./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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 0.1.23-635dfa2 [2018-12-09 17:25:25,614 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 17:25:25,616 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 17:25:25,624 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 17:25:25,624 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 17:25:25,625 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 17:25:25,626 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 17:25:25,627 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 17:25:25,628 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 17:25:25,629 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 17:25:25,630 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 17:25:25,630 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 17:25:25,630 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 17:25:25,631 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 17:25:25,632 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 17:25:25,632 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 17:25:25,633 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 17:25:25,634 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 17:25:25,636 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 17:25:25,637 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 17:25:25,637 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 17:25:25,638 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 17:25:25,640 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 17:25:25,640 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 17:25:25,640 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 17:25:25,641 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 17:25:25,642 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 17:25:25,642 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 17:25:25,643 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 17:25:25,643 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 17:25:25,644 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 17:25:25,644 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 17:25:25,644 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 17:25:25,644 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 17:25:25,645 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 17:25:25,645 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 17:25:25,645 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 17:25:25,655 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 17:25:25,655 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 17:25:25,655 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 17:25:25,655 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 17:25:25,656 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 17:25:25,656 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 17:25:25,656 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 17:25:25,656 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 17:25:25,656 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 17:25:25,656 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 17:25:25,656 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 17:25:25,656 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 17:25:25,656 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 17:25:25,657 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 17:25:25,657 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 17:25:25,657 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 17:25:25,657 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 17:25:25,657 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 17:25:25,658 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 17:25:25,658 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 17:25:25,658 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 17:25:25,658 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 17:25:25,658 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 17:25:25,658 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 17:25:25,658 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 17:25:25,658 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 17:25:25,659 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 17:25:25,659 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 17:25:25,659 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 17:25:25,659 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 17:25:25,659 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 17:25:25,659 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 17:25:25,659 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 17:25:25,659 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 17:25:25,659 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 17:25:25,659 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 17:25:25,659 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f16872e95ceb4c5bb3d43220bb20359b76e5f33c [2018-12-09 17:25:25,681 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 17:25:25,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 17:25:25,690 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 17:25:25,691 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 17:25:25,691 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 17:25:25,692 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c [2018-12-09 17:25:25,728 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/data/d7cfb4c65/fb8ed830ab894340a1b945f6d805b6c5/FLAG17d63c2f0 [2018-12-09 17:25:26,166 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 17:25:26,166 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c [2018-12-09 17:25:26,170 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/data/d7cfb4c65/fb8ed830ab894340a1b945f6d805b6c5/FLAG17d63c2f0 [2018-12-09 17:25:26,178 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/data/d7cfb4c65/fb8ed830ab894340a1b945f6d805b6c5 [2018-12-09 17:25:26,180 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 17:25:26,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 17:25:26,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 17:25:26,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 17:25:26,183 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 17:25:26,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:25:26" (1/1) ... [2018-12-09 17:25:26,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@484c0a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26, skipping insertion in model container [2018-12-09 17:25:26,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:25:26" (1/1) ... [2018-12-09 17:25:26,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 17:25:26,199 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 17:25:26,288 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 17:25:26,290 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 17:25:26,302 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 17:25:26,310 INFO L195 MainTranslator]: Completed translation [2018-12-09 17:25:26,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26 WrapperNode [2018-12-09 17:25:26,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 17:25:26,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 17:25:26,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 17:25:26,311 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 17:25:26,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... [2018-12-09 17:25:26,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... [2018-12-09 17:25:26,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 17:25:26,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 17:25:26,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 17:25:26,324 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 17:25:26,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... [2018-12-09 17:25:26,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... [2018-12-09 17:25:26,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... [2018-12-09 17:25:26,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... [2018-12-09 17:25:26,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... [2018-12-09 17:25:26,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... [2018-12-09 17:25:26,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... [2018-12-09 17:25:26,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 17:25:26,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 17:25:26,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 17:25:26,367 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 17:25:26,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 17:25:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 17:25:26,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 17:25:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-12-09 17:25:26,409 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-12-09 17:25:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 17:25:26,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 17:25:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 17:25:26,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 17:25:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 17:25:26,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 17:25:26,508 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 17:25:26,508 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 17:25:26,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:25:26 BoogieIcfgContainer [2018-12-09 17:25:26,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 17:25:26,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 17:25:26,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 17:25:26,511 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 17:25:26,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:25:26" (1/3) ... [2018-12-09 17:25:26,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c98fca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:25:26, skipping insertion in model container [2018-12-09 17:25:26,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (2/3) ... [2018-12-09 17:25:26,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c98fca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:25:26, skipping insertion in model container [2018-12-09 17:25:26,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:25:26" (3/3) ... [2018-12-09 17:25:26,513 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant_true-unreach-call.c [2018-12-09 17:25:26,519 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 17:25:26,523 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 17:25:26,533 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 17:25:26,552 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 17:25:26,552 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 17:25:26,552 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 17:25:26,552 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 17:25:26,552 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 17:25:26,552 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 17:25:26,552 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 17:25:26,552 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 17:25:26,562 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-12-09 17:25:26,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 17:25:26,566 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:25:26,566 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:25:26,568 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 17:25:26,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:25:26,571 INFO L82 PathProgramCache]: Analyzing trace with hash -995072322, now seen corresponding path program 1 times [2018-12-09 17:25:26,572 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 17:25:26,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:25:26,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:25:26,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:25:26,601 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 17:25:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 17:25:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 17:25:26,650 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 17:25:26,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:25:26 BoogieIcfgContainer [2018-12-09 17:25:26,667 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 17:25:26,667 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 17:25:26,667 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 17:25:26,667 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 17:25:26,667 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:25:26" (3/4) ... [2018-12-09 17:25:26,670 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 17:25:26,670 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 17:25:26,670 INFO L168 Benchmark]: Toolchain (without parser) took 490.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 957.8 MB in the beginning and 1.1 GB in the end (delta: -133.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:25:26,671 INFO L168 Benchmark]: CDTParser took 0.11 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. [2018-12-09 17:25:26,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 129.30 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 946.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-09 17:25:26,672 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.80 ms. Allocated memory is still 1.0 GB. Free memory is still 946.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:25:26,672 INFO L168 Benchmark]: Boogie Preprocessor took 43.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -181.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-12-09 17:25:26,672 INFO L168 Benchmark]: RCFGBuilder took 141.23 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: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2018-12-09 17:25:26,673 INFO L168 Benchmark]: TraceAbstraction took 157.89 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: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2018-12-09 17:25:26,673 INFO L168 Benchmark]: Witness Printer took 2.69 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. [2018-12-09 17:25:26,675 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 129.30 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 946.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.80 ms. Allocated memory is still 1.0 GB. Free memory is still 946.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -181.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 141.23 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: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 157.89 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: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.69 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 54, overapproximation of someUnaryDOUBLEoperation at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 39. Possible FailurePath: [L17] double _EPS = 1e-6; VAL [\old(_EPS)=2, _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)=3, _EPS=1/1000000] [L21] double xn, xnp1, residu, lsup, linf; [L22] int i, cond; VAL [\old(Input)=3, _EPS=1/1000000, Input=3] [L23] COND TRUE Input <= 1.0 [L23] xn = 1.0 VAL [\old(Input)=3, _EPS=1/1000000, Input=3, 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)=3, _EPS=1/1000000, cond=0, i=0, Input=3, xn=1, xn=1] [L30] COND FALSE !(\read(cond)) VAL [\old(Input)=3, _EPS=1/1000000, cond=0, i=0, Input=3, xn=1, xn=1] [L39] return 1.0 / xnp1; VAL [\old(Input)=3, _EPS=1/1000000, cond=0, i=0, Input=3, xn=1, xn=1] [L52] RET, EXPR SqrtR(dd) VAL [_EPS=1/1000000, d=3, 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, 29 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 17:25:28,117 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 17:25:28,118 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 17:25:28,124 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 17:25:28,124 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 17:25:28,125 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 17:25:28,125 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 17:25:28,126 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 17:25:28,127 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 17:25:28,127 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 17:25:28,127 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 17:25:28,128 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 17:25:28,128 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 17:25:28,128 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 17:25:28,129 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 17:25:28,129 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 17:25:28,130 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 17:25:28,131 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 17:25:28,132 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 17:25:28,133 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 17:25:28,133 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 17:25:28,134 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 17:25:28,135 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 17:25:28,135 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 17:25:28,135 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 17:25:28,135 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 17:25:28,136 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 17:25:28,136 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 17:25:28,137 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 17:25:28,137 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 17:25:28,137 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 17:25:28,138 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 17:25:28,138 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 17:25:28,138 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 17:25:28,139 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 17:25:28,140 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 17:25:28,140 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 17:25:28,149 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 17:25:28,150 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 17:25:28,150 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 17:25:28,150 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 17:25:28,151 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 17:25:28,151 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 17:25:28,151 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 17:25:28,151 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 17:25:28,151 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 17:25:28,151 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 17:25:28,152 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 17:25:28,152 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 17:25:28,152 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 17:25:28,152 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 17:25:28,153 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 17:25:28,153 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 17:25:28,153 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 17:25:28,153 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 17:25:28,153 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 17:25:28,153 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 17:25:28,154 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 17:25:28,154 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 17:25:28,154 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 17:25:28,154 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 17:25:28,154 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 17:25:28,154 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 17:25:28,154 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 17:25:28,155 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 17:25:28,155 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 17:25:28,155 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 17:25:28,155 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 17:25:28,155 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 17:25:28,155 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 17:25:28,155 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 17:25:28,156 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 17:25:28,156 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_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f16872e95ceb4c5bb3d43220bb20359b76e5f33c [2018-12-09 17:25:28,180 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 17:25:28,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 17:25:28,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 17:25:28,193 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 17:25:28,194 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 17:25:28,194 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c [2018-12-09 17:25:28,234 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/data/72290fb88/b0c1975d0a364ada9237350c7a00e4ff/FLAG952b2559c [2018-12-09 17:25:28,632 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 17:25:28,633 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c [2018-12-09 17:25:28,637 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/data/72290fb88/b0c1975d0a364ada9237350c7a00e4ff/FLAG952b2559c [2018-12-09 17:25:28,645 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/data/72290fb88/b0c1975d0a364ada9237350c7a00e4ff [2018-12-09 17:25:28,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 17:25:28,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 17:25:28,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 17:25:28,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 17:25:28,650 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 17:25:28,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:25:28" (1/1) ... [2018-12-09 17:25:28,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@267733d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:28, skipping insertion in model container [2018-12-09 17:25:28,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:25:28" (1/1) ... [2018-12-09 17:25:28,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 17:25:28,666 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 17:25:28,758 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 17:25:28,761 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 17:25:28,775 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 17:25:28,783 INFO L195 MainTranslator]: Completed translation [2018-12-09 17:25:28,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:28 WrapperNode [2018-12-09 17:25:28,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 17:25:28,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 17:25:28,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 17:25:28,784 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 17:25:28,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:28" (1/1) ... [2018-12-09 17:25:28,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:28" (1/1) ... [2018-12-09 17:25:28,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 17:25:28,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 17:25:28,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 17:25:28,799 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 17:25:28,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:28" (1/1) ... [2018-12-09 17:25:28,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:28" (1/1) ... [2018-12-09 17:25:28,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:28" (1/1) ... [2018-12-09 17:25:28,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:28" (1/1) ... [2018-12-09 17:25:28,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:28" (1/1) ... [2018-12-09 17:25:28,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:28" (1/1) ... [2018-12-09 17:25:28,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:28" (1/1) ... [2018-12-09 17:25:28,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 17:25:28,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 17:25:28,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 17:25:28,816 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 17:25:28,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 17:25:28,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 17:25:28,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 17:25:28,877 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-12-09 17:25:28,877 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-12-09 17:25:28,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 17:25:28,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 17:25:28,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 17:25:28,878 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 17:25:28,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 17:25:28,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 17:25:37,106 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 17:25:37,106 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 17:25:37,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:25:37 BoogieIcfgContainer [2018-12-09 17:25:37,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 17:25:37,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 17:25:37,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 17:25:37,109 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 17:25:37,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:25:28" (1/3) ... [2018-12-09 17:25:37,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760a941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:25:37, skipping insertion in model container [2018-12-09 17:25:37,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:28" (2/3) ... [2018-12-09 17:25:37,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760a941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:25:37, skipping insertion in model container [2018-12-09 17:25:37,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:25:37" (3/3) ... [2018-12-09 17:25:37,111 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant_true-unreach-call.c [2018-12-09 17:25:37,117 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 17:25:37,122 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 17:25:37,131 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 17:25:37,147 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 17:25:37,148 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 17:25:37,148 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 17:25:37,148 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 17:25:37,148 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 17:25:37,148 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 17:25:37,148 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 17:25:37,148 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 17:25:37,148 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 17:25:37,158 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-12-09 17:25:37,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 17:25:37,161 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:25:37,162 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:25:37,163 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 17:25:37,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:25:37,166 INFO L82 PathProgramCache]: Analyzing trace with hash -995072322, now seen corresponding path program 1 times [2018-12-09 17:25:37,168 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 17:25:37,168 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-09 17:25:37,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:25:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:25:38,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 17:25:44,535 WARN L180 SmtUtils]: Spent 5.05 s on a formula simplification. DAG size of input: 31 DAG size of output: 9 [2018-12-09 17:25:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 17:25:44,539 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 17:25:44,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:25:44,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 17:25:44,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 17:25:44,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 17:25:44,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:25:44,576 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2018-12-09 17:25:55,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:25:55,159 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2018-12-09 17:25:55,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 17:25:55,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-09 17:25:55,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:25:55,166 INFO L225 Difference]: With dead ends: 54 [2018-12-09 17:25:55,166 INFO L226 Difference]: Without dead ends: 26 [2018-12-09 17:25:55,169 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-12-09 17:25:55,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-09 17:25:55,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-12-09 17:25:55,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-09 17:25:55,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-12-09 17:25:55,195 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 20 [2018-12-09 17:25:55,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:25:55,196 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-12-09 17:25:55,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 17:25:55,196 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-12-09 17:25:55,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 17:25:55,197 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:25:55,197 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:25:55,197 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 17:25:55,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:25:55,198 INFO L82 PathProgramCache]: Analyzing trace with hash -294007744, now seen corresponding path program 1 times [2018-12-09 17:25:55,198 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 17:25:55,198 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88f42119-3744-43d3-b3f8-f52197c8feb5/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-09 17:25:55,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:25:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:25:58,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 17:26:01,043 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (= (fp.div roundNearestTiesToEven .cse0 |c_SqrtR_#in~Input|) c_SqrtR_~xn~0) (not (fp.leq |c_SqrtR_#in~Input| .cse0)) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))))) is different from false [2018-12-09 17:26:03,284 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (= (fp.div roundNearestTiesToEven .cse0 |c_SqrtR_#in~Input|) c_SqrtR_~xn~0) (not (fp.leq |c_SqrtR_#in~Input| .cse0)) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))))) is different from true [2018-12-09 17:26:05,599 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 [2018-12-09 17:26:07,836 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 [2018-12-09 17:26:10,199 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 [2018-12-09 17:26:12,270 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 [2018-12-09 17:26:14,898 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 [2018-12-09 17:26:17,278 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 [2018-12-09 17:26:19,909 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 [2018-12-09 17:26:22,436 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 [2018-12-09 17:26:25,069 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 [2018-12-09 17:26:27,607 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 [2018-12-09 17:26:48,149 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-09 17:26:48,350 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2018-12-09 17:26:48,352 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:823) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 39 more [2018-12-09 17:26:48,358 INFO L168 Benchmark]: Toolchain (without parser) took 79711.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -99.6 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2018-12-09 17:26:48,360 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:26:48,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 136.04 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 17:26:48,360 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.30 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 17:26:48,361 INFO L168 Benchmark]: Boogie Preprocessor took 17.10 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:26:48,361 INFO L168 Benchmark]: RCFGBuilder took 8290.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -181.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2018-12-09 17:26:48,362 INFO L168 Benchmark]: TraceAbstraction took 71250.24 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: 66.2 MB). Peak memory consumption was 66.2 MB. Max. memory is 11.5 GB. [2018-12-09 17:26:48,364 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 136.04 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.30 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.10 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 8290.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -181.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 71250.24 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: 66.2 MB). Peak memory consumption was 66.2 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...