./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant_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_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/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 3ac23ee9420d5573e041ab9b716895f5d3bb685f .............................................................................................................................................................................................................................................................................................................. 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_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/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 3ac23ee9420d5573e041ab9b716895f5d3bb685f ..................................................................................................................................................................................................................................................................................................................................................... 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 [2018-11-10 12:41:53,632 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 12:41:53,633 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 12:41:53,641 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 12:41:53,641 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 12:41:53,642 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 12:41:53,643 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 12:41:53,644 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 12:41:53,645 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 12:41:53,645 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 12:41:53,646 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 12:41:53,646 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 12:41:53,647 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 12:41:53,648 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 12:41:53,648 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 12:41:53,649 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 12:41:53,649 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 12:41:53,651 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 12:41:53,652 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 12:41:53,653 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 12:41:53,654 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 12:41:53,655 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 12:41:53,656 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 12:41:53,657 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 12:41:53,657 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 12:41:53,657 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 12:41:53,659 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 12:41:53,659 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 12:41:53,660 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 12:41:53,661 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 12:41:53,661 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 12:41:53,661 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 12:41:53,661 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 12:41:53,661 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 12:41:53,662 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 12:41:53,662 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 12:41:53,662 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 12:41:53,669 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 12:41:53,670 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 12:41:53,670 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 12:41:53,670 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 12:41:53,671 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 12:41:53,671 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 12:41:53,671 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 12:41:53,671 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 12:41:53,671 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 12:41:53,672 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 12:41:53,672 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 12:41:53,672 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 12:41:53,672 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 12:41:53,672 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 12:41:53,672 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 12:41:53,672 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 12:41:53,672 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 12:41:53,673 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 12:41:53,673 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 12:41:53,673 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 12:41:53,673 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 12:41:53,673 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 12:41:53,673 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 12:41:53,673 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 12:41:53,674 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 12:41:53,674 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 12:41:53,674 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 12:41:53,674 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 12:41:53,674 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 12:41:53,674 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_e3275ae8-5a61-4166-8a25-10b751585361/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 -> 3ac23ee9420d5573e041ab9b716895f5d3bb685f [2018-11-10 12:41:53,697 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 12:41:53,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 12:41:53,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 12:41:53,708 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 12:41:53,708 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 12:41:53,709 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant_true-unreach-call.c [2018-11-10 12:41:53,744 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/data/6089289a6/cd1cd63e7a434385bb69b3c9c7da6648/FLAGada300d9a [2018-11-10 12:41:54,144 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 12:41:54,145 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant_true-unreach-call.c [2018-11-10 12:41:54,148 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/data/6089289a6/cd1cd63e7a434385bb69b3c9c7da6648/FLAGada300d9a [2018-11-10 12:41:54,158 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/data/6089289a6/cd1cd63e7a434385bb69b3c9c7da6648 [2018-11-10 12:41:54,161 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 12:41:54,162 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 12:41:54,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 12:41:54,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 12:41:54,166 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 12:41:54,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:41:54" (1/1) ... [2018-11-10 12:41:54,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49481402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:54, skipping insertion in model container [2018-11-10 12:41:54,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:41:54" (1/1) ... [2018-11-10 12:41:54,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 12:41:54,187 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 12:41:54,288 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:41:54,290 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 12:41:54,304 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:41:54,314 INFO L193 MainTranslator]: Completed translation [2018-11-10 12:41:54,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:54 WrapperNode [2018-11-10 12:41:54,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 12:41:54,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 12:41:54,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 12:41:54,315 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 12:41:54,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:54" (1/1) ... [2018-11-10 12:41:54,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:54" (1/1) ... [2018-11-10 12:41:54,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:54" (1/1) ... [2018-11-10 12:41:54,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:54" (1/1) ... [2018-11-10 12:41:54,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:54" (1/1) ... [2018-11-10 12:41:54,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:54" (1/1) ... [2018-11-10 12:41:54,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:54" (1/1) ... [2018-11-10 12:41:54,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 12:41:54,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 12:41:54,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 12:41:54,337 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 12:41:54,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/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 [2018-11-10 12:41:54,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 12:41:54,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 12:41:54,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 12:41:54,412 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-11-10 12:41:54,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 12:41:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 12:41:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-10 12:41:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-10 12:41:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 12:41:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-11-10 12:41:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 12:41:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 12:41:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 12:41:54,561 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 12:41:54,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:41:54 BoogieIcfgContainer [2018-11-10 12:41:54,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 12:41:54,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 12:41:54,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 12:41:54,564 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 12:41:54,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:41:54" (1/3) ... [2018-11-10 12:41:54,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfae853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:41:54, skipping insertion in model container [2018-11-10 12:41:54,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:54" (2/3) ... [2018-11-10 12:41:54,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfae853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:41:54, skipping insertion in model container [2018-11-10 12:41:54,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:41:54" (3/3) ... [2018-11-10 12:41:54,566 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant_true-unreach-call.c [2018-11-10 12:41:54,572 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 12:41:54,577 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 12:41:54,586 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 12:41:54,606 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 12:41:54,607 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 12:41:54,607 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 12:41:54,607 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 12:41:54,607 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 12:41:54,607 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 12:41:54,607 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 12:41:54,607 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 12:41:54,607 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 12:41:54,619 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-10 12:41:54,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 12:41:54,623 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:41:54,624 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, 1] [2018-11-10 12:41:54,625 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:41:54,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:41:54,629 INFO L82 PathProgramCache]: Analyzing trace with hash 924932034, now seen corresponding path program 1 times [2018-11-10 12:41:54,630 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:41:54,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:41:54,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:41:54,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:41:54,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:41:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:41:54,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:41:54,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:41:54,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 12:41:54,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 12:41:54,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 12:41:54,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 12:41:54,728 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-11-10 12:41:54,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:41:54,747 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2018-11-10 12:41:54,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 12:41:54,748 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-10 12:41:54,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:41:54,755 INFO L225 Difference]: With dead ends: 56 [2018-11-10 12:41:54,755 INFO L226 Difference]: Without dead ends: 26 [2018-11-10 12:41:54,758 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 [2018-11-10 12:41:54,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-10 12:41:54,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-10 12:41:54,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-10 12:41:54,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-11-10 12:41:54,787 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2018-11-10 12:41:54,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:41:54,788 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-11-10 12:41:54,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 12:41:54,788 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-11-10 12:41:54,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 12:41:54,789 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:41:54,789 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, 1, 1] [2018-11-10 12:41:54,789 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:41:54,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:41:54,789 INFO L82 PathProgramCache]: Analyzing trace with hash 244023785, now seen corresponding path program 1 times [2018-11-10 12:41:54,789 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:41:54,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:41:54,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:41:54,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:41:54,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:41:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 12:41:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 12:41:54,824 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 12:41:54,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 12:41:54 BoogieIcfgContainer [2018-11-10 12:41:54,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 12:41:54,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 12:41:54,840 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 12:41:54,840 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 12:41:54,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:41:54" (3/4) ... [2018-11-10 12:41:54,844 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 12:41:54,844 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 12:41:54,844 INFO L168 Benchmark]: Toolchain (without parser) took 682.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 954.8 MB in the beginning and 1.1 GB in the end (delta: -162.8 MB). Peak memory consumption was 237.5 kB. Max. memory is 11.5 GB. [2018-11-10 12:41:54,846 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:41:54,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 151.32 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 943.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-10 12:41:54,847 INFO L168 Benchmark]: Boogie Preprocessor took 22.08 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:41:54,847 INFO L168 Benchmark]: RCFGBuilder took 224.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 940.4 MB in the beginning and 1.1 GB in the end (delta: -208.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:41:54,848 INFO L168 Benchmark]: TraceAbstraction took 278.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2018-11-10 12:41:54,849 INFO L168 Benchmark]: Witness Printer took 3.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:41:54,851 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 151.32 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 943.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.08 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 224.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 940.4 MB in the beginning and 1.1 GB in the end (delta: -208.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 278.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.95 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: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 21, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 32. Possible FailurePath: [L10] double _EPS = 1e-6; VAL [\old(_EPS)=3, _EPS=1/1000000] [L37] double d, dd, r; [L38] double epsilon = 1e-8; [L40] d = 1. VAL [_EPS=1/1000000, d=1, epsilon=1/100000000] [L40] COND TRUE d <= 20. [L42] dd = __VERIFIER_nondet_double() [L45] CALL, EXPR SqrtR(dd) VAL [\old(Input)=2, _EPS=1/1000000] [L14] double xn, xnp1, residu, lsup, linf; [L15] int i, cond; VAL [\old(Input)=2, _EPS=1/1000000, Input=2] [L16] COND TRUE Input <= 1.0 [L16] xn = 1.0 VAL [\old(Input)=2, _EPS=1/1000000, Input=2, xn=1] [L17] xnp1 = xn [L18] residu = 2.0*_EPS*(xn+xnp1) [L19] lsup = _EPS * (xn+xnp1) [L20] linf = -lsup [L21] cond = ((residu > lsup) || (residu < linf)) [L22] i = 0 VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L23] COND FALSE !(\read(cond)) VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L32] RET return 1.0 / xnp1; VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L45] EXPR SqrtR(dd) VAL [_EPS=1/1000000, d=2, d=1, epsilon=1/100000000, SqrtR(dd)=4] [L45] r = SqrtR(dd) [L47] CALL __VERIFIER_assert(r >= 0.9 && r <= 5.) VAL [\old(cond)=0, _EPS=1/1000000] [L8] COND TRUE !(cond) VAL [\old(cond)=0, _EPS=1/1000000, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, _EPS=1/1000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 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=31occurred 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, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 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 [2018-11-10 12:41:56,281 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 12:41:56,283 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 12:41:56,291 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 12:41:56,291 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 12:41:56,292 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 12:41:56,293 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 12:41:56,294 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 12:41:56,295 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 12:41:56,295 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 12:41:56,296 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 12:41:56,296 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 12:41:56,297 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 12:41:56,297 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 12:41:56,298 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 12:41:56,298 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 12:41:56,299 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 12:41:56,300 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 12:41:56,301 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 12:41:56,302 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 12:41:56,303 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 12:41:56,304 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 12:41:56,305 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 12:41:56,306 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 12:41:56,306 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 12:41:56,306 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 12:41:56,307 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 12:41:56,308 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 12:41:56,308 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 12:41:56,309 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 12:41:56,309 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 12:41:56,309 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 12:41:56,310 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 12:41:56,310 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 12:41:56,310 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 12:41:56,311 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 12:41:56,311 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-10 12:41:56,320 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 12:41:56,321 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 12:41:56,321 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 12:41:56,321 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 12:41:56,322 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 12:41:56,322 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 12:41:56,322 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 12:41:56,322 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 12:41:56,322 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 12:41:56,323 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 12:41:56,323 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 12:41:56,323 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 12:41:56,323 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 12:41:56,323 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 12:41:56,323 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 12:41:56,323 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 12:41:56,323 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 12:41:56,324 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 12:41:56,324 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 12:41:56,324 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 12:41:56,324 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 12:41:56,324 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 12:41:56,324 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 12:41:56,324 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 12:41:56,325 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 12:41:56,325 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 12:41:56,325 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 12:41:56,325 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-10 12:41:56,325 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 12:41:56,325 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 12:41:56,325 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 12:41:56,325 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_e3275ae8-5a61-4166-8a25-10b751585361/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 -> 3ac23ee9420d5573e041ab9b716895f5d3bb685f [2018-11-10 12:41:56,355 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 12:41:56,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 12:41:56,367 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 12:41:56,368 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 12:41:56,368 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 12:41:56,369 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant_true-unreach-call.c [2018-11-10 12:41:56,412 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/data/ef75cfadc/426eea1b1f064c699c7f9fd5e1b55cdd/FLAG9c33243da [2018-11-10 12:41:56,810 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 12:41:56,811 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant_true-unreach-call.c [2018-11-10 12:41:56,814 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/data/ef75cfadc/426eea1b1f064c699c7f9fd5e1b55cdd/FLAG9c33243da [2018-11-10 12:41:56,826 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/bin-2019/uautomizer/data/ef75cfadc/426eea1b1f064c699c7f9fd5e1b55cdd [2018-11-10 12:41:56,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 12:41:56,828 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 12:41:56,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 12:41:56,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 12:41:56,832 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 12:41:56,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:41:56" (1/1) ... [2018-11-10 12:41:56,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d0734d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:56, skipping insertion in model container [2018-11-10 12:41:56,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:41:56" (1/1) ... [2018-11-10 12:41:56,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 12:41:56,854 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 12:41:56,970 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:41:56,973 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 12:41:56,990 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:41:57,002 INFO L193 MainTranslator]: Completed translation [2018-11-10 12:41:57,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:57 WrapperNode [2018-11-10 12:41:57,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 12:41:57,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 12:41:57,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 12:41:57,004 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 12:41:57,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:57" (1/1) ... [2018-11-10 12:41:57,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:57" (1/1) ... [2018-11-10 12:41:57,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:57" (1/1) ... [2018-11-10 12:41:57,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:57" (1/1) ... [2018-11-10 12:41:57,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:57" (1/1) ... [2018-11-10 12:41:57,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:57" (1/1) ... [2018-11-10 12:41:57,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:57" (1/1) ... [2018-11-10 12:41:57,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 12:41:57,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 12:41:57,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 12:41:57,030 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 12:41:57,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/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 [2018-11-10 12:41:57,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 12:41:57,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 12:41:57,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 12:41:57,064 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-11-10 12:41:57,064 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 12:41:57,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 12:41:57,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-10 12:41:57,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-10 12:41:57,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 12:41:57,064 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-11-10 12:41:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 12:41:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 12:41:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 12:42:06,620 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 12:42:06,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:42:06 BoogieIcfgContainer [2018-11-10 12:42:06,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 12:42:06,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 12:42:06,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 12:42:06,623 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 12:42:06,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:41:56" (1/3) ... [2018-11-10 12:42:06,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af30e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:42:06, skipping insertion in model container [2018-11-10 12:42:06,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:41:57" (2/3) ... [2018-11-10 12:42:06,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af30e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:42:06, skipping insertion in model container [2018-11-10 12:42:06,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:42:06" (3/3) ... [2018-11-10 12:42:06,626 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant_true-unreach-call.c [2018-11-10 12:42:06,634 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 12:42:06,638 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 12:42:06,650 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 12:42:06,675 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 12:42:06,675 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 12:42:06,676 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 12:42:06,676 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 12:42:06,676 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 12:42:06,676 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 12:42:06,676 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 12:42:06,676 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 12:42:06,676 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 12:42:06,686 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-10 12:42:06,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 12:42:06,690 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:42:06,690 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, 1] [2018-11-10 12:42:06,692 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:42:06,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:42:06,695 INFO L82 PathProgramCache]: Analyzing trace with hash 924932034, now seen corresponding path program 1 times [2018-11-10 12:42:06,698 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 12:42:06,698 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/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 [2018-11-10 12:42:06,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:42:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:42:08,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:42:08,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:42:08,048 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 12:42:08,073 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:42:08,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 12:42:08,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 12:42:08,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 12:42:08,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 12:42:08,087 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-11-10 12:42:08,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:42:08,102 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2018-11-10 12:42:08,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 12:42:08,103 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-10 12:42:08,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:42:08,109 INFO L225 Difference]: With dead ends: 56 [2018-11-10 12:42:08,109 INFO L226 Difference]: Without dead ends: 26 [2018-11-10 12:42:08,111 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 12:42:08,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-10 12:42:08,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-10 12:42:08,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-10 12:42:08,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-11-10 12:42:08,134 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2018-11-10 12:42:08,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:42:08,134 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-11-10 12:42:08,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 12:42:08,134 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-11-10 12:42:08,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 12:42:08,135 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:42:08,135 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, 1, 1] [2018-11-10 12:42:08,135 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:42:08,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:42:08,136 INFO L82 PathProgramCache]: Analyzing trace with hash 244023785, now seen corresponding path program 1 times [2018-11-10 12:42:08,136 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 12:42:08,136 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/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 [2018-11-10 12:42:08,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:42:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:42:09,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:42:18,522 WARN L179 SmtUtils]: Spent 7.53 s on a formula simplification. DAG size of input: 31 DAG size of output: 9 [2018-11-10 12:42:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:42:18,527 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 12:42:18,550 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:42:18,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 12:42:18,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 12:42:18,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 12:42:18,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-10 12:42:18,552 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2018-11-10 12:42:25,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:42:25,937 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2018-11-10 12:42:25,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 12:42:25,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-10 12:42:25,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:42:25,939 INFO L225 Difference]: With dead ends: 49 [2018-11-10 12:42:25,939 INFO L226 Difference]: Without dead ends: 29 [2018-11-10 12:42:25,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-10 12:42:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-10 12:42:25,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-11-10 12:42:25,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-10 12:42:25,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-11-10 12:42:25,943 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2018-11-10 12:42:25,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:42:25,944 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-11-10 12:42:25,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 12:42:25,944 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-11-10 12:42:25,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 12:42:25,944 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:42:25,945 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, 1, 1] [2018-11-10 12:42:25,945 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:42:25,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:42:25,945 INFO L82 PathProgramCache]: Analyzing trace with hash 502189223, now seen corresponding path program 1 times [2018-11-10 12:42:25,945 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 12:42:25,945 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e3275ae8-5a61-4166-8a25-10b751585361/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 [2018-11-10 12:42:25,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:42:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:42:29,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:42:58,776 WARN L179 SmtUtils]: Spent 14.00 s on a formula simplification that was a NOOP. DAG size: 14 [2018-11-10 12:43:01,147 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse3 (= (_ bv1 32) c_SqrtR_~cond~0)) (.cse4 (let ((.cse6 (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (fp.gt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse6) (fp.mul RNE c_~_EPS~0 .cse6)))) (.cse0 (= (fp.div RNE .cse5 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0)) (.cse1 (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0)) (.cse2 (not (fp.leq |c_SqrtR_#in~Input| .cse5)))) (or (and .cse0 .cse1 (exists ((v_prenex_2 (_ FloatingPoint 11 53))) (fp.lt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0)) v_prenex_2)) .cse2 .cse3) (and .cse0 .cse4 .cse1 .cse2 .cse3) (and (not .cse4) .cse0 (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0)) SqrtR_~linf~0))) (= (_ bv0 32) c_SqrtR_~cond~0) .cse1 .cse2)))) is different from false [2018-11-10 12:43:03,221 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse3 (= (_ bv1 32) c_SqrtR_~cond~0)) (.cse4 (let ((.cse6 (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (fp.gt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse6) (fp.mul RNE c_~_EPS~0 .cse6)))) (.cse0 (= (fp.div RNE .cse5 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0)) (.cse1 (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0)) (.cse2 (not (fp.leq |c_SqrtR_#in~Input| .cse5)))) (or (and .cse0 .cse1 (exists ((v_prenex_2 (_ FloatingPoint 11 53))) (fp.lt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0)) v_prenex_2)) .cse2 .cse3) (and .cse0 .cse4 .cse1 .cse2 .cse3) (and (not .cse4) .cse0 (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0)) SqrtR_~linf~0))) (= (_ bv0 32) c_SqrtR_~cond~0) .cse1 .cse2)))) is different from true [2018-11-10 12:43:05,574 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE 1.0))) (and (not (let ((.cse0 (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (fp.gt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse0) (fp.mul RNE c_~_EPS~0 .cse0)))) (= (fp.div RNE .cse1 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0) (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0)) SqrtR_~linf~0))) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse1)))) is different from false [2018-11-10 12:43:07,646 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE 1.0))) (and (not (let ((.cse0 (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (fp.gt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse0) (fp.mul RNE c_~_EPS~0 .cse0)))) (= (fp.div RNE .cse1 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0) (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0)) SqrtR_~linf~0))) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse1)))) is different from true [2018-11-10 12:43:10,265 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.div RNE .cse0 |c_SqrtR_#in~Input|))) (and (= (fp.div RNE .cse0 .cse1) |c_SqrtR_#res|) (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) (let ((.cse2 (fp.div RNE ((_ to_fp 11 53) RNE 1.0) |c_SqrtR_#in~Input|))) (fp.add RNE .cse2 .cse2))) SqrtR_~linf~0))) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse0)) (not (let ((.cse3 (fp.add RNE .cse1 .cse1))) (fp.gt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse3) (fp.mul RNE c_~_EPS~0 .cse3))))))) is different from false [2018-11-10 12:43:12,683 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.div RNE .cse0 |c_SqrtR_#in~Input|))) (and (= (fp.div RNE .cse0 .cse1) |c_SqrtR_#res|) (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) (let ((.cse2 (fp.div RNE ((_ to_fp 11 53) RNE 1.0) |c_SqrtR_#in~Input|))) (fp.add RNE .cse2 .cse2))) SqrtR_~linf~0))) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse0)) (not (let ((.cse3 (fp.add RNE .cse1 .cse1))) (fp.gt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse3) (fp.mul RNE c_~_EPS~0 .cse3))))))) is different from true [2018-11-10 12:43:15,324 WARN L832 $PredicateComparison]: unable to prove that (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53)) (main_~dd~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse3 (fp.div RNE .cse0 main_~dd~0))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse5 (fp.add RNE .cse3 .cse3))) (let ((.cse2 ((_ to_fp 11 53) RNE (/ 1.0 100000000.0))) (.cse1 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse4) .cse5))) (and (not (fp.leq main_~dd~0 .cse0)) (not (fp.lt .cse1 SqrtR_~linf~0)) (fp.geq main_~dd~0 (fp.sub RNE .cse0 .cse2)) (fp.leq main_~dd~0 (fp.add RNE .cse0 .cse2)) (= |c_main_#t~ret3| (fp.div RNE .cse0 .cse3)) (not (fp.gt .cse1 (fp.mul RNE .cse4 .cse5))))))))) is different from false [2018-11-10 12:43:17,852 WARN L854 $PredicateComparison]: unable to prove that (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53)) (main_~dd~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse3 (fp.div RNE .cse0 main_~dd~0))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse5 (fp.add RNE .cse3 .cse3))) (let ((.cse2 ((_ to_fp 11 53) RNE (/ 1.0 100000000.0))) (.cse1 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse4) .cse5))) (and (not (fp.leq main_~dd~0 .cse0)) (not (fp.lt .cse1 SqrtR_~linf~0)) (fp.geq main_~dd~0 (fp.sub RNE .cse0 .cse2)) (fp.leq main_~dd~0 (fp.add RNE .cse0 .cse2)) (= |c_main_#t~ret3| (fp.div RNE .cse0 .cse3)) (not (fp.gt .cse1 (fp.mul RNE .cse4 .cse5))))))))) is different from true [2018-11-10 12:43:20,482 WARN L832 $PredicateComparison]: unable to prove that (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53)) (main_~dd~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.div RNE .cse0 main_~dd~0))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse5 (fp.add RNE .cse1 .cse1))) (let ((.cse3 ((_ to_fp 11 53) RNE (/ 1.0 100000000.0))) (.cse2 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse4) .cse5))) (and (not (fp.leq main_~dd~0 .cse0)) (= (fp.div RNE .cse0 .cse1) c_main_~r~0) (not (fp.lt .cse2 SqrtR_~linf~0)) (fp.geq main_~dd~0 (fp.sub RNE .cse0 .cse3)) (fp.leq main_~dd~0 (fp.add RNE .cse0 .cse3)) (not (fp.gt .cse2 (fp.mul RNE .cse4 .cse5))))))))) is different from false [2018-11-10 12:43:23,060 WARN L854 $PredicateComparison]: unable to prove that (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53)) (main_~dd~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.div RNE .cse0 main_~dd~0))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse5 (fp.add RNE .cse1 .cse1))) (let ((.cse3 ((_ to_fp 11 53) RNE (/ 1.0 100000000.0))) (.cse2 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse4) .cse5))) (and (not (fp.leq main_~dd~0 .cse0)) (= (fp.div RNE .cse0 .cse1) c_main_~r~0) (not (fp.lt .cse2 SqrtR_~linf~0)) (fp.geq main_~dd~0 (fp.sub RNE .cse0 .cse3)) (fp.leq main_~dd~0 (fp.add RNE .cse0 .cse3)) (not (fp.gt .cse2 (fp.mul RNE .cse4 .cse5))))))))) is different from true [2018-11-10 12:43:43,935 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-11-10 12:43:44,136 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2018-11-10 12:43:44,137 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 [2018-11-10 12:43:44,139 INFO L168 Benchmark]: Toolchain (without parser) took 107311.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 953.2 MB in the beginning and 1.0 GB in the end (delta: -47.8 MB). Peak memory consumption was 58.6 MB. Max. memory is 11.5 GB. [2018-11-10 12:43:44,140 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:43:44,140 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.30 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:43:44,141 INFO L168 Benchmark]: Boogie Preprocessor took 26.51 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 12:43:44,141 INFO L168 Benchmark]: RCFGBuilder took 9590.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -140.5 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2018-11-10 12:43:44,142 INFO L168 Benchmark]: TraceAbstraction took 97517.94 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: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 11.5 GB. [2018-11-10 12:43:44,144 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 174.30 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.51 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 9590.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -140.5 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 97517.94 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: 76.6 MB). Peak memory consumption was 76.6 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...