPS~0 .cse4))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (= (fp.div RNE .cse2 .cse3) |c_SqrtR_#res|) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse2)) (not (fp.gt .cse0 .cse1))))))) is different from false [2018-10-26 22:59:25,270 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse3 (fp.div RNE .cse2 |c_SqrtR_#in~Input|))) (let ((.cse4 (fp.add RNE .cse3 .cse3))) (let ((.cse0 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse4)) (.cse1 (fp.mul RNE c_~_EPS~0 .cse4))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (= (fp.div RNE .cse2 .cse3) |c_SqrtR_#res|) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse2)) (not (fp.gt .cse0 .cse1))))))) is different from true [2018-10-26 22:59:27,947 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.div RNE .cse0 main_~d~0))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse5 (fp.add RNE .cse1 .cse1))) (let ((.cse2 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse4) .cse5)) (.cse3 (fp.mul RNE .cse4 .cse5))) (and (fp.leq main_~d~0 ((_ to_fp 11 53) RNE 20.0)) (not (fp.leq main_~d~0 .cse0)) (= |c_main_#t~ret2| (fp.div RNE .cse0 .cse1)) (fp.geq main_~d~0 ((_ to_fp 11 53) RNE (/ 1.0 10.0))) (not (fp.lt .cse2 (fp.neg .cse3))) (not (fp.gt .cse2 .cse3)))))))) is different from false [2018-10-26 22:59:30,501 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.div RNE .cse0 main_~d~0))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse5 (fp.add RNE .cse1 .cse1))) (let ((.cse2 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse4) .cse5)) (.cse3 (fp.mul RNE .cse4 .cse5))) (and (fp.leq main_~d~0 ((_ to_fp 11 53) RNE 20.0)) (not (fp.leq main_~d~0 .cse0)) (= |c_main_#t~ret2| (fp.div RNE .cse0 .cse1)) (fp.geq main_~d~0 ((_ to_fp 11 53) RNE (/ 1.0 10.0))) (not (fp.lt .cse2 (fp.neg .cse3))) (not (fp.gt .cse2 .cse3)))))))) is different from true [2018-10-26 22:59:33,162 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.div RNE .cse0 main_~d~0))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse5 (fp.add RNE .cse1 .cse1))) (let ((.cse2 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse4) .cse5)) (.cse3 (fp.mul RNE .cse4 .cse5))) (and (fp.leq main_~d~0 ((_ to_fp 11 53) RNE 20.0)) (not (fp.leq main_~d~0 .cse0)) (fp.geq main_~d~0 ((_ to_fp 11 53) RNE (/ 1.0 10.0))) (= (fp.div RNE .cse0 .cse1) c_main_~r~0) (not (fp.lt .cse2 (fp.neg .cse3))) (not (fp.gt .cse2 .cse3)))))))) is different from false [2018-10-26 22:59:35,701 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.div RNE .cse0 main_~d~0))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse5 (fp.add RNE .cse1 .cse1))) (let ((.cse2 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse4) .cse5)) (.cse3 (fp.mul RNE .cse4 .cse5))) (and (fp.leq main_~d~0 ((_ to_fp 11 53) RNE 20.0)) (not (fp.leq main_~d~0 .cse0)) (fp.geq main_~d~0 ((_ to_fp 11 53) RNE (/ 1.0 10.0))) (= (fp.div RNE .cse0 .cse1) c_main_~r~0) (not (fp.lt .cse2 (fp.neg .cse3))) (not (fp.gt .cse2 .cse3)))))))) is different from true [2018-10-26 22:59:56,710 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-10-26 22:59:56,911 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2018-10-26 22:59:56,912 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:234) 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:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) 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:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) 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 [2018-10-26 22:59:56,915 INFO L168 Benchmark]: Toolchain (without parser) took 102908.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.1 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -149.7 MB). Peak memory consumption was 47.4 MB. Max. memory is 11.5 GB. [2018-10-26 22:59:56,923 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:59:56,923 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.77 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:59:56,924 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.51 ms. Allocated memory is still 1.0 GB. Free memory was 943.8 MB in the beginning and 938.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 22:59:56,925 INFO L168 Benchmark]: Boogie Preprocessor took 25.32 ms. Allocated memory is still 1.0 GB. Free memory is still 938.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:59:56,925 INFO L168 Benchmark]: RCFGBuilder took 8493.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.1 MB). Free memory was 938.5 MB in the beginning and 1.2 GB in the end (delta: -232.4 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. [2018-10-26 22:59:56,925 INFO L168 Benchmark]: TraceAbstraction took 94074.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 66.5 MB). Peak memory consumption was 66.5 MB. Max. memory is 11.5 GB. [2018-10-26 22:59:56,928 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 281.77 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 943.8 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 26.51 ms. Allocated memory is still 1.0 GB. Free memory was 943.8 MB in the beginning and 938.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.32 ms. Allocated memory is still 1.0 GB. Free memory is still 938.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 8493.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.1 MB). Free memory was 938.5 MB in the beginning and 1.2 GB in the end (delta: -232.4 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 94074.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 66.5 MB). Peak memory consumption was 66.5 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...