./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/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 f16872e95ceb4c5bb3d43220bb20359b76e5f33c ........................................................................................................................................................................................................................................................................................................ 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_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/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 f16872e95ceb4c5bb3d43220bb20359b76e5f33c ...................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-5842f4b [2018-11-18 12:46:25,324 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:46:25,325 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:46:25,333 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:46:25,333 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:46:25,334 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:46:25,335 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:46:25,336 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:46:25,337 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:46:25,338 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:46:25,339 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:46:25,339 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:46:25,339 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:46:25,340 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:46:25,341 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:46:25,341 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:46:25,342 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:46:25,343 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:46:25,345 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:46:25,346 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:46:25,346 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:46:25,347 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:46:25,349 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:46:25,349 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:46:25,349 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:46:25,350 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:46:25,351 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:46:25,351 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:46:25,352 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:46:25,353 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:46:25,353 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:46:25,353 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:46:25,353 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:46:25,354 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:46:25,354 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:46:25,355 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:46:25,355 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 12:46:25,365 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:46:25,365 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:46:25,366 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:46:25,366 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 12:46:25,367 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 12:46:25,367 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 12:46:25,367 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 12:46:25,367 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:46:25,367 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:46:25,367 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:46:25,368 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:46:25,368 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:46:25,368 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:46:25,368 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:46:25,368 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:46:25,368 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:46:25,368 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:46:25,369 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:46:25,369 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:46:25,369 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:46:25,369 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:46:25,369 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:46:25,369 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:46:25,369 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:46:25,370 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:46:25,370 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:46:25,370 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:46:25,370 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 12:46:25,370 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:46:25,370 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:46:25,370 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_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/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 -> f16872e95ceb4c5bb3d43220bb20359b76e5f33c [2018-11-18 12:46:25,394 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:46:25,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:46:25,406 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:46:25,408 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:46:25,408 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:46:25,408 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c [2018-11-18 12:46:25,460 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/data/405f732dd/e392dacaea1e4aacb4a7930722f11824/FLAG32e384c03 [2018-11-18 12:46:25,810 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:46:25,811 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c [2018-11-18 12:46:25,815 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/data/405f732dd/e392dacaea1e4aacb4a7930722f11824/FLAG32e384c03 [2018-11-18 12:46:26,226 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/data/405f732dd/e392dacaea1e4aacb4a7930722f11824 [2018-11-18 12:46:26,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:46:26,229 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 12:46:26,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:46:26,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:46:26,231 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:46:26,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:46:26" (1/1) ... [2018-11-18 12:46:26,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c44aa5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:26, skipping insertion in model container [2018-11-18 12:46:26,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:46:26" (1/1) ... [2018-11-18 12:46:26,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:46:26,254 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:46:26,371 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:46:26,374 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:46:26,389 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:46:26,398 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:46:26,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:26 WrapperNode [2018-11-18 12:46:26,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:46:26,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:46:26,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:46:26,399 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:46:26,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:26" (1/1) ... [2018-11-18 12:46:26,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:26" (1/1) ... [2018-11-18 12:46:26,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:26" (1/1) ... [2018-11-18 12:46:26,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:26" (1/1) ... [2018-11-18 12:46:26,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:26" (1/1) ... [2018-11-18 12:46:26,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:26" (1/1) ... [2018-11-18 12:46:26,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:26" (1/1) ... [2018-11-18 12:46:26,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:46:26,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:46:26,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:46:26,421 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:46:26,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/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 [2018-11-18 12:46:26,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:46:26,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:46:26,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 12:46:26,495 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-11-18 12:46:26,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:46:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 12:46:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-18 12:46:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 12:46:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 12:46:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-11-18 12:46:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:46:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:46:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:46:26,625 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:46:26,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:46:26 BoogieIcfgContainer [2018-11-18 12:46:26,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:46:26,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:46:26,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:46:26,628 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:46:26,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:46:26" (1/3) ... [2018-11-18 12:46:26,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9882f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:46:26, skipping insertion in model container [2018-11-18 12:46:26,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:26" (2/3) ... [2018-11-18 12:46:26,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9882f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:46:26, skipping insertion in model container [2018-11-18 12:46:26,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:46:26" (3/3) ... [2018-11-18 12:46:26,631 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant_true-unreach-call.c [2018-11-18 12:46:26,636 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:46:26,641 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:46:26,650 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:46:26,669 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 12:46:26,669 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:46:26,669 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:46:26,669 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:46:26,669 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:46:26,669 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:46:26,669 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:46:26,670 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:46:26,670 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:46:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-18 12:46:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 12:46:26,686 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:46:26,687 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] [2018-11-18 12:46:26,689 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:46:26,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:46:26,694 INFO L82 PathProgramCache]: Analyzing trace with hash 924932034, now seen corresponding path program 1 times [2018-11-18 12:46:26,696 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:46:26,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:46:26,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:46:26,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:46:26,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:46:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:46:26,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:46:26,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:46:26,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:46:26,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:46:26,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:46:26,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:46:26,798 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-11-18 12:46:26,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:46:26,813 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2018-11-18 12:46:26,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:46:26,814 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 12:46:26,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:46:26,819 INFO L225 Difference]: With dead ends: 56 [2018-11-18 12:46:26,819 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 12:46:26,821 INFO L604 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 [2018-11-18 12:46:26,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 12:46:26,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-18 12:46:26,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 12:46:26,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-11-18 12:46:26,846 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2018-11-18 12:46:26,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:46:26,846 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-11-18 12:46:26,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:46:26,846 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-11-18 12:46:26,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 12:46:26,847 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:46:26,847 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] [2018-11-18 12:46:26,847 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:46:26,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:46:26,847 INFO L82 PathProgramCache]: Analyzing trace with hash 244023785, now seen corresponding path program 1 times [2018-11-18 12:46:26,848 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:46:26,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:46:26,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:46:26,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:46:26,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:46:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:46:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:46:26,882 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 12:46:26,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:46:26 BoogieIcfgContainer [2018-11-18 12:46:26,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:46:26,900 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:46:26,900 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:46:26,901 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:46:26,901 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:46:26" (3/4) ... [2018-11-18 12:46:26,903 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 12:46:26,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:46:26,904 INFO L168 Benchmark]: Toolchain (without parser) took 676.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -134.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. [2018-11-18 12:46:26,905 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:46:26,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.21 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:46:26,906 INFO L168 Benchmark]: Boogie Preprocessor took 22.11 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:46:26,906 INFO L168 Benchmark]: RCFGBuilder took 204.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -174.6 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-18 12:46:26,907 INFO L168 Benchmark]: TraceAbstraction took 273.73 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: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2018-11-18 12:46:26,908 INFO L168 Benchmark]: Witness Printer took 3.37 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. [2018-11-18 12:46:26,910 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 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 169.21 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.11 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 204.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -174.6 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 273.73 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: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.37 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, dd, r; [L45] double epsilon = 1e-8; [L47] d = 1. VAL [_EPS=1/1000000, d=1, epsilon=1/100000000] [L47] COND TRUE d <= 20. [L49] dd = __VERIFIER_nondet_double() [L52] CALL, EXPR SqrtR(dd) 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] [L52] EXPR SqrtR(dd) VAL [_EPS=1/1000000, d=2, d=1, epsilon=1/100000000, SqrtR(dd)=4] [L52] r = SqrtR(dd) [L54] CALL __VERIFIER_assert(r >= 0.9 && 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, 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 0.1.23-5842f4b [2018-11-18 12:46:28,377 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:46:28,379 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:46:28,386 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:46:28,386 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:46:28,387 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:46:28,388 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:46:28,389 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:46:28,390 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:46:28,390 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:46:28,391 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:46:28,391 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:46:28,392 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:46:28,393 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:46:28,394 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:46:28,394 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:46:28,395 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:46:28,396 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:46:28,397 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:46:28,398 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:46:28,399 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:46:28,400 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:46:28,402 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:46:28,402 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:46:28,402 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:46:28,403 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:46:28,403 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:46:28,404 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:46:28,404 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:46:28,405 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:46:28,405 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:46:28,406 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:46:28,406 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:46:28,406 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:46:28,407 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:46:28,407 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:46:28,407 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 12:46:28,418 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:46:28,418 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:46:28,419 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:46:28,419 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 12:46:28,420 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 12:46:28,420 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 12:46:28,420 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 12:46:28,420 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:46:28,420 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:46:28,420 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:46:28,420 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:46:28,420 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:46:28,421 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:46:28,421 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:46:28,421 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 12:46:28,421 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 12:46:28,421 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:46:28,421 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:46:28,421 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:46:28,421 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:46:28,421 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:46:28,422 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:46:28,422 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:46:28,422 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:46:28,422 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:46:28,422 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:46:28,422 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:46:28,422 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:46:28,422 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 12:46:28,422 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:46:28,422 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 12:46:28,422 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 12:46:28,423 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_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/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 -> f16872e95ceb4c5bb3d43220bb20359b76e5f33c [2018-11-18 12:46:28,450 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:46:28,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:46:28,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:46:28,460 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:46:28,461 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:46:28,461 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c [2018-11-18 12:46:28,497 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/data/64cc9a9b2/b45696df28284d49a4c7b19251361920/FLAGe4cd28751 [2018-11-18 12:46:28,901 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:46:28,901 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c [2018-11-18 12:46:28,905 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/data/64cc9a9b2/b45696df28284d49a4c7b19251361920/FLAGe4cd28751 [2018-11-18 12:46:28,914 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/bin-2019/uautomizer/data/64cc9a9b2/b45696df28284d49a4c7b19251361920 [2018-11-18 12:46:28,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:46:28,917 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 12:46:28,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:46:28,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:46:28,920 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:46:28,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:46:28" (1/1) ... [2018-11-18 12:46:28,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@85d2bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:28, skipping insertion in model container [2018-11-18 12:46:28,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:46:28" (1/1) ... [2018-11-18 12:46:28,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:46:28,944 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:46:29,074 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:46:29,079 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:46:29,096 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:46:29,106 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:46:29,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:29 WrapperNode [2018-11-18 12:46:29,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:46:29,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:46:29,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:46:29,108 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:46:29,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:29" (1/1) ... [2018-11-18 12:46:29,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:29" (1/1) ... [2018-11-18 12:46:29,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:29" (1/1) ... [2018-11-18 12:46:29,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:29" (1/1) ... [2018-11-18 12:46:29,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:29" (1/1) ... [2018-11-18 12:46:29,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:29" (1/1) ... [2018-11-18 12:46:29,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:29" (1/1) ... [2018-11-18 12:46:29,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:46:29,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:46:29,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:46:29,142 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:46:29,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/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 [2018-11-18 12:46:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:46:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:46:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 12:46:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-11-18 12:46:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:46:29,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 12:46:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-18 12:46:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 12:46:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 12:46:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-11-18 12:46:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:46:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:46:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:46:38,450 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:46:38,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:46:38 BoogieIcfgContainer [2018-11-18 12:46:38,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:46:38,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:46:38,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:46:38,454 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:46:38,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:46:28" (1/3) ... [2018-11-18 12:46:38,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c94181d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:46:38, skipping insertion in model container [2018-11-18 12:46:38,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:46:29" (2/3) ... [2018-11-18 12:46:38,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c94181d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:46:38, skipping insertion in model container [2018-11-18 12:46:38,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:46:38" (3/3) ... [2018-11-18 12:46:38,457 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant_true-unreach-call.c [2018-11-18 12:46:38,463 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:46:38,468 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:46:38,478 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:46:38,500 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 12:46:38,501 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:46:38,501 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:46:38,501 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:46:38,501 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:46:38,502 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:46:38,502 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:46:38,502 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:46:38,502 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:46:38,512 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-18 12:46:38,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 12:46:38,516 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:46:38,516 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] [2018-11-18 12:46:38,518 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:46:38,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:46:38,521 INFO L82 PathProgramCache]: Analyzing trace with hash 924932034, now seen corresponding path program 1 times [2018-11-18 12:46:38,524 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:46:38,524 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/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 [2018-11-18 12:46:38,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:46:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:46:39,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:46:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:46:39,966 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:46:39,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:46:39,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:46:39,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:46:40,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:46:40,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:46:40,009 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-11-18 12:46:40,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:46:40,023 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2018-11-18 12:46:40,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:46:40,024 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 12:46:40,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:46:40,030 INFO L225 Difference]: With dead ends: 56 [2018-11-18 12:46:40,030 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 12:46:40,033 INFO L604 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 [2018-11-18 12:46:40,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 12:46:40,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-18 12:46:40,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 12:46:40,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-11-18 12:46:40,060 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2018-11-18 12:46:40,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:46:40,060 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-11-18 12:46:40,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:46:40,061 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-11-18 12:46:40,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 12:46:40,061 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:46:40,062 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] [2018-11-18 12:46:40,062 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:46:40,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:46:40,062 INFO L82 PathProgramCache]: Analyzing trace with hash 244023785, now seen corresponding path program 1 times [2018-11-18 12:46:40,063 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:46:40,063 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/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 [2018-11-18 12:46:40,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:46:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:46:41,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:46:48,535 WARN L180 SmtUtils]: Spent 5.40 s on a formula simplification. DAG size of input: 31 DAG size of output: 9 [2018-11-18 12:46:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:46:48,539 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:46:48,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:46:48,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 12:46:48,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 12:46:48,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 12:46:48,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 12:46:48,566 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2018-11-18 12:46:54,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:46:54,862 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2018-11-18 12:46:54,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 12:46:54,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-18 12:46:54,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:46:54,864 INFO L225 Difference]: With dead ends: 49 [2018-11-18 12:46:54,864 INFO L226 Difference]: Without dead ends: 29 [2018-11-18 12:46:54,864 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 12:46:54,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-18 12:46:54,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-11-18 12:46:54,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-18 12:46:54,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-11-18 12:46:54,868 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2018-11-18 12:46:54,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:46:54,869 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-11-18 12:46:54,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 12:46:54,869 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-11-18 12:46:54,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 12:46:54,869 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:46:54,870 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] [2018-11-18 12:46:54,870 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:46:54,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:46:54,870 INFO L82 PathProgramCache]: Analyzing trace with hash 502189223, now seen corresponding path program 1 times [2018-11-18 12:46:54,870 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:46:54,870 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b1fc4c-e028-4e98-8074-5c4b683c8eb2/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 [2018-11-18 12:46:54,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:46:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:47:00,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:47:29,969 WARN L180 SmtUtils]: Spent 11.67 s on a formula simplification that was a NOOP. DAG size: 14 [2018-11-18 12:47:32,322 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (let ((.cse4 (fp.add roundNearestTiesToEven c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (let ((.cse2 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) c_~_EPS~0) .cse4)) (.cse3 (fp.mul roundNearestTiesToEven c_~_EPS~0 .cse4))) (let ((.cse1 (fp.gt .cse2 .cse3)) (.cse0 (fp.lt .cse2 (fp.neg .cse3)))) (or (and (or .cse0 .cse1) (= (_ bv1 32) c_SqrtR_~cond~0)) (and (not .cse1) (= (_ bv0 32) c_SqrtR_~cond~0) (not .cse0)))))) (not (fp.leq |c_SqrtR_#in~Input| .cse5)) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (= (fp.div roundNearestTiesToEven .cse5 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0))) is different from false [2018-11-18 12:47:34,396 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (let ((.cse4 (fp.add roundNearestTiesToEven c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (let ((.cse2 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) c_~_EPS~0) .cse4)) (.cse3 (fp.mul roundNearestTiesToEven c_~_EPS~0 .cse4))) (let ((.cse1 (fp.gt .cse2 .cse3)) (.cse0 (fp.lt .cse2 (fp.neg .cse3)))) (or (and (or .cse0 .cse1) (= (_ bv1 32) c_SqrtR_~cond~0)) (and (not .cse1) (= (_ bv0 32) c_SqrtR_~cond~0) (not .cse0)))))) (not (fp.leq |c_SqrtR_#in~Input| .cse5)) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (= (fp.div roundNearestTiesToEven .cse5 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0))) is different from true [2018-11-18 12:47:36,782 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.add roundNearestTiesToEven c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) c_~_EPS~0) .cse3)) (.cse1 (fp.mul roundNearestTiesToEven c_~_EPS~0 .cse3))) (and (not (fp.gt .cse0 .cse1)) (not (fp.leq |c_SqrtR_#in~Input| .cse2)) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (= (fp.div roundNearestTiesToEven .cse2 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0) (not (fp.lt .cse0 (fp.neg .cse1)))))) is different from false [2018-11-18 12:47:38,854 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.add roundNearestTiesToEven c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) c_~_EPS~0) .cse3)) (.cse1 (fp.mul roundNearestTiesToEven c_~_EPS~0 .cse3))) (and (not (fp.gt .cse0 .cse1)) (not (fp.leq |c_SqrtR_#in~Input| .cse2)) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (= (fp.div roundNearestTiesToEven .cse2 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0) (not (fp.lt .cse0 (fp.neg .cse1)))))) is different from true [2018-11-18 12:47:41,470 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven .cse2 |c_SqrtR_#in~Input|))) (let ((.cse4 (fp.add roundNearestTiesToEven .cse3 .cse3))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) c_~_EPS~0) .cse4)) (.cse1 (fp.mul roundNearestTiesToEven c_~_EPS~0 .cse4))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (= |c_SqrtR_#res| (fp.div roundNearestTiesToEven .cse2 .cse3)) (not (fp.leq |c_SqrtR_#in~Input| .cse2)) (not (fp.gt .cse0 .cse1)) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0)))))))) is different from false [2018-11-18 12:47:43,881 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven .cse2 |c_SqrtR_#in~Input|))) (let ((.cse4 (fp.add roundNearestTiesToEven .cse3 .cse3))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) c_~_EPS~0) .cse4)) (.cse1 (fp.mul roundNearestTiesToEven c_~_EPS~0 .cse4))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (= |c_SqrtR_#res| (fp.div roundNearestTiesToEven .cse2 .cse3)) (not (fp.leq |c_SqrtR_#in~Input| .cse2)) (not (fp.gt .cse0 .cse1)) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0)))))))) is different from true [2018-11-18 12:47:46,543 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~dd~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse4 (fp.div roundNearestTiesToEven .cse2 main_~dd~0))) (let ((.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse6 (fp.add roundNearestTiesToEven .cse4 .cse4))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse5) .cse6)) (.cse1 (fp.mul roundNearestTiesToEven .cse5 .cse6)) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (not (fp.gt .cse0 .cse1)) (not (fp.leq main_~dd~0 .cse2)) (fp.leq main_~dd~0 (fp.add roundNearestTiesToEven .cse2 .cse3)) (not (fp.lt .cse0 (fp.neg .cse1))) (fp.geq main_~dd~0 (fp.sub roundNearestTiesToEven .cse2 .cse3)) (= |c_main_#t~ret3| (fp.div roundNearestTiesToEven .cse2 .cse4)))))))) is different from false [2018-11-18 12:47:49,052 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~dd~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse4 (fp.div roundNearestTiesToEven .cse2 main_~dd~0))) (let ((.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse6 (fp.add roundNearestTiesToEven .cse4 .cse4))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse5) .cse6)) (.cse1 (fp.mul roundNearestTiesToEven .cse5 .cse6)) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (not (fp.gt .cse0 .cse1)) (not (fp.leq main_~dd~0 .cse2)) (fp.leq main_~dd~0 (fp.add roundNearestTiesToEven .cse2 .cse3)) (not (fp.lt .cse0 (fp.neg .cse1))) (fp.geq main_~dd~0 (fp.sub roundNearestTiesToEven .cse2 .cse3)) (= |c_main_#t~ret3| (fp.div roundNearestTiesToEven .cse2 .cse4)))))))) is different from true [2018-11-18 12:47:51,691 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~dd~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven .cse2 main_~dd~0))) (let ((.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse6 (fp.add roundNearestTiesToEven .cse3 .cse3))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse5) .cse6)) (.cse1 (fp.mul roundNearestTiesToEven .cse5 .cse6)) (.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (not (fp.gt .cse0 .cse1)) (not (fp.leq main_~dd~0 .cse2)) (= (fp.div roundNearestTiesToEven .cse2 .cse3) c_main_~r~0) (fp.leq main_~dd~0 (fp.add roundNearestTiesToEven .cse2 .cse4)) (not (fp.lt .cse0 (fp.neg .cse1))) (fp.geq main_~dd~0 (fp.sub roundNearestTiesToEven .cse2 .cse4)))))))) is different from false [2018-11-18 12:47:54,222 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~dd~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven .cse2 main_~dd~0))) (let ((.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse6 (fp.add roundNearestTiesToEven .cse3 .cse3))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse5) .cse6)) (.cse1 (fp.mul roundNearestTiesToEven .cse5 .cse6)) (.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (not (fp.gt .cse0 .cse1)) (not (fp.leq main_~dd~0 .cse2)) (= (fp.div roundNearestTiesToEven .cse2 .cse3) c_main_~r~0) (fp.leq main_~dd~0 (fp.add roundNearestTiesToEven .cse2 .cse4)) (not (fp.lt .cse0 (fp.neg .cse1))) (fp.geq main_~dd~0 (fp.sub roundNearestTiesToEven .cse2 .cse4)))))))) is different from true [2018-11-18 12:48:15,128 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-11-18 12:48:15,329 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2018-11-18 12:48:15,329 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:823) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java: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 [2018-11-18 12:48:15,332 INFO L168 Benchmark]: Toolchain (without parser) took 106415.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 954.6 MB in the beginning and 1.0 GB in the end (delta: -74.5 MB). Peak memory consumption was 66.0 MB. Max. memory is 11.5 GB. [2018-11-18 12:48:15,333 INFO L168 Benchmark]: CDTParser took 0.12 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. [2018-11-18 12:48:15,333 INFO L168 Benchmark]: CACSL2BoogieTranslator took 189.67 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 938.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:48:15,333 INFO L168 Benchmark]: Boogie Preprocessor took 34.50 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. [2018-11-18 12:48:15,334 INFO L168 Benchmark]: RCFGBuilder took 9308.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 938.5 MB in the beginning and 1.1 GB in the end (delta: -170.8 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2018-11-18 12:48:15,334 INFO L168 Benchmark]: TraceAbstraction took 96879.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 80.1 MB). Peak memory consumption was 80.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:48:15,337 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 189.67 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 938.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.50 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 9308.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 938.5 MB in the beginning and 1.1 GB in the end (delta: -170.8 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 96879.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 80.1 MB). Peak memory consumption was 80.1 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...