./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 044666208476da4ad4fcec9a18fadf3bde3ce58f ...................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 044666208476da4ad4fcec9a18fadf3bde3ce58f ...................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 16:29:19,602 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:29:19,603 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:29:19,612 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:29:19,612 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:29:19,613 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:29:19,614 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:29:19,615 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:29:19,617 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:29:19,617 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:29:19,618 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:29:19,618 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:29:19,619 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:29:19,620 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:29:19,620 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:29:19,622 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:29:19,622 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:29:19,624 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:29:19,626 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:29:19,627 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:29:19,628 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:29:19,629 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:29:19,630 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:29:19,631 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:29:19,631 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:29:19,631 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:29:19,632 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:29:19,633 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:29:19,634 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:29:19,635 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:29:19,635 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:29:19,636 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:29:19,636 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:29:19,636 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:29:19,638 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:29:19,638 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:29:19,639 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 16:29:19,651 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:29:19,651 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:29:19,651 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:29:19,652 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 16:29:19,652 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 16:29:19,652 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 16:29:19,652 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 16:29:19,653 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:29:19,653 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:29:19,654 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:29:19,654 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:29:19,654 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:29:19,654 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:29:19,654 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:29:19,654 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:29:19,655 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:29:19,655 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:29:19,655 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:29:19,655 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:29:19,655 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:29:19,655 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:29:19,655 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:29:19,656 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:29:19,656 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:29:19,656 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:29:19,656 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:29:19,656 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:29:19,656 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 16:29:19,656 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:29:19,657 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:29:19,657 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_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 044666208476da4ad4fcec9a18fadf3bde3ce58f [2018-11-18 16:29:19,682 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:29:19,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:29:19,693 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:29:19,694 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:29:19,694 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:29:19,695 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c [2018-11-18 16:29:19,735 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/data/a0356f467/3e8aa76335d64a22bcf5dbf163df510f/FLAG6e6730135 [2018-11-18 16:29:20,101 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:29:20,102 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c [2018-11-18 16:29:20,107 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/data/a0356f467/3e8aa76335d64a22bcf5dbf163df510f/FLAG6e6730135 [2018-11-18 16:29:20,542 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/data/a0356f467/3e8aa76335d64a22bcf5dbf163df510f [2018-11-18 16:29:20,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:29:20,558 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 16:29:20,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:29:20,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:29:20,563 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:29:20,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:29:20" (1/1) ... [2018-11-18 16:29:20,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e67cf6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:20, skipping insertion in model container [2018-11-18 16:29:20,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:29:20" (1/1) ... [2018-11-18 16:29:20,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:29:20,587 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:29:20,719 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:29:20,723 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:29:20,739 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:29:20,751 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:29:20,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:20 WrapperNode [2018-11-18 16:29:20,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:29:20,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:29:20,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:29:20,752 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:29:20,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:20" (1/1) ... [2018-11-18 16:29:20,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:20" (1/1) ... [2018-11-18 16:29:20,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:20" (1/1) ... [2018-11-18 16:29:20,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:20" (1/1) ... [2018-11-18 16:29:20,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:20" (1/1) ... [2018-11-18 16:29:20,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:20" (1/1) ... [2018-11-18 16:29:20,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:20" (1/1) ... [2018-11-18 16:29:20,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:29:20,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:29:20,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:29:20,777 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:29:20,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/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 16:29:20,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:29:20,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:29:20,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 16:29:20,858 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-11-18 16:29:20,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:29:20,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 16:29:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-18 16:29:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 16:29:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 16:29:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-11-18 16:29:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:29:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:29:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:29:21,009 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:29:21,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:29:21 BoogieIcfgContainer [2018-11-18 16:29:21,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:29:21,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:29:21,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:29:21,014 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:29:21,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:29:20" (1/3) ... [2018-11-18 16:29:21,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afbb9e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:29:21, skipping insertion in model container [2018-11-18 16:29:21,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:20" (2/3) ... [2018-11-18 16:29:21,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afbb9e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:29:21, skipping insertion in model container [2018-11-18 16:29:21,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:29:21" (3/3) ... [2018-11-18 16:29:21,017 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval_true-unreach-call.c [2018-11-18 16:29:21,025 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:29:21,031 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:29:21,044 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:29:21,076 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:29:21,077 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:29:21,077 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:29:21,077 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:29:21,077 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:29:21,077 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:29:21,078 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:29:21,078 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:29:21,078 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:29:21,093 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-18 16:29:21,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 16:29:21,097 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:29:21,098 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:29:21,100 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:29:21,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:29:21,104 INFO L82 PathProgramCache]: Analyzing trace with hash 469878416, now seen corresponding path program 1 times [2018-11-18 16:29:21,105 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:29:21,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:29:21,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:29:21,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:29:21,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:29:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:29:21,191 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 16:29:21,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:29:21,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:29:21,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 16:29:21,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 16:29:21,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:29:21,208 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2018-11-18 16:29:21,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:29:21,227 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-11-18 16:29:21,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 16:29:21,228 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-11-18 16:29:21,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:29:21,237 INFO L225 Difference]: With dead ends: 44 [2018-11-18 16:29:21,237 INFO L226 Difference]: Without dead ends: 21 [2018-11-18 16:29:21,240 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 16:29:21,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-18 16:29:21,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-18 16:29:21,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 16:29:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-11-18 16:29:21,264 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2018-11-18 16:29:21,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:29:21,264 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-11-18 16:29:21,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 16:29:21,264 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-11-18 16:29:21,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 16:29:21,265 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:29:21,265 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:29:21,265 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:29:21,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:29:21,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1576115003, now seen corresponding path program 1 times [2018-11-18 16:29:21,266 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:29:21,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:29:21,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:29:21,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:29:21,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:29:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:29:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:29:21,305 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 16:29:21,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:29:21 BoogieIcfgContainer [2018-11-18 16:29:21,323 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:29:21,324 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:29:21,324 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:29:21,324 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:29:21,325 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:29:21" (3/4) ... [2018-11-18 16:29:21,328 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 16:29:21,328 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:29:21,329 INFO L168 Benchmark]: Toolchain (without parser) took 781.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 958.5 MB in the beginning and 1.0 GB in the end (delta: -87.4 MB). Peak memory consumption was 1.2 MB. Max. memory is 11.5 GB. [2018-11-18 16:29:21,330 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:29:21,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.41 ms. Allocated memory is still 1.0 GB. Free memory was 958.5 MB in the beginning and 947.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:29:21,332 INFO L168 Benchmark]: Boogie Preprocessor took 24.93 ms. Allocated memory is still 1.0 GB. Free memory was 947.7 MB in the beginning and 945.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:29:21,332 INFO L168 Benchmark]: RCFGBuilder took 232.99 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -125.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 16:29:21,334 INFO L168 Benchmark]: TraceAbstraction took 312.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-11-18 16:29:21,335 INFO L168 Benchmark]: Witness Printer took 4.47 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:29:21,337 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 192.41 ms. Allocated memory is still 1.0 GB. Free memory was 958.5 MB in the beginning and 947.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.93 ms. Allocated memory is still 1.0 GB. Free memory was 947.7 MB in the beginning and 945.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 232.99 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -125.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 312.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.47 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someUnaryDOUBLEoperation at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 39. Possible FailurePath: [L17] double _EPS = 1e-6; VAL [\old(_EPS)=3, _EPS=1/1000000] [L44] double d, r; [L46] d = __VERIFIER_nondet_double() [L49] CALL, EXPR SqrtR(d) VAL [\old(Input)=2, _EPS=1/1000000] [L21] double xn, xnp1, residu, lsup, linf; [L22] int i, cond; VAL [\old(Input)=2, _EPS=1/1000000, Input=2] [L23] COND TRUE Input <= 1.0 [L23] xn = 1.0 VAL [\old(Input)=2, _EPS=1/1000000, Input=2, xn=1] [L24] xnp1 = xn [L25] residu = 2.0*_EPS*(xn+xnp1) [L26] lsup = _EPS * (xn+xnp1) [L27] linf = -lsup [L28] cond = ((residu > lsup) || (residu < linf)) [L29] i = 0 VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L30] COND FALSE !(\read(cond)) VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L39] RET return 1.0 / xnp1; VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L49] EXPR SqrtR(d) VAL [_EPS=1/1000000, d=2, SqrtR(d)=4] [L49] r = SqrtR(d) [L51] CALL __VERIFIER_assert(r >= 0.3 && r <= 5.) VAL [\old(cond)=0, _EPS=1/1000000] [L15] COND TRUE !(cond) VAL [\old(cond)=0, _EPS=1/1000000, cond=0] [L15] __VERIFIER_error() VAL [\old(cond)=0, _EPS=1/1000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 16:29:23,017 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:29:23,018 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:29:23,028 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:29:23,028 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:29:23,029 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:29:23,030 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:29:23,032 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:29:23,033 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:29:23,034 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:29:23,035 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:29:23,035 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:29:23,036 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:29:23,036 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:29:23,038 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:29:23,039 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:29:23,039 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:29:23,041 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:29:23,042 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:29:23,043 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:29:23,044 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:29:23,046 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:29:23,047 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:29:23,048 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:29:23,048 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:29:23,049 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:29:23,050 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:29:23,051 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:29:23,051 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:29:23,052 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:29:23,052 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:29:23,053 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:29:23,053 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:29:23,054 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:29:23,054 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:29:23,055 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:29:23,055 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 16:29:23,067 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:29:23,067 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:29:23,068 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:29:23,068 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 16:29:23,068 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 16:29:23,068 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 16:29:23,069 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 16:29:23,070 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:29:23,070 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:29:23,070 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:29:23,070 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:29:23,070 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:29:23,070 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:29:23,071 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:29:23,071 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 16:29:23,071 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 16:29:23,071 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:29:23,071 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:29:23,071 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:29:23,072 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:29:23,072 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:29:23,072 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:29:23,072 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:29:23,072 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:29:23,072 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:29:23,073 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:29:23,073 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:29:23,075 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:29:23,075 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 16:29:23,075 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:29:23,075 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 16:29:23,075 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 16:29:23,075 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_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 044666208476da4ad4fcec9a18fadf3bde3ce58f [2018-11-18 16:29:23,109 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:29:23,119 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:29:23,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:29:23,123 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:29:23,123 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:29:23,124 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c [2018-11-18 16:29:23,167 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/data/3c7726d56/9cf4fc2f0f444e9e8fb85c5a626a175b/FLAGbdb620b62 [2018-11-18 16:29:23,597 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:29:23,598 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c [2018-11-18 16:29:23,602 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/data/3c7726d56/9cf4fc2f0f444e9e8fb85c5a626a175b/FLAGbdb620b62 [2018-11-18 16:29:24,032 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/bin-2019/uautomizer/data/3c7726d56/9cf4fc2f0f444e9e8fb85c5a626a175b [2018-11-18 16:29:24,034 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:29:24,036 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 16:29:24,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:29:24,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:29:24,040 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:29:24,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:29:24" (1/1) ... [2018-11-18 16:29:24,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5277f8d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:24, skipping insertion in model container [2018-11-18 16:29:24,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:29:24" (1/1) ... [2018-11-18 16:29:24,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:29:24,069 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:29:24,229 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:29:24,238 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:29:24,259 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:29:24,273 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:29:24,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:24 WrapperNode [2018-11-18 16:29:24,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:29:24,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:29:24,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:29:24,274 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:29:24,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:24" (1/1) ... [2018-11-18 16:29:24,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:24" (1/1) ... [2018-11-18 16:29:24,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:24" (1/1) ... [2018-11-18 16:29:24,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:24" (1/1) ... [2018-11-18 16:29:24,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:24" (1/1) ... [2018-11-18 16:29:24,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:24" (1/1) ... [2018-11-18 16:29:24,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:24" (1/1) ... [2018-11-18 16:29:24,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:29:24,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:29:24,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:29:24,311 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:29:24,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/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 16:29:24,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:29:24,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:29:24,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 16:29:24,410 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-11-18 16:29:24,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:29:24,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 16:29:24,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-18 16:29:24,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 16:29:24,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 16:29:24,411 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-11-18 16:29:24,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:29:24,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:29:24,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:29:32,652 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:29:32,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:29:32 BoogieIcfgContainer [2018-11-18 16:29:32,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:29:32,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:29:32,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:29:32,656 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:29:32,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:29:24" (1/3) ... [2018-11-18 16:29:32,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6bace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:29:32, skipping insertion in model container [2018-11-18 16:29:32,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:29:24" (2/3) ... [2018-11-18 16:29:32,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6bace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:29:32, skipping insertion in model container [2018-11-18 16:29:32,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:29:32" (3/3) ... [2018-11-18 16:29:32,660 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval_true-unreach-call.c [2018-11-18 16:29:32,668 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:29:32,674 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:29:32,683 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:29:32,703 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:29:32,704 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:29:32,704 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:29:32,705 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:29:32,705 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:29:32,705 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:29:32,705 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:29:32,705 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:29:32,705 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:29:32,718 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-18 16:29:32,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 16:29:32,722 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:29:32,723 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:29:32,724 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:29:32,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:29:32,728 INFO L82 PathProgramCache]: Analyzing trace with hash 469878416, now seen corresponding path program 1 times [2018-11-18 16:29:32,731 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:29:32,731 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/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 16:29:32,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:29:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:29:33,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:29:33,991 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 16:29:33,991 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:29:34,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:29:34,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:29:34,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 16:29:34,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 16:29:34,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:29:34,028 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2018-11-18 16:29:34,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:29:34,041 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-11-18 16:29:34,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 16:29:34,042 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-11-18 16:29:34,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:29:34,047 INFO L225 Difference]: With dead ends: 44 [2018-11-18 16:29:34,047 INFO L226 Difference]: Without dead ends: 21 [2018-11-18 16:29:34,050 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:29:34,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-18 16:29:34,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-18 16:29:34,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 16:29:34,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-11-18 16:29:34,073 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2018-11-18 16:29:34,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:29:34,074 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-11-18 16:29:34,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 16:29:34,074 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-11-18 16:29:34,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 16:29:34,075 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:29:34,075 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:29:34,075 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:29:34,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:29:34,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1576115003, now seen corresponding path program 1 times [2018-11-18 16:29:34,076 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:29:34,076 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/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 16:29:34,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:29:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:29:35,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:29:40,079 WARN L180 SmtUtils]: Spent 3.61 s on a formula simplification. DAG size of input: 31 DAG size of output: 9 [2018-11-18 16:29:40,084 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 16:29:40,084 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:29:40,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:29:40,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:29:40,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:29:40,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:29:40,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:29:40,117 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2018-11-18 16:29:46,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:29:46,125 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-11-18 16:29:46,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 16:29:46,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-11-18 16:29:46,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:29:46,126 INFO L225 Difference]: With dead ends: 33 [2018-11-18 16:29:46,126 INFO L226 Difference]: Without dead ends: 24 [2018-11-18 16:29:46,127 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:29:46,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-18 16:29:46,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-18 16:29:46,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 16:29:46,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-11-18 16:29:46,132 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2018-11-18 16:29:46,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:29:46,132 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-11-18 16:29:46,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:29:46,132 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-11-18 16:29:46,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 16:29:46,133 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:29:46,133 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:29:46,133 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:29:46,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:29:46,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1317949565, now seen corresponding path program 1 times [2018-11-18 16:29:46,134 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:29:46,134 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe210008-f398-416f-a5cf-44322beabfca/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 16:29:46,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:29:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:29:50,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:29:52,627 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 [2018-11-18 16:29:56,765 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 16:29:59,139 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 16:30:01,513 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 16:30:03,589 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 16:30:06,218 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 16:30:08,618 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 16:30:11,252 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven .cse2 main_~d~0))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse5 (fp.add roundNearestTiesToEven .cse3 .cse3))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse4) .cse5)) (.cse1 (fp.mul roundNearestTiesToEven .cse4 .cse5))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (fp.geq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (= |c_main_#t~ret2| (fp.div roundNearestTiesToEven .cse2 .cse3)) (not (fp.leq main_~d~0 .cse2)) (not (fp.gt .cse0 .cse1)) (fp.leq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven 20.0)))))))) is different from false [2018-11-18 16:30:13,778 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven .cse2 main_~d~0))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse5 (fp.add roundNearestTiesToEven .cse3 .cse3))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse4) .cse5)) (.cse1 (fp.mul roundNearestTiesToEven .cse4 .cse5))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (fp.geq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (= |c_main_#t~ret2| (fp.div roundNearestTiesToEven .cse2 .cse3)) (not (fp.leq main_~d~0 .cse2)) (not (fp.gt .cse0 .cse1)) (fp.leq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven 20.0)))))))) is different from true [2018-11-18 16:30:16,420 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven .cse2 main_~d~0))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse5 (fp.add roundNearestTiesToEven .cse3 .cse3))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse4) .cse5)) (.cse1 (fp.mul roundNearestTiesToEven .cse4 .cse5))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (fp.geq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (= (fp.div roundNearestTiesToEven .cse2 .cse3) c_main_~r~0) (not (fp.leq main_~d~0 .cse2)) (not (fp.gt .cse0 .cse1)) (fp.leq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven 20.0)))))))) is different from false [2018-11-18 16:30:18,949 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven .cse2 main_~d~0))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse5 (fp.add roundNearestTiesToEven .cse3 .cse3))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse4) .cse5)) (.cse1 (fp.mul roundNearestTiesToEven .cse4 .cse5))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (fp.geq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (= (fp.div roundNearestTiesToEven .cse2 .cse3) c_main_~r~0) (not (fp.leq main_~d~0 .cse2)) (not (fp.gt .cse0 .cse1)) (fp.leq main_~d~0 ((_ to_fp 11 53) roundNearestTiesToEven 20.0)))))))) is different from true [2018-11-18 16:30:39,518 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-11-18 16:30:39,719 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2018-11-18 16:30:39,720 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 16:30:39,723 INFO L168 Benchmark]: Toolchain (without parser) took 75687.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 949.2 MB in the beginning and 1.0 GB in the end (delta: -55.7 MB). Peak memory consumption was 41.3 MB. Max. memory is 11.5 GB. [2018-11-18 16:30:39,723 INFO L168 Benchmark]: CDTParser took 0.16 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 16:30:39,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.02 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 933.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 16:30:39,724 INFO L168 Benchmark]: Boogie Preprocessor took 36.40 ms. Allocated memory is still 1.0 GB. Free memory is still 933.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:30:39,725 INFO L168 Benchmark]: RCFGBuilder took 8342.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 933.1 MB in the beginning and 1.1 GB in the end (delta: -137.3 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:30:39,725 INFO L168 Benchmark]: TraceAbstraction took 67068.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 65.5 MB). Peak memory consumption was 65.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:30:39,728 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 237.02 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 933.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.40 ms. Allocated memory is still 1.0 GB. Free memory is still 933.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 8342.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 933.1 MB in the beginning and 1.1 GB in the end (delta: -137.3 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 67068.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 65.5 MB). Peak memory consumption was 65.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...